Zip code united states postal service: Look Up a ZIP Code™® — USPS Tracking®

What does my tracking number look like?


/ Sample Number

USPS Tracking®
9400 1000 0000 0000 0000 00

Priority Mail®
9205 5000 0000 0000 0000 00

Certified Mail®
9407 3000 0000 0000 0000 00

Collect On Delivery Hold For Pickup
9303 3000 0000 0000 0000 00

Global Express Guaranteed®
82 000 000 00


/ Sample Number

Priority Mail Express International®
EC 000 000 000 US

Priority Mail Express®
9270 1000 0000 0000 0000 00
EA 000 000 000 US

Priority Mail International®
CP 000 000 000 US

Registered Mail™
9208 8000 0000 0000 0000 00

Signature Confirmation™
9202 1000 0000 0000 0000 00

Where do I find my tracking number?

Your tracking number can be found in the following places:
  • Your Post Office™ shipping receipt
  • Your sales receipt if you bought insurance at the Post Office™
  • Your email confirmation if you shipped from USPS. com
  • The shipping confirmation email you received from an online retailer
  • The bottom peel-off portion of your USPS Tracking® label

How can I leave delivery instructions?

If a package qualifies for the USPS Delivery Instructions™ service, you can tell USPS where to leave a package at your address, send it to a different address, or send it to your Post Office.

Click Change Delivery Instructions on the tracking results page to leave your request. If you do not see the Change Delivery Instructions link, your package is not eligible for the Delivery Instructions service.

No “Delivery Instructions” Link

There are several reasons a package may not be eligible for Delivery Instructions.

Ineligible packages may have:

  • Already left the Post Office for delivery
  • A Hold Mail request
  • A Forward Mail request
  • A military (APO/FPO) or DPO address
  • An international sender
  • A Delivery Signature request
  • A Collect on Delivery (COD) request
  • An active USPS Package Intercept® order
  • Insurance for $500 or more
Delivery Instructions FAQs

Go to our FAQs section to find answers to your tracking questions.


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ZIP Code Database — Facts & Stats

The introduction of ZIP Codes marked the beginning of
the new age of the United States Post Office and the automation of mail
handling. Digital ZIP code maps and digital ZIP code databases have greatly
helped the online community by bringing this information to the masses.
Here’s a look at the history of the Post Office as it relates
to the ZIP Codes innovation.

Over 2000 Years Before Zip Codes:

500 BC: “Neither snow nor rain nor heat nor gloom of night stays
these couriers from the swift completion of their appointed rounds.” Greek
philosopher, Herodotus, pens this phrase that later is inscribed over the
main entrance of the New York City Post Office.

Over 300 Years Before Zip Codes:

1639: A tavern in Boston, owned by Richard Fairbanks, becomes the first
post office in the United States.

Over 200 Years Before Zip Codes:

1753: Philadelphia printer Benjamin Franklin is named joint postmaster
general. Franklin is later known as the “Father of the United States
Postal Service.”

Over 100 Years Before Zip Codes:

1774: The British Government fires Benjamin Franklin as joint postmaster
general due to his sympathies with colonists who wanted to break from England.

1775: The Continental Congress appoints Benjamin Franklin as postmaster

1785: The Post Office Department buys stagecoaches to carry the mail.

1789: Samuel Osgood is appointed as the first postmaster general under
the United States Constitution, by George Washington.

1813: Steamboats are employed to carry mail.

1829: The postmaster general becomes a member of the president’s
cabinet under Andrew Jackson.

1832: Trains carry the mail in Pennsylvania.

1838: Congress passes a law making all United States railroads post routes.

1847: The first American postage stamps go on sale: a five-cent stamp depicts
Benjamin Franklin, and a ten-cent stamp depicts George Washington. The
use of stamps is optional — recipients can be required to pay postage.

1855: The postal service makes the use of prepaid postage stamps mandatory
for mail delivery.

1855: Congress buys camels for the army to deliver mail over deserts in
the Southwest.

1858: Mail collection boxes are introduced on the streets of large cities.
Before this, people were required to go to the post office to send letters.

1860: The Pony Express begins on April 3rd.

1861: The Pony Express ends after about a year and a half of service when
workers finish laying telegraph lines across the United States. Telegraph
messages are faster and cheaper than Pony Express delivery.

Over 50 Years Before Zip Codes:

1863: The postal department begins delivering mail to individual homes
in large cities free of charge.

1864: The first United States Railroad Post Office is established on a
train. Mail is sorted while in transit by train on cars specially designed
as sorting centers.

1869: The Transcontinental railroad is completed, speeding mail delivery
between New York and California in a week or less.

1888: Owney, the mail dog, makes a mail delivery trip by wagon.
He later accompanies the mail on trains around the country and even on
ships to
other countries.

1893: Pneumatic tubes for mail delivery are introduced in Philadelphia.
Air pressure pushes the tubes from the main post office to smaller branches
in the city.

1896: Rural Free Delivery (RFD) is introduced in West Virginia.

1911: One of the first airmail flights in made. A sack of mail is flown
three miles and dropped from the plane to the waiting postmaster.

Over 25 Years Before Zip Codes:

1913: The United States Post Office Department begins Parcel Post, their
package delivery service, and establishes the COD (Collect on Delivery)

1918: The first permanent airmail routes are established.

1918: Stamp collector W.T. Robey buys a sheet of 100 defective airmail
stamps. The 24-cent stamps depicted an upside down airplane. These later
become some of the most valuable stamps in the world.

1921: The first airmail delivery employing nighttime flight is completed.
Mail is delivered from San Francisco to New York in under 34 hours.

Twenty Years Before ZIP Codes:

1943: The United States Post Office Department divides cities into zones.
This was a precursor to the Zoning Improvement Plan Codes, or ZIP Codes.

Zip Codes and the New United States Postal Service: 1963 — Today

1963: ZIP Codes are introduced. ZIP Codes are five-digit numbers that enable
mail to be sorted faster. Use of the code was not mandatory on any mail
at first.

1967: The Post Office requires second- and third-class bulk mail to be
pre sorted by ZIP Code.

1970: President Richard Nixon signs the Postal Reorganization Act.

1971: The new United States Postal Service is born as an independent agency,
no longer a part of the president’s cabinet.

1975: The practice of sending first-class mail traveling more than 200
miles by plane is established.

1977: Express Mail service begins.

1983: ZIP Codes are updated to ZIP + 4 Codes.

1992: Stamp machines automate the sale of stamps.

2000: The United States Postal Service opens the Postal Store on the Internet.

2003: allows Internet users to find Digital ZIP code maps & information

Post and courier services — it-abroad

The postal service is well developed in the USA. It is represented by the USPS (United States Post Service) and a number of private companies providing mail and cargo delivery services. Thanks to the well-established work of the mail, all types of businesses widely use its services, from online stores (purchases are delivered by the postal service, not the store’s own courier) to banks (you can cash a check by mailing it, credit cards and other banking products are delivered by mail ). nine0003

Federal Mail

Most mail and some shipments are delivered by the US Federal Postal Service (USPS). Every home has mailboxes where this service delivers mail. When you find accommodation, among other things, you will receive a key to your mailbox. It is in this box that your correspondence from all organizations will come: from DMV (your driver’s license) and banks (credit cards, checks) to providers and mobile operators (accounts and various promotional offers). nine0003

At first, you will often receive letters addressed to other people who lived at your address before you. The postal service recommends marking such letters with a cross next to the recipient’s address and leaving them in the box — supposedly they will be seized by the postman at the next mail delivery and thus the mail will know that the addressee has left. However, in practice this method does not always work…

Sending a letter

To send a letter (for example, to pay a bill by check), you will need: the letter itself, an envelope (envelope), a postage stamp (stamp). nine0003

The most common envelope size is designated «#10» and measures 9. 5 x 4.125 inches (241 x 105 mm). To fit a sheet of Letter-sized paper (8.5 x 11 inches or 216 x 274 mm), it needs to be folded into thirds, and Legal-sized paper (8.5 x 14 inches or 216 x 356 mm) should be folded into four times in length. Envelopes are deaf or with a window (one or two) of different shapes and locations. A windowed envelope is useful when sending a large number of letters (which are often billed) because the recipient’s address is printed on the letter itself in a certain place, eliminating the need to print anything on the envelope and eliminating the risk of mixing up envelopes for different recipients. In addition, envelopes come with a seal on the inside (a grid or a chaotic pattern that prevents the letter from being read through) and differ in the method of gluing (silicone or dry glue that requires wetting). nine0003

There are several types of rates for sending letters within the USA, the cheapest is First Class Mail — delivery within 3 days to most places in the country for letters and parcels weighing up to 13 ounces (368 grams).

For letters up to 1 ounce (28 grams, up to five sheets of Letter + Envelope), «Forever» type postage stamps are used. They cost exactly as much as it costs to send a letter of minimum weight (45 cents in 2011), but will be valid even after the increase in rates. The stamps are sold in blocks of 20, and thematic series with a different number of stamps are also issued. nine0003

The US address is written as follows:

Line 1: Recipient’s first and last name
Line 2: House number, street, apartment number (if any)
Line 3: City, State (2 letters), zip code

The recipient’s address is written in the lower right corner of the envelope, the sender’s address is in the upper left, put «FROM:» in front of your name.

Then put the letter in an envelope, seal it, put a stamp on it and drop the letter into one of the many mailboxes. They look something like this:

To drop a letter into it, pull the handle at the top of the box (under the canopy), opening the flap. Then put the letter on the flap and release the handle, the flap will close dropping the letter into the box.

Other services

Other services worth mentioning are the ability to track the delivery of a letter and receive a delivery confirmation.

The tracking service is called Certified Mail™ Service and costs $2.95 (not including the cost of the letter itself). To use this service you need to do the following:

  1. At the post office, take a special form (form 3800) and fill in the boxes at the bottom right. Specify the recipient and his address exactly as on the envelope
  2. Give the letter and completed form to the postal worker. He will stick a sticker from the form to the envelope, and on the form itself he will put a calendar stamp and an imprint with information about the time of sending, tariff, etc. using a printer.
  3. Pay for letter delivery and service. nine0054
  4. In the future, on the USPS website, you can track the delivery of the letter by entering the 20-digit number from the form. The form itself is a confirmation (receipt) of sending the letter.

The letter receipt confirmation service is called Return Receipt and requires the recipient to sign on a special card, which will then be sent to you and serve as documentary confirmation of the delivery of the letter to a specific person. The service costs $2.35, you need to do the following:

  1. First, follow step 1 from the description of the Certified Mail service (the Return Receipt service is used only with Certified Mail or other similar services)
  2. Then we take the form 3811 and fill it out: in paragraph 1 we indicate the recipient and his address exactly as on the envelope, in paragraph 3 we tick the box next to Certified Mail.
  3. Now turn over the form and indicate your name and address — where this form will be delivered after signing by the addressee at the time of delivery
  4. We give the letter and both forms to the postal worker. He sticks the leftmost part of the 3800 form (see, there is also a tracking number there) in box 2 of the 3811 form and stamps it. Form 3811 and the second sticker (with a barcode) of Form 3800 are then glued onto your letter.
  5. Pay for shipping and services (total $0.45+$2.95+$2.35=$5.75)
  6. You receive a receipt (form 3800) and track the delivery of your letter via the Internet. A few days after delivery, you receive a card (form 3811) with the signature of the recipient and the date of delivery. nine0054

Such services are most often needed when sending a tax return, to be sure that all papers have been delivered and to have documentary evidence of this. If you are a non-tax resident or if your family members need to obtain an ITIN, you will need to submit your tax return by paper mail or file it in person (see the «Taxes» section for details). You can send the following declarations through electronic services, it is easier and more convenient.

Change of address

If you are moving, the postal service allows you to «turn on» forwarding your mail to the new address. This is discussed in more detail in the section on moving to a new home.

Other mail services

There are other mail and parcel services in addition to US federal mail. You will meet them mainly as various online retailers use them to deliver bulky and/or high-value goods.

United Parcel Service of America (UPS)

FedEx — combines several different delivery services, both inexpensive and relatively slow (FedEx Ground), and delivering goods within one day (FedEx Express and others). Shipping is trackable on the combined service site.

DHL is a German service, so it is not widely used in the USA, but is often used if you need to send documents from America to Russia and other European countries.

All of the listed services work with trackable shipments (when you know the parcel ID), so you can find out the location and estimated time of delivery of your shipment on the corresponding website of the service. nine0003

To send a parcel using one of the listed services, you usually buy a paid label with a number and barcodes, which is pasted on the box, and then the parcel is given to one of the many drop-off locations of the corresponding service (drop-off location) or to a collection point and sending mail of several services (shipping & receiving, usually available in office centers and similar places). Often a paid label is provided by the store, for example, when returning a defective product. nine0003

Top 10 Most Expensive ZIP Codes in the US

A well-known term used by the US Postal Service is the zip code. It is used as a zip code (USPS). The main goal is to make it easier to deliver mail to people faster and faster. Postal codes consist of five digits that show where the sender or recipient of the postcard is located. With it, USPS can quickly find an important message and separate it from all other letters and packages. nine0003

Now it’s easy to search for postcodes and search for them by entering your city and the street where you live. With these services, you can find your zip code in just a few seconds. Not all people have a good memory, so many people forget postal codes. Thus, postcode lookup services can be helpful.

Let’s take a look at the most expensive zip codes in the US.

What are postcodes?

ZIP Code is a ZIP code used by the United States Postal Service to locate places in the country (USPS). Introduced at 1963, the basic format consisted of five digits. In 1983, the extended +4 postal code became available. It had five zip code digits followed by a hyphen and four more digits to help people find more specific places.

«ZIP» is an abbreviation for Zone Improvement Plan and was chosen to indicate that mail travels faster and more efficiently when mailers include a zip code in a mailing address. The United States Postal Service (USPS) originally registered the term «zip code» as a service mark; however, this registration was subsequently canceled on 1997 year.

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What are the types of zip codes?

There are four different types of postcodes:

  • Unique: assigned to a single address with a large number of people.
  • PO Box Only: Only used for PO boxes in a specific location, not for any other deliveries.
  • In the military, they use them to get mail for the US government. nine0054
  • There are many other postcodes that are standard.

1. Unique zip codes

Uniform zip codes (zip codes) are bulk mail recipients that receive mail in one location and subsequently distribute mail within an organization. Large corporations, government agencies, universities, and large medical institutions are among the types of organizations that use unique zip codes. nine0003

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corresponds to the postal code of the city of Military Gate, each APO and FPO is also organized by country or region — the first two digits indicate the routing center, the third digit indicates the country or region within «state», and the fourth digit indicates the routing center within «country». nine0003

3. P.O. Box

Postcodes are critical to your success if you want your mail to be processed efficiently without any delays or bottlenecks. Zip codes allow postal agencies such as the United States Postal Service (USPS) to quickly identify and sort mail sent to a specific destination. Postal mail may be delayed if postcodes are not included. Postal mail that does not include a zip code may need to be processed manually, resulting in unnecessary delays that could have been avoided if you had provided zip codes in advance. nine0003

4. Standard postcodes

Under certain extreme circumstances, a postcode of the theoretically standard type may be used in practice as one of the other three types. When it comes to Columbus, Ohio zip code 43210, it is classified as a standard type zip code. Since its geographic boundaries essentially coincide with those of the Ohio State University’s main campus, it is effectively unique to the university, even though it is not formally a «unique» zip code of the type used by other businesses and organizations. nine0003

The most expensive postcodes can be in any of these categories.

Why are postcodes used?

Here are some reasons why zip codes are used in the US.

1. Zip codes are a kind of postal code used in the United States.

Individuals mailing letters or parcels via the United States Postal Service (USPS) must include the code as part of the address in correspondence. This five-digit code is used to ensure that packages are delivered to the specified location as quickly as possible. Even the name zip, which means a plan for improving the zone, evokes a sense of urgency and speed. nine0003

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2. It makes sorting and shipping easier

A mail sorter can decide where a package should be delivered by looking at the numbers contained in these codes.

Zip codes are used to identify specific areas or regions in the United States, and each digit represents one of those areas or regions (USA). Some are used to represent broad geographic areas, such as the east or west coast, while others are used to represent specific states, cities, and towns. When you look at any of the codes, the first digit refers to a broad geographic region. nine0003

Typically, this refers to a group of states next to each other. For example, the states of New England, including Maine, Massachusetts, Vermont, and Connecticut, are represented by zero-based codes. They also represent US territories such as Puerto Rico and the US Virgin Islands internationally.

When it comes to zip codes, those that start with the number nine usually correspond to states on the west coast. For example, in the states of California, Oregon, and Washington, zip codes begin with the number nine. nine0003

Also, in Alaska and Hawaii, Zip Codes begin with the number nine. The next two digits designate a particular central structure, and so on. These offices of the US Postal Service are responsible for the further sorting of mail. They are often found in densely populated metropolitan areas.

3. The last two digits indicate the specific location.

The last two digits indicate an even more specific location, which is usually the post office. It is located within the geographical area indicated by the first digit of the code. It is also usually located in close proximity to the sectional centre. Some addresses that handle a significant amount of incoming mail may have their own postal numbers, called unique postcodes. nine0003

For example, the White House has the zip code 20006 on the door. In addition to the White House, other government buildings in the United States have been assigned codes beginning with the numbers 202 through 205, regardless of where they are located. University campuses and other such facilities may also have their own ZIP codes.

The 10 most expensive zip codes in the US

These are the 10 most expensive zip codes in the US.

1. Atherton, CA (94027)

Median house sale price in 2021: $7,475,000 2010 $94,027. In September 1, Forbes Magazine named Atherton ZIP Code XNUMX as the second most expensive ZIP code in the country in its annual list of the nation’s most expensive ZIP codes. But since this year, he has taken first place.

2. Boston, Massachusetts (02199)

Median house sale price in 2021: $5,500,000 02199. Compared to other zip codes in the United States, ZIP Code XNUMX is located in northern Massachusetts and covers a significantly smaller area than average. It is the second most expensive zip code in the US. nine0003

3. Sagaponack, NY (11962)

Average home sale price in 2021: $5,000,000 11962 According to Business Insider, in July 2019, the ZIP Code, which includes Sagaponak, was named one of the most expensive ZIP codes in the US.

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4$4957. ZIP Code XNUMX is located in western California and has a slightly smaller than average land area compared to other ZIP codes in the United States. It also has slightly less than average population density compared to other zip codes in the United States of America.

5. Miami Beach, FL (33109)

Average home sale price in 2021: $4,475,000 33109 33109. The majority of Zip Code 18’s population is white. There are a disproportionate number of older people and a disproportionate number of middle-aged people. In addition, the area has a limited number of single parents and a large number of families. Compared to other places in the country, there are very few children under the age of XNUMX in the zip code. nine0003

6. Beverly Hills, CA (


Average home sale price in 2021: $4,125,000

. Beverly Hills, California is the city’s official mailing address for

, according to the US Postal Service.

Parts of the 424 zip code include or border the city limits of Los Angeles, California, Beverly Hills, California, and West Hollywood, California, among other California cities. Zip code 310 is within area codes 818, 818, and 818. nine0003

7. Santa Barbara, CA (93108)

Average home sale price in 2021: $4,103,000. Not to mention, Santa Barbara is considered one of the most expensive cities in the entire central region of California. Even though the city is home to the rich and famous, XNUMX percent of its residents remain below the poverty line due to the high cost of living.

8. Santa Monica, CA (90402)

Average home sale price in 2021: $4,058,000 2018 $75,481. At $301,924, Santa Monica had a per capita income of $301,924, making it a wealthy city compared to the rest of California and the rest of the US. This equates to a family of four earning $XNUMX,XNUMX a year, which is a significant amount of money. Santa Monica, on the other hand, is home to both the very rich and the poor. Santa Monica is a city with a remarkably diverse ethnic population. nine0003

9. Los Altos, CA (94022)

Average home sale price in 2021: $4,052,000 94022 $4.9. The median price of a 120 zip-code home that covers parts of Los Altos Hills, California is $120 million, and a home is on the market for an average of 120 days, according to Zillow.

10 Medina, Washington (98039)

Average home sale price in 2021: $4,000,000 $3,000. Medina, Ohio has a population of just over 186,464 and is the tenth most expensive zip code in the United States, with a median home value of $186,464 and a median household income of $186,464, according to the most recent data available. nine0003


ZIP Code 94027 in Atherton, California, retained the title of the most expensive ZIP code in the United States for the fifth consecutive year. Bay Area suburbs are by far the most expensive place to live in the country in 2021, with an average sale price of $7.47 million, according to Property Shark.

F AQ at the most expensive zip codes in the US

The factors used to determine a life insurance policy do not include location. Your address and zip code are a factor when it comes to home insurance and auto insurance, but it doesn’t matter for life insurance. nine0003

Atherton 94027 in Silicon Valley, CA

Zip codes are an essential part of ensuring that mail is processed quickly and efficiently.

There’s a reason Atherton remains expensive, and that’s because it’s not a very good neighbor to the rest of California. The city has set legal boundaries to remain exclusive and is hindering efforts to build affordable housing during the state’s housing crisis, housing advocates say. nine0003


  • — These are the 10 most expensive zip codes in America.

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