Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
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Every ZIP code in America

Maps, live weather, radar, earthquakes and the strangest facts about all five digits.
ZIP codes on file: 041711

Try 95014, Cupertino, CA, or paste a street address.

◉ What ZIP code am I in? 🎲 Feeling lucky? Random ZIP code 🎯 Play today’s ZIP Hunt

⭐ ZIP Code of the Day — October 20, 2026
84606
  • 🔢Upside down on a calculator: gOghB
  • ➕84,606 = 2 × 3 × 59 × 239
  • 🎯690 miles west of the middle of the Lower 48
  • 👥29 other ZIP codes use exactly the same digits
🎯 ZIP Hunt — the daily game

Can you find today’s secret ZIP code in six guesses?

Type any ZIP code. We tell you how many miles you are from the secret one, which way to head, and which digits are right. Everyone gets the same puzzle, and a new one arrives at midnight UTC.

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The ZIP Code Hall of Fame

Lowest

00501

Holtsville, NY. The IRS gets the very first ZIP code.

Highest

99950

Ketchikan, AK. The end of the line.

Northernmost

99723

Barrow, AK, at 71.26°N.

Coldest mail

96598

A military mail code located at 90.00°S — the South Pole.

Biggest

99557

Aniak, AK: 13,680 square miles of land.

Says hello

07734

Turn a calculator upside down: hELLO. Keansburg, NJ.

All 412 palindromes, the five-of-a-kinds, the calculator words and more »

Tools an answer box cannot give you

All tools »

What is my ZIP code?

The ZIP code you are standing in, from your phone's or computer's location, drawn on its boundary map. Nothing is stored.

Where am I, besides the ZIP code?

The same lookup answers what county am I in, what area code am I in and what time zone am I in, with a ZIP code, town or address when you would rather not share your location.

ZIP codes within a radius

Every ZIP within N miles of a ZIP or address, sorted by real distance, with a CSV export.

Bulk lookup

Paste a column of ZIP codes, get city, county, FIPS, time zone and coordinates back. Runs in your browser — your list is never uploaded.

Distance between two ZIPs

Straight-line miles and kilometres, with both answer cards side by side.

ZIP codes in a county, city or metro

Pick an area, copy the list or download it.

Most searched towns

The towns whose ZIP codes people look up most, with each town's ZIP code or how many it has.

Most searched counties

Browse by state

Browse by ZIP prefix

The first digit of a ZIP code is a region and the first three are a sorting facility. This is how the mail is actually organised.

RegionStatesPrefixesZIP codes
0xxxx Northeast — CT, MA, ME, NH, NJ, NY, PR, RI, VT, VI 94 3,543
1xxxx DE, NY, PA 100 4,423
2xxxx DC, MD, NC, SC, VA, WV 98 4,556
3xxxx AL, FL, GA, MS, TN, military (AA) 96 4,590
4xxxx IN, KY, MI, OH 97 4,489
5xxxx IA, MN, MT, ND, SD, WI 89 4,145
6xxxx IL, KS, MO, NE 87 4,099
7xxxx AR, LA, OK, TX 94 4,715
8xxxx AZ, CO, ID, NM, NV, UT, WY 79 2,794
9xxxx AK, CA, HI, OR, WA, Pacific territories 96 4,357

For developers and businesses

Free ZIP code database

Every ZIP code with town, county, FIPS, coordinates, population and area codes. CSV, JSON or SQLite, free for commercial use under CC BY 4.0.

REST API

Lookup, radius, distance and bulk endpoints. Free tier for 3,000 requests a month, no credit card.

The complete dataset

Adds demographics, business counts, time zones, metro areas and boundaries, as CSV, Parquet and SQL, with twelve months of monthly updates.

Sources and coverage

Every source, its vintage and its licence.