Washington, District of Columbia ZIP Codes
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What is the zip code for Washington, District of Columbia? The honest answer is that Washington does not have just one — it has 271 ZIP codes, from 20001 to 56972. This page gives you the complete list of Washington ZIP codes, plus free tools to find the exact code for any street address in the city.
Washington sits primarily in District of Columbia County, District of Columbia. Its ZIP codes are assigned by the U.S. Postal Service to delivery areas across the city — homes, businesses, government offices, and PO boxes. Scroll down for the full list, or jump straight to your address with the ZIP code by address lookup.
Complete List of Washington ZIP Codes
All 271 washington zip codes, sorted from lowest to highest (20001 to 56972):
About Washington ZIP Codes
ZIP codes in Washington, District of Columbia run from 20001 to 56972 — 271 codes in total. Each one maps to a USPS delivery area, which is why the correct code depends on the exact street address, not just the city name.
Washington sits mainly in District of Columbia County, District of Columbia. ZIP codes here serve downtown districts, residential neighborhoods, business centers, and surrounding communities that share a Washington mailing address.
Mailing to Washington? Using the correct ZIP code — and the ZIP+4 add-on where it matters — keeps letters and packages moving without delays or returns. Before you send, you can confirm any Washington address with our free Address Verification tool, and find the full 9-digit code with the ZIP+4 Lookup.
How to Find Your Washington ZIP Code
Enter a Washington street address to get its exact 5-digit ZIP code instantly.
Look up Washington, District of Columbia to see the full list of ZIP codes used across the city.
Explore ZIP codes for every covered city in District of Columbia on the state page.
Frequently Asked Questions
How many ZIP codes does Washington have?
Washington has 271 ZIP codes, ranging from 20001 to 56972. The complete list is on this page.
What is the ZIP code of Washington, District of Columbia?
There is no single ZIP code for Washington — the city uses 271 ZIP codes (20001 to 56972). Enter your street address in our ZIP Code by Address tool to find your exact one.
What county is Washington, District of Columbia in?
Washington is primarily in District of Columbia County, District of Columbia.
What is the ZIP code range for Washington?
ZIP codes in Washington start at 20001 and go up to 56972. Codes are assigned by delivery area, so the lowest codes generally sit closest to the city center and rise as you move outward.
Why does Washington have 271 different ZIP codes?
The Postal Service creates a new ZIP code whenever a delivery area grows too large for one code to handle efficiently. A city the size of Washington has many delivery routes — neighborhoods, business districts, and high-volume mailers each need their own code so mail can be sorted and delivered accurately.
How do I find my ZIP+4 code in Washington?
Use our free ZIP+4 Lookup tool — enter your Washington street address to get the full 9-digit code.
Related ZIP Code Tools
Find the ZIP code for any Washington street address.
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