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US State Abbreviations

Complete list of all 50 US state postal codes, abbreviations, and capitals.

# State Code Capital Address Tool
1 Alabama AL Montgomery Random Address
2 Alaska AK Juneau Random Address
3 Arizona AZ Phoenix Random Address
4 Arkansas AR Little Rock Random Address
5 California CA Sacramento Random Address
6 Colorado CO Denver Random Address
7 Connecticut CT Hartford Random Address
8 Delaware DE Dover Random Address
9 Florida FL Tallahassee Random Address
10 Georgia GA Atlanta Random Address
11 Hawaii HI Honolulu Random Address
12 Idaho ID Boise Random Address
13 Illinois IL Springfield Random Address
14 Indiana IN Indianapolis Random Address
15 Iowa IA Des Moines Random Address
16 Kansas KS Topeka Random Address
17 Kentucky KY Frankfort Random Address
18 Louisiana LA Baton Rouge Random Address
19 Maine ME Augusta Random Address
20 Maryland MD Annapolis Random Address
21 Massachusetts MA Boston Random Address
22 Michigan MI Lansing Random Address
23 Minnesota MN Saint Paul Random Address
24 Mississippi MS Jackson Random Address
25 Missouri MO Jefferson City Random Address
26 Montana MT Helena Random Address
27 Nebraska NE Lincoln Random Address
28 Nevada NV Carson City Random Address
29 New Hampshire NH Concord Random Address
30 New Jersey NJ Trenton Random Address
31 New Mexico NM Santa Fe Random Address
32 New York NY Albany Random Address
33 North Carolina NC Raleigh Random Address
34 North Dakota ND Bismarck Random Address
35 Ohio OH Columbus Random Address
36 Oklahoma OK Oklahoma City Random Address
37 Oregon OR Salem Random Address
38 Pennsylvania PA Harrisburg Random Address
39 Rhode Island RI Providence Random Address
40 South Carolina SC Columbia Random Address
41 South Dakota SD Pierre Random Address
42 Tennessee TN Nashville Random Address
43 Texas TX Austin Random Address
44 Utah UT Salt Lake City Random Address
45 Vermont VT Montpelier Random Address
46 Virginia VA Richmond Random Address
47 Washington WA Olympia Random Address
48 West Virginia WV Charleston Random Address
49 Wisconsin WI Madison Random Address
50 Wyoming WY Cheyenne Random Address

US Territories

Territory Code Capital
District of Columbia DC Washington
American Samoa AS Pago Pago
Guam GU Hagatna
Northern Mariana Islands MP Saipan
Puerto Rico PR San Juan
U.S. Virgin Islands VI Charlotte Amalie

About US State Abbreviations

The United States Postal Service (USPS) introduced the current two-letter state abbreviation system in 1963, coinciding with the launch of ZIP codes. Before this, states used a variety of longer abbreviations (e.g., "Calif." for California, "Mass." for Massachusetts).

These two-letter codes are universally used in mailing addresses, government forms, and data systems across the country. They are always written in uppercase with no periods.

Quick Rules

  • Always use two uppercase letters with no periods (e.g., CA, not Ca. or C.A.)
  • Place the state code after the city name, followed by the ZIP code: Los Angeles, CA 90001
  • The District of Columbia uses DC — it is not a state but has its own postal code
  • US territories (PR, GU, VI, AS, MP) also have two-letter codes following the same format

USPS Address Format

The standard USPS address format uses state abbreviations as follows:

JOHN DOE
123 MAIN STREET APT 4B
NEW YORK, NY 10001

Frequently Asked Questions

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