American National Standards Institute (ANSI) State Codes - Geography

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American National Standards Institute (ANSI) Codes for States, the District of Columbia, Puerto Rico, and the Insular Areas of the United States

American National Standards Institute (ANSI) codes are a standardized set of numeric or alphabetic codes issued by the American National Standards Institute (ANSI) to ensure uniform identification of geographic entities through all federal government agencies. Below you will find the ANSI codes for the Identification of the states, the District of Columbia, Puerto Rico, and the Insular Areas of the United States.

National ANSI File

A National ANSI File is available for download.

This file contains pipe delimited records for each state. The records are of the format:

ANSI State Code | Official United States Postal Service (USPS) Code | Name | Geographic Names Information System Identifier (GNISID)

For example:

23|ME|Maine|01779787

ANSI Codes for the States and the District of Columbia

Name	ANSI State Numeric Code	Official USPS Code
Alabama	01	AL
Alaska	02	AK
Arizona	04	AZ
Arkansas	05	AR
California	06	CA
Colorado	08	CO
Connecticut	09	CT
Delaware	10	DE
District of Columbia	11	DC
Florida	12	FL
Georgia	13	GA
Hawaii	15	HI
Idaho	16	ID
Illinois	17	IL
Indiana	18	IN
Iowa	19	IA
Kansas	20	KS
Kentucky	21	KY
Louisiana	22	LA
Maine	23	ME
Maryland	24	MD
Massachusetts	25	MA
Michigan	26	MI
Minnesota	27	MN
Mississippi	28	MS
Missouri	29	MO
Montana	30	MT
Nebraska	31	NE
Nevada	32	NV
New Hampshire	33	NH
New Jersey	34	NJ
New Mexico	35	NM
New York	36	NY
North Carolina	37	NC
North Dakota	38	ND
Ohio	39	OH
Oklahoma	40	OK
Oregon	41	OR
Pennsylvania	42	PA
Rhode Island	44	RI
South Carolina	45	SC
South Dakota	46	SD
Tennessee	47	TN
Texas	48	TX
Utah	49	UT
Vermont	50	VT
Virginia	51	VA
Washington	53	WA
West Virginia	54	WV
Wisconsin	55	WI
Wyoming	56	WY

ANSI State Codes for the Outlying Areas of the United States and the Freely Associated States

Area Name	ANSI State Numeric Code	Official USPS Code	Status
Status: Under U.S sovereignty An aggregation of nine U.S. territories: Baker Island, Howland Island, Jarvis Island, Johnston Atoll, Kingman Reef, Midway Islands, Navassa Island, Palmyra Atoll, and Wake Island. Each territory is assigned an ANSI County Code in INCITS 31:2009, and may be individually identified through a combination of the ANSI State Code (74 or UM) and the appropriate ANSI County Code. Independent nation that operates under a Compact of Free Association with the United States of America.
American Samoa	60	AS	1
Federated States of Micronesia	64	FM	3
Guam	66	GU	1
Marshall Islands	68	MH	3
Commonwealth of the Northern Mariana Islands	69	MP	1
Palau	70	PW	3
Puerto Rico	72	PR	1
U.S. Minor Outlying Islands	74	UM	2
U.S. Virgin Islands	78	VI	1

ANSI State Numeric Codes for the Individual Minor Outlying Island Territories

Area Name	ANSI State Numeric Code
Baker Island	81
Howland Island	84
Jarvis Island	86
Johnston Atoll	67
Kingman Reef	89
Midway Islands	71
Navassa Island	76
Palmyra Atoll	95
Wake Island	79

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