List of State Abbreviations
As early as October 1874, the United States Post Office recognized common abbreviations for states and territories.
Modern two-letter abbreviated codes for the states and territories originated when the Post Office introduced ZIP codes in 1963. The purpose was to make room for ZIP codes in the address, rather than to standardize state abbreviations per se.
The two-letter postal abbreviation system is complicated by the fact that eight state names begin with M and to avoid duplication, some abbreviations are not intuitive.
State Abbreviations
| Alabama: AL | Montana: MT |
| Alaska: AK | Nebraska: NE |
| Arizona: AZ | Nevada: NV |
| Arkansas: AR | New Hampshire: NH |
| California: CA | New Jersey: NJ |
| Colorado: CO | New Mexico: NM |
| Connecticut: CT | New York: NY |
| Delaware: DE | North Carolina: NC |
| Florida: FL | North Dakota: ND |
| Georgia: GA | Ohio: OH |
| Hawaii: HI | Oklahoma: OK |
| Idaho: ID | Oregon: OR |
| Illinois: IL | Pennsylvania: PA |
| Indiana: IN | Rhode Island: RI |
| Iowa: IA | South Carolina: SC |
| Kansas: KS | South Dakota: SD |
| Kentucky: KY | Tennessee: TN |
| Louisiana: LA | Texas: TX |
| Maine: ME | Utah: UT |
| Maryland: MD | Vermont: VT |
| Massachusetts: MA | Virginia: VA |
| Michigan: MI | Washington: WA |
| Minnesota: MN | West Virginia: WV |
| Mississippi: MS | Wisconsin: WI |
| Missouri: MO | Wyoming: WY |
List by Abbreviations
| AK: Alaska | MT: Montana |
| AL: Alabama | NC: North Carolina |
| AR: Arkansas | ND: North Dakota |
| AZ: Arizona | NE: Nebraska |
| CA: California | NH: New Hampshire |
| CO: Colorado | NJ: New Jersey |
| CT: Connecticut | NM: New Mexico |
| DE: Delaware | NV: Nevada |
| FL: Florida | NY: New York |
| GA: Georgia | OH: Ohio |
| HI: Hawaii | OK: Oklahoma |
| IA: Iowa | OR: Oregon |
| ID: Idaho | PA: Pennsylvania |
| IL: Illinois | RI: Rhode Island |
| IN: Indiana | SC: South Carolina |
| KS: Kansas | SD: South Dakota |
| KY: Kentucky | TN: Tennessee |
| LA: Louisiana | TX: Texas |
| MA: Massachusetts | UT: Utah |
| MD: Maryland | VA: Virginia |
| ME: Maine | VT: Vermont |
| MI: Michigan | WA: Washington |
| MN: Minnesota | WI: Wisconsin |
| MO: Missouri | WV: West Virginia |
| MS: Mississippi | WY: Wyoming |