The following two-digit state designations are standard codes used by the U. S. Postal Service. They are used in The Texians Database, as well as in the Texas History Forum and Texas Genealogy Register sections of Lone Star Junction.
| Alabama | AL | Lousiana | LA | Ohio | OH |
| Alaska | AK | Maryland | MD | Oklahoma | OK |
| Arizona | AZ | Maine | ME | Oregon | OR |
| Arkansas | AR | Massachussets | MA | Pennsylvania | PA |
| California | CA | Michigan | MI | Rhode Island | RI |
| Colorado | CO | Minnesota | MN | South Carolina | SC |
| Connecticut | CT | Mississippi | MS | South Dakota | SD |
| Deleware | DE | Missouri | MO | Tennessee | TN |
| Florida | FL | Montana | MT | Texas | TX |
| Georgia | GA | Nebraska | NE | Utah | UT |
| Hawaii | HI | North Carolina | NC | Virginia | VA |
| Idaho | ID | North Dakota | ND | Vermont | VT |
| Illinois | IL | Nevada | NV | Washington | WA |
| Indiana | IN | New Hampshire | NH | Wash., D. C. | DC |
| Iowa | IA | New Jersey | NJ | West Virgina | WV |
| Kansas | KS | New Mexico | NM | Wisconsin | WI |
| Kentucky | KY | New York | NY | Wyoming | WY |
