It seems the Census has two different two-digit codings for states. Both are numbers assigned based on the state's alphabetical ordering, but one seems to apply the numbers directly from 1-51 (50 states + DC), while the other skips some numbers
I was unable to find a CSV version of the un-skipped version, so that is included here.
| code | name | |
|---|---|---|
| 01 | Alabama | |
| 02 | Alaska | |
| 03 | Arizona | |
| 04 | Arkansas | |
| 05 | California | |
| 06 | Colorado | |
| 07 | Connecticut | |
| 08 | Delaware | |
| 09 | District of Columbia | |
| 10 | Florida | |
| 11 | Georgia | |
| 12 | Hawaii | |
| 13 | Idaho | |
| 14 | Illinois | |
| 15 | Indiana | |
| 16 | Iowa | |
| 17 | Kansas | |
| 18 | Kentucky | |
| 19 | Louisiana | |
| 20 | Maine | |
| 21 | Maryland | |
| 22 | Massachusetts | |
| 23 | Michigan | |
| 24 | Minnesota | |
| 25 | Mississippi | |
| 26 | Missouri | |
| 27 | Montana | |
| 28 | Nebraska | |
| 29 | Nevada | |
| 30 | New Hampshire | |
| 31 | New Jersey | |
| 32 | New Mexico | |
| 33 | New York | |
| 34 | North Carolina | |
| 35 | North Dakota | |
| 36 | Ohio | |
| 37 | Oklahoma | |
| 38 | Oregon | |
| 39 | Pennsylvania | |
| 40 | Rhode Island | |
| 41 | South Carolina | |
| 42 | South Dakota | |
| 43 | Tennessee | |
| 44 | Texas | |
| 45 | Utah | |
| 46 | Vermont | |
| 47 | Virginia | |
| 48 | Washington | |
| 49 | West Virginia | |
| 50 | Wisconsin | |
| 51 | Wyoming |