| 2021-01-01 | 010 | us | |
| 2021-01-01 | 020 | region | |
| 2021-01-01 | 030 | division | |
| 2021-01-01 | 040 | state | |
| 2021-01-01 | 050 | state› county | |
| 2021-01-01 | 060 | state› county› county subdivision | |
| 2021-01-01 | 067 | state› county› county subdivision› subminor civil division | |
| 2021-01-01 | 140 | state› county› tract | |
| 2021-01-01 | 155 | state› place› county (or part) | |
| 2021-01-01 | 160 | state› place | |
| 2021-01-01 | 170 | state› consolidated city | |
| 2021-01-01 | 172 | state› consolidated city› place (or part) | |
| 2021-01-01 | 230 | state› alaska native regional corporation | |
| 2021-01-01 | 250 | american indian area/alaska native area/hawaiian home land | |
| 2021-01-01 | 251 | american indian area/alaska native area/hawaiian home land› tribal subdivision/remainder | |
| 2021-01-01 | 252 | american indian area/alaska native area (reservation or statistical entity only) | |
| 2021-01-01 | 254 | american indian area (off-reservation trust land only)/hawaiian home land | |
| 2021-01-01 | 256 | american indian area/alaska native area/hawaiian home land› tribal census tract | |
| 2021-01-01 | 260 | american indian area/alaska native area/hawaiian home land› state (or part) | |
| 2021-01-01 | 270 | american indian area/alaska native area/hawaiian home land› state (or part)› county (or part) | |
| 2021-01-01 | 280 | state› american indian area/alaska native area/hawaiian home land (or part) | |
| 2021-01-01 | 283 | state› american indian area/alaska native area (reservation or statistical entity only) (or part) | |
| 2021-01-01 | 286 | state› american indian area (off-reservation trust land only)/hawaiian home land (or part) | |
| 2021-01-01 | 290 | american indian area/alaska native area/hawaiian home land› tribal subdivision/remainder› state (or part) | |
| 2021-01-01 | 291 | american indian area/alaska native area (reservation or statistical entity only)› tribal census tract (or part) | |
| 2021-01-01 | 292 | american indian area (off-reservation trust land only)/hawaiian home land› tribal census tract (or part) | |
| 2021-01-01 | 310 | metropolitan statistical area/micropolitan statistical area | |
| 2021-01-01 | 311 | metropolitan statistical area/micropolitan statistical area› state (or part) | |
| 2021-01-01 | 312 | metropolitan statistical area/micropolitan statistical area› state (or part)› principal city (or part) | |
| 2021-01-01 | 313 | metropolitan statistical area/micropolitan statistical area› state (or part)› county | |
| 2021-01-01 | 314 | metropolitan statistical area/micropolitan statistical area› metropolitan division | |
| 2021-01-01 | 315 | metropolitan statistical area/micropolitan statistical area› metropolitan division› state (or part) | |
| 2021-01-01 | 316 | metropolitan statistical area/micropolitan statistical area› metropolitan division› state (or part)› county | |
| 2021-01-01 | 320 | state› metropolitan statistical area/micropolitan statistical area (or part) | |
| 2021-01-01 | 321 | state› metropolitan statistical area/micropolitan statistical area (or part)› principal city (or part) | |
| 2021-01-01 | 322 | state› metropolitan statistical area/micropolitan statistical area (or part)› county | |
| 2021-01-01 | 323 | state› metropolitan statistical area/micropolitan statistical area (or part)› metropolitan division (or part) | |
| 2021-01-01 | 324 | state› metropolitan statistical area/micropolitan statistical area (or part)› metropolitan division (or part)› county | |
| 2021-01-01 | 330 | combined statistical area | |
| 2021-01-01 | 331 | combined statistical area› state (or part) | |
| 2021-01-01 | 332 | combined statistical area› metropolitan statistical area/micropolitan statistical area | |
| 2021-01-01 | 333 | combined statistical area› metropolitan statistical area/micropolitan statistical area› state (or part) | |
| 2021-01-01 | 335 | combined new england city and town area | |
| 2021-01-01 | 336 | combined new england city and town area› state (or part) | |
| 2021-01-01 | 337 | combined new england city and town area› new england city and town area | |
| 2021-01-01 | 338 | combined new england city and town area› new england city and town area› state (or part) | |
| 2021-01-01 | 340 | state› combined statistical area (or part) | |
| 2021-01-01 | 341 | state› combined statistical area (or part)› metropolitan statistical area/micropolitan statistical area (or part) | |
| 2021-01-01 | 345 | state› combined new england city and town area (or part) | |
| 2021-01-01 | 346 | state› combined new england city and town area (or part)› new england city and town area (or part) | |
| 2021-01-01 | 350 | new england city and town area | |
| 2021-01-01 | 351 | new england city and town area› state (or part) | |
| 2021-01-01 | 352 | new england city and town area› state (or part)› principal city | |
| 2021-01-01 | 353 | new england city and town area› state (or part)› county (or part) | |
| 2021-01-01 | 354 | new england city and town area› state (or part)› county (or part)› county subdivision | |
| 2021-01-01 | 355 | new england city and town area› necta division | |
| 2021-01-01 | 356 | new england city and town area› necta division› state (or part) | |
| 2021-01-01 | 357 | new england city and town area› necta division› state (or part)› county (or part) | |
| 2021-01-01 | 358 | new england city and town area› necta division› state (or part)› county (or part)› county subdivision | |
| 2021-01-01 | 360 | state› new england city and town area (or part) | |
| 2021-01-01 | 361 | state› new england city and town area (or part)› principal city | |
| 2021-01-01 | 362 | state› new england city and town area (or part)› county (or part) | |
| 2021-01-01 | 363 | state› new england city and town area (or part)› county (or part)› county subdivision | |
| 2021-01-01 | 364 | state› new england city and town area (or part)› necta division (or part) | |
| 2021-01-01 | 365 | state› new england city and town area (or part)› necta division (or part)› county (or part) | |
| 2021-01-01 | 366 | state› new england city and town area (or part)› necta division (or part)› county (or part)› county subdivision | |
| 2021-01-01 | 400 | urban area | |
| 2021-01-01 | 410 | urban area› state (or part) | |
| 2021-01-01 | 430 | urban area› state (or part)› county (or part) | |