First three digits · Missouri
ZIP Codes Starting with
70 ZIP codes start with 644, sorted at the Kansas City, MO (SCF 640) sectional center (USPS labeling list L005, effective October 1, 2026) in Missouri: 70 residential ZIP codes across 11 counties (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 644 mean?
The first digit, 6, is one of ten national areas (Illinois, Kansas, Missouri and Nebraska). The first three, 644, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 644 to the Kansas City, MO (SCF 640) facility. The last two digits pick the delivery area. By residents, the largest town names among the 644 ZIP codes are Maryville, Cameron, Savannah, Lathrop, Bethany and Plattsburg.
The same facility sorts 15 prefixes, 642 ZIP codes in all: 640, 641, 644, 645, 646, 647, 649, 660, 661, 662, 664, 665, 666, 667, 668.
Where are the 644 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 644
| County | ||||||
|---|---|---|---|---|---|---|
| 64401 | Agency | Buchanan County | 1,757 | 47 | $99k | $272k |
| 64402 | Albany | Gentry County | 2,379 | 20 | $54k | $112k |
| 64420 | Allendale | Worth County | 31 | 71 | $74k | $244k |
| 64421 | Amazonia | Andrew County | 817 | 33 | $53k | $90k |
| 64422 | Amity | DeKalb County | 350 | 8 | $69k | $182k |
| 64423 | Barnard | Nodaway County | 777 | 11 | $59k | $177k |
| 64424 | Bethany | Harrison County | 3,929 | 24 | $54k | $121k |
| 64426 | Blythedale | Harrison County | 530 | 10 | $88k | $28k |
| 64427 | Bolckow | Andrew County | 582 | 9 | $63k | $209k |
| 64428 | Burlington Junction | Nodaway County | 609 | 7 | $56k | $106k |
| 64429 | Cameron | DeKalb County | 11,449 | 76 | $69k | $207k |
| 64430 | Clarksdale | DeKalb County | 823 | 19 | $76k | $202k |
| 64431 | Clearmont | Nodaway County | 441 | 9 | $76k | $160k |
| 64432 | Clyde | Nodaway County | 119 | 110 | $76k | $108k |
| 64433 | Conception | Nodaway County | 202 | 269 | $50k | $114k |
| 64434 | Conception Junction | Nodaway County | 494 | 13 | $74k | $152k |
| 64436 | Cosby | Andrew County | 873 | 29 | $114k | $254k |
| 64437 | Craig | Holt County | 561 | 4 | $52k | $138k |
| 64438 | Darlington | Gentry County | 77 | 2 | – | – |
| 64439 | Dearborn | Platte County | 1,537 | 28 | $91k | $286k |
| 64440 | De Kalb | Buchanan County | 900 | 25 | $94k | $188k |
| 64441 | Denver | Worth County | 110 | 2 | $42k | $113k |
| 64442 | Eagleville | Harrison County | 951 | 12 | $62k | $115k |
| 64443 | Easton | Buchanan County | 1,249 | 26 | $86k | $300k |
| 64444 | Edgerton | Platte County | 1,043 | 30 | $69k | $234k |
| 64445 | Elmo | Nodaway County | 301 | 7 | $67k | $98k |
| 64446 | Fairfax | Atchison County | 1,066 | 8 | $57k | $102k |
| 64448 | Faucett | Buchanan County | 912 | 23 | $76k | $259k |
| 64449 | Fillmore | Andrew County | 491 | 13 | $72k | $89k |
| 64451 | Forest City | Holt County | 333 | 6 | $53k | $110k |
| 64453 | Gentry | Gentry County | 140 | 3 | $81k | – |
| 64454 | Gower | Clinton County | 2,941 | 41 | $87k | $261k |
| 64455 | Graham | Nodaway County | 292 | 5 | $54k | $102k |
| 64456 | Grant City | Worth County | 1,367 | 8 | $49k | $92k |
| 64457 | Guilford | Nodaway County | 308 | 8 | $62k | $106k |
| 64458 | Hatfield | Harrison County | 159 | 3 | – | $78k |
| 64459 | Helena | Andrew County | 507 | 21 | $79k | $171k |
| 64461 | Hopkins | Nodaway County | 768 | 10 | $64k | $103k |
| 64463 | King City | Gentry County | 1,349 | 10 | $59k | $161k |
| 64465 | Lathrop | Clinton County | 3,947 | 42 | $81k | $192k |
| 64466 | Maitland | Holt County | 565 | 10 | $54k | $113k |
| 64467 | Martinsville | Harrison County | 145 | 3 | – | $212k |
| 64468 | Maryville | Nodaway County | 14,280 | 99 | $57k | $211k |
| 64469 | Maysville | DeKalb County | 2,225 | 18 | $62k | $154k |
| 64470 | Mound City | Holt County | 1,483 | 20 | $71k | $166k |
| 64471 | New Hampton | Harrison County | 309 | 7 | $34k | $74k |
| 64473 | Oregon | Holt County | 1,285 | 11 | $63k | $136k |
| 64474 | Osborn | DeKalb County | 831 | 15 | $77k | $138k |
| 64475 | Parnell | Nodaway County | 403 | 6 | $61k | $121k |
| 64476 | Pickering | Nodaway County | 223 | 7 | $73k | $111k |
| 64477 | Plattsburg | Clinton County | 3,489 | 40 | $65k | $239k |
| 64479 | Ravenwood | Nodaway County | 1,091 | 17 | $61k | $151k |
| 64480 | Rea | Andrew County | 329 | 13 | $116k | $257k |
| 64481 | Ridgeway | Harrison County | 1,154 | 9 | $55k | $120k |
| 64482 | Rock Port | Atchison County | 1,980 | 15 | $67k | $120k |
| 64483 | Rosendale | Andrew County | 591 | 18 | $74k | $189k |
| 64484 | Rushville | Buchanan County | 940 | 13 | $78k | $163k |
| 64485 | Savannah | Andrew County | 7,998 | 74 | $68k | $200k |
| 64486 | Sheridan | Worth County | 270 | 5 | $26k | $55k |
| 64487 | Skidmore | Nodaway County | 572 | 4 | $66k | $96k |
| 64489 | Stanberry | Gentry County | 2,204 | 17 | $55k | $168k |
| 64490 | Stewartsville | Clinton County | 1,939 | 22 | $89k | $182k |
| 64491 | Tarkio | Atchison County | 1,638 | 14 | $58k | $91k |
| 64492 | Trimble | Clinton County | 1,713 | 48 | $66k | $226k |
| 64493 | Turney | Clinton County | 333 | 10 | $65k | $389k |
| 64494 | Union Star | Andrew County | 1,163 | 21 | $66k | $144k |
| 64496 | Watson | Atchison County | 224 | 6 | $53k | $207k |
| 64497 | Weatherby | DeKalb County | 488 | 12 | $69k | $196k |
| 64498 | Westboro | Atchison County | 221 | 3 | $49k | $46k |
| 64499 | Worth | Worth County | 137 | 5 | $94k | $94k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.