First three digits · Kansas
ZIP Codes Starting with
44 ZIP codes start with 665, sorted at the Kansas City, MO (SCF 640) sectional center (USPS labeling list L005, effective October 1, 2026) in Kansas: 43 residential ZIP codes across 11 counties and 1 PO Box or single-organization code (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 665 mean?
The first digit, 6, is one of ten national areas (Illinois, Kansas, Missouri and Nebraska). The first three, 665, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 665 to the Kansas City, MO (SCF 640) facility. The last two digits pick the delivery area. By residents, the largest town names among the 665 ZIP codes are Manhattan, Wamego, Saint Marys, Marysville, Osage City and Meriden.
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 665 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 665
| County | ||||||
|---|---|---|---|---|---|---|
| 66501 | McFarland | Wabaunsee County | 363 | 1,043 | $60k | $94k |
| 66502 | Manhattan | Riley County | 43,693 | 197 | $55k | $223k |
| 66503 | Manhattan | Riley County | 17,273 | 208 | $98k | $339k |
| 66505 | Manhattan | Riley County | PO Box or unique | – | – | – |
| 66506 | Manhattan | Riley County | 3,155 | 4,456 | – | – |
| 66507 | Maple Hill | Wabaunsee County | 1,438 | 16 | $97k | $218k |
| 66508 | Marysville | Marshall County | 3,987 | 22 | $56k | $135k |
| 66509 | Mayetta | Jackson County | 1,974 | 16 | $66k | $189k |
| 66510 | Melvern | Osage County | 684 | 11 | $57k | $178k |
| 66512 | Meriden | Jefferson County | 3,678 | 55 | $79k | $214k |
| 66514 | Milford | Geary County | 1,350 | 80 | $94k | $227k |
| 66515 | Morrill | Brown County | 362 | 10 | $89k | $99k |
| 66516 | Netawaka | Jackson County | 408 | 8 | $81k | $174k |
| 66517 | Ogden | Riley County | 1,696 | 926 | $68k | $157k |
| 66518 | Oketo | Marshall County | 211 | 5 | – | $153k |
| 66520 | Olsburg | Pottawatomie County | 635 | 6 | $95k | $242k |
| 66521 | Onaga | Pottawatomie County | 1,417 | 8 | $61k | $193k |
| 66522 | Oneida | Nemaha County | 130 | 1,008 | $58k | $50k |
| 66523 | Osage City | Osage County | 3,941 | 26 | $75k | $167k |
| 66524 | Overbrook | Osage County | 2,473 | 19 | $84k | $173k |
| 66526 | Paxico | Wabaunsee County | 693 | 10 | $79k | $170k |
| 66527 | Powhattan | Brown County | 244 | 6 | $61k | $69k |
| 66528 | Quenemo | Osage County | 761 | 11 | $74k | – |
| 66531 | Riley | Riley County | 1,256 | 36 | $79k | $188k |
| 66532 | Robinson | Brown County | 527 | 6 | $77k | $119k |
| 66533 | Rossville | Shawnee County | 1,595 | 30 | $62k | $195k |
| 66534 | Sabetha | Nemaha County | 3,381 | 23 | $73k | $199k |
| 66535 | Saint George | Pottawatomie County | 3,556 | 85 | $79k | $237k |
| 66536 | Saint Marys | Pottawatomie County | 4,204 | 64 | $86k | $225k |
| 66537 | Scranton | Osage County | 1,475 | 28 | $70k | $100k |
| 66538 | Seneca | Nemaha County | 3,602 | 26 | $79k | $299k |
| 66539 | Silver Lake | Shawnee County | 3,092 | 75 | $88k | $231k |
| 66540 | Soldier | Jackson County | 582 | 7 | $52k | $179k |
| 66541 | Summerfield | Marshall County | 234 | 5 | $37k | $81k |
| 66542 | Tecumseh | Shawnee County | 3,019 | 93 | $108k | $235k |
| 66543 | Vassar | Osage County | 980 | 111 | $75k | $172k |
| 66544 | Vermillion | Marshall County | 287 | 3 | $97k | $76k |
| 66546 | Wakarusa | Shawnee County | 1,143 | 30 | $87k | $232k |
| 66547 | Wamego | Pottawatomie County | 8,579 | 64 | $104k | $219k |
| 66548 | Waterville | Marshall County | 975 | 12 | $71k | $90k |
| 66549 | Westmoreland | Pottawatomie County | 1,526 | 8 | $79k | $202k |
| 66550 | Wetmore | Nemaha County | 552 | 8 | $60k | $130k |
| 66552 | Whiting | Jackson County | 581 | 12 | $79k | $145k |
| 66554 | Randolph | Riley County | 770 | 8 | $97k | $194k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.