County ZIP codes · Kansas · FIPS 20149
Pottawatomie County, KS ZIP Codes
Pottawatomie County, Kansas has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 11 residential and 1 for PO boxes or a single organization. 9 of the residential ones lie mainly in Pottawatomie County and 2 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $54,833 in 66502 (Manhattan) to $103,454 in 66547 (Wamego) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Pottawatomie County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $73,257 and $79,481.
They carry 11 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 11 residential ZIP codes in Pottawatomie County
9 ZIP codes lie mainly in Pottawatomie County; 2 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 66547 | Wamego | 8,579 | 64 | $104k | $219k | 77% |
| 66536 | Saint Marys | 4,204 | 64 | $86k | $225k | 74% |
| 66535 | Saint George | 3,556 | 85 | $79k | $237k | 100% |
| 66549 | Westmoreland | 1,526 | 8 | $79k | $202k | 100% |
| 66521 | Onaga | 1,417 | 8 | $61k | $193k | 92% |
| 66422 | Emmett | 1,228 | 22 | $73k | – | 77% |
| 66520 | Olsburg | 635 | 6 | $95k | $242k | 100% |
| 66432 | Havensville | 540 | 8 | $109k | $263k | 77% |
| 66407 | Belvue | 298 | 5 | $68k | $227k | 59% |
Partly in Pottawatomie County
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
8 ZIP codes of Pottawatomie County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Pottawatomie | Elsewhere |
|---|---|---|
| 66502 | 21% | Riley County 60%; Geary County 16%; Wabaunsee County 4% |
| 66547 | 77% | Wabaunsee County 23% |
| 66536 | 74% | Shawnee County 11%; Jackson County 8%; Wabaunsee County 7% |
| 66521 | 92% | Nemaha County 8% |
| 66427 | 10% | Marshall County 90% |
| 66422 | 77% | Jackson County 23% |
| 66432 | 77% | Jackson County 12%; Nemaha County 11% |
| 66407 | 59% | Wabaunsee County 41% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 66426 | Fostoria |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Pottawatomie County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Pottawatomie County's ZIP codes use 2 prefixes: 664 and 665.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 664 | Kansas City, MO (SCF 640) | 5 | 37 |
| 665 | Kansas City, MO (SCF 640) | 7 | 44 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.