Pottawatomie County, KS ZIP codes
There are 10 ZIP codes in Pottawatomie County, KS, in 10 towns, from 66407 to 66549. The largest are 66547 (Wamego), 66536 (Saint Marys) and 66535 (Saint George). 1 more crosses into it from a neighbouring county: 66502.
The county seat is Westmoreland.
- ZIP codes
- 10
- Partly in it
- 1 more
- Towns
- 10
- County seat
- Westmoreland
- County FIPS
20149- State
- Kansas
- Population
- 26,204
- Median household income
- $92,325
- Land area
- 841 sq mi
- Area code
- 785
- Metro area
- Manhattan
Pottawatomie County ZIP codes by town
- Westmoreland (county seat)
- 66549
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
ZIP codes partly in Pottawatomie County
This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Pottawatomie County.
- 66502 Manhattan · mostly in Riley County
Map of Pottawatomie County ZIP codes
The ZIP codes of Pottawatomie County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Pottawatomie County in numbers
About 26,204 people live in Pottawatomie County, in 9,381 households, the 22nd most populous of Kansas's 105 counties. The median household income is $92,325 a year, 24% above the Kansas median of $74,275 (US: $80,734). The median owner-occupied home is valued at $245,900 (13% above the Kansas median), and median gross rent is $924 a month. The median age is 36.4; 38.2% of adults 25 and over hold a bachelor's degree or higher (35.6% across Kansas); the average commute takes 23 minutes.
| Population | 26,204 |
|---|---|
| Households | 9,381 |
| Median age | 36.4 |
| Median household income | $92,325 |
| Median home value | $245,900 |
| Median gross rent | $924 |
| Bachelor's degree or higher | 38.2% |
| Mean commute | 23.2 min |
| Population density | 31 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Pottawatomie County
| Town | ZIP codes | Population |
|---|---|---|
| Wamego | 1 | 4,386 |
| St. Marys | 1 | 2,788 |
| St. George | 1 | 1,039 |
| Onaga | 1 | 727 |
| Westmoreland | 1 | 703 |
| Olsburg | 1 | 269 |
| Emmett | 1 | 178 |
| Belvue | 1 | 175 |
| Havensville | 1 | 172 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Pottawatomie County.
- Shawnee County (38)
- Riley County (9)
- Geary County (2)
- Jackson County (9)
- Nemaha County (9)
- Marshall County (11)
- Wabaunsee County (7)
Not sure you are in Pottawatomie County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Pottawatomie County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
66407 | Belvue , KS | Standard | 298 | $67,750 | $226,600 |
66422 | Emmett , KS | Standard | 1,228 | $73,257 | — |
66426 | Fostoria , KS | No street area | — | — | — |
66432 | Havensville , KS | Standard | 540 | $108,818 | $263,200 |
66520 | Olsburg , KS | Standard | 635 | $94,911 | $241,700 |
66521 | Onaga , KS | Standard | 1,417 | $61,250 | $193,000 |
66535 | Saint George , KS | Standard | 3,556 | $78,642 | $237,100 |
66536 | Saint Marys , KS | Standard | 4,204 | $85,568 | $224,600 |
66547 | Wamego , KS | Standard | 8,579 | $103,454 | $219,200 |
66549 | Westmoreland , KS | Standard | 1,526 | $79,318 | $202,300 |
Cite this page
zipcodes.pro. “Pottawatomie County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ks/county/pottawatomie
Underlying data is public domain or openly licensed — sources, vintages and licences.