Residential delivery area · Kansas
ZIP Code 66536: Saint Marys, KS
ZIP code 66536 uses the postal name Saint Marys, Kansas and lies mostly in Pottawatomie County (74% of its land), reaching into Shawnee County, Jackson County and Wabaunsee County (Census 2020 ZIP-county file). About 4,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $85,568 (Census Bureau, ACS 2020-2024). By Census place, 2% of its land lies in St. Marys; 98% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Saint Marys · its only residential ZIP
- County
- Pottawatomie County (74%); Shawnee County (11%); Jackson County (8%); Wabaunsee County (7%)
- Census places
- St. Marys
- Metro area
- Manhattan, KS
- House districts
- KS-1 (83%), KS-2 (17%) 119th Congress, by share of land
- State
- Kansas
- Time zone
- Central
- Land area
- 65.4 sq mi · 64 people per sq mi
Where is ZIP code 66536?
66536 centers on 39.215°, -96.070° and covers 65.4 square miles of land plus 1.8 of water. It borders 5 ZIP codes: 66407, 66533, 66422, 66418, 66507.
The map draws ZIP code areas only. For the streets inside 66536, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 66536 compare with the rest of Pottawatomie County?
| Measure | 66536 | In Pottawatomie County | In KS |
|---|---|---|---|
| People (ACS 2020-2024) | 4,204 | 3rd of 11 | 146th of 704 |
| Median household income | $86k | 2nd of 7 | 75th of 286 |
| Median home value | $225k | 2nd of 7 | 86th of 282 |
Its median household income is higher than in 69% of U.S. residential ZIP codes, and it is denser than 46% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 66536?
The 2020 Census counted 4,151 people in 66536; the ACS, which samples households over 2020-2024, estimates 4,204. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 4,204
- 2020 Census count
- 4,151
- Households
- 1,155
- Median age
- 24.9
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 66536?
Of the 4,204 people the ACS estimates in 66536, 28.9% are under 18 and 11.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (84.5%).
- Under 1828.9%
- 18 to 6459.7%
- 65 and older11.4%
- White, not Hispanic84.5%
- Hispanic or Latino7.2%
- Other or two or more6.1%
- Asian, not Hispanic1.6%
- Black, not Hispanic0.6%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 66536 earn?
Median household income is $85,568 (ACS 2020-2024), the 2nd highest of the 7 ranked ZIP codes in Pottawatomie County.
- Median household income
- $85,568±$11,221
- Income per person
- $27,956
- Below the poverty line
- 8.1%
- Unemployed (of the labor force)
- 4.8%
- Adults 25+ with a bachelor's degree
- 25.2%
- Adjusted gross income per tax return, 2022
- $74,4311,690 returns; wages 61% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 66536?
FHFA's house price index for 66536, built from repeat sales and appraisals of the same homes, rose 64% from 2015 to 2025 and rose 34% from 2020 to 2025, and moved −2.2% in 2025.
- Median home value (owners' estimate)
- $224,600
- Median gross rent
- $887
- Homes owned by their occupants
- 71.3%
- Housing units
- 1,215
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 66536?
109 business establishments had a location in this ZIP code in 2023, 18 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction25
- Retail trade21
- Other services (except public administration)11
- Health care and social assistance9
- Wholesale trade7
- Manufacturing6
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 66536?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 66407 | Belvue | 298 | $68k | 6.3 mi |
| 66533 | Rossville | 1,595 | $62k | 7.5 mi |
| 66422 | Emmett | 1,228 | $73k | 8.2 mi |
| 66418 | Delia | 556 | $78k | 8.5 mi |
| 66507 | Maple Hill | 1,438 | $97k | 11.5 mi |
| 66526 | Paxico | 693 | $79k | 11.6 mi (near) |
| 66547 | Wamego | 8,579 | $104k | 12.2 mi (near) |
| 66539 | Silver Lake | 3,092 | $88k | 13.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.