St. Marys is a city in Pottawatomie County, Kansas, home to about 2,788 people across 1.2 square miles. Its ZIP code is 66536.
Homes sold for a median of $151 per square foot in the three months ending August 2026, a balanced market.
Each card is that ZIP code’s whole market, including any part outside St. Marys. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up St. Marys’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows St. Marys well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Kansas City International Airport (MCI)73 miles away |
|---|---|
| Closer regional airport | Manhattan Regional Airport (MHK)32 miles away |
| Nearest city of 250,000+ | Kansas City, MO81 miles away |
| Nearest city of 1 million+ | Dallas, TX444 miles away |
Straight-line distances from the center of St. Marys; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
St. Marys had 2,759 residents in the 2020 census, up 26% since 2000.
It’s the 95th largest of 721 towns in Kansas by population.
Pottawatomie County grew from 18,470 residents in 1900 to 25,348 in 2020.
Pottawatomie County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 90°F in summer, and winter lows average 18°F. About 34.9 inches of rain and melted snow fall in a typical year, with about 17 inches of snow.
Source: NOAA 1991–2020 climate normals, Wamego 4 W, KS weather station (16 miles away).
10,572 jobs at 703 businesses in Pottawatomie County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
15 doctors and other health care providers list an office in St. Marys.
Nearest hospitals
Providers with an office here
| Primary care doctors | 6 |
|---|---|
| Dentists | 1 |
| Nurse practitioners and physician assistants | 1 |
| Physical and occupational therapists | 3 |
| Optometrists | 1 |
| Chiropractors | 3 |
| Pharmacies | 3 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (3 nearby)
Grocery stores (2 nearby)
Libraries (1 nearby)
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1869.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Kaw Valley. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| St Marys ElemSt Marys | Pre-K–6 | 280 | Public | 0.9 mi |
| St. Marys Junior Senior HighSt Marys | 7–12 | 246 | Public | 1.0 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
Buying or selling around St. Marys? Tell us what you need and when. No agents advertise here yet, so we’ll keep your request for up to 30 days and send it to local agents who join. No obligation, and you choose who to work with.
Loading map…
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.