Kaskaskia is a village in Ste. Genevieve County, Illinois, home to about 38 people across 0.1 square miles. It has no ZIP code of its own: it’s part of 63673.
Homes sold for a median of $185 per square foot in the three months ending August 2026, a seller’s market.
Part is in Kaskaskia, part in St. Mary and Brewer
Each card is that ZIP code’s whole market, including any part outside Kaskaskia. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Kaskaskia’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | St. Louis Lambert International Airport (STL)67 miles away |
|---|---|
| Closer regional airport | Cape Girardeau Regional Airport (CGI)47 miles away |
| Nearest city of 250,000+ | St. Louis, MO57 miles away |
| Nearest city of 1 million+ | Chicago, IL302 miles away |
Straight-line distances from the center of Kaskaskia; 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.
Kaskaskia had 21 residents in the 2020 census, up 133% since 2000.
It’s the 1417th largest of 1,450 towns in Illinois by population.
Ste. Genevieve County grew from 10,359 residents in 1900 to 18,479 in 2020.
Ste. Genevieve County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 21°F. About 46.1 inches of rain and melted snow fall in a typical year, with about 5 inches of snow.
Source: NOAA 1991–2020 climate normals, Perryville Wtp, MO weather station (7 miles away).
5,331 jobs at 423 businesses in Ste. Genevieve County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Kaskaskia.
Nearest hospitals
Providers with an office here
| Mental health providers | 1 |
|---|
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.
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Shares ZIP codes with St. Mary, Brewer and Ozora.
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.