Prairie du Rocher is a village in Randolph County, Illinois, home to about 454 people across 0.6 square miles. Its ZIP code is 62277.
Homes sold for a median of $80 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 Prairie du Rocher. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Prairie du Rocher’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)48 miles away |
|---|---|
| Closer regional airport | Scott AFB/Midamerica Airport (BLV)35 miles away |
| Nearest city of 250,000+ | St. Louis, MO39 miles away |
| Nearest city of 1 million+ | Chicago, IL289 miles away |
Straight-line distances from the center of Prairie du Rocher; 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.
Prairie du Rocher had 502 residents in the 2020 census, down 18% since 2000.
It’s the 971st largest of 1,450 towns in Illinois by population.
Randolph County grew from 28,001 residents in 1900 to 30,163 in 2020.
Randolph County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 89°F in summer, and winter lows average 24°F. About 42.8 inches of rain and melted snow fall in a typical year, with about 4 inches of snow.
Source: NOAA 1991–2020 climate normals, Kaskaskia Rvr Navigation Lock, IL weather station (11 miles away).
10,736 jobs at 636 businesses in Randolph County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Public schools here are run by Prairie Du Rocher CCSD 134. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Prairie Du Rocher Elem SchoolPrairie Du Rocher | Pre-K–8 | 114 | Public | 0.2 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.
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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.