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IL area data

Flat Rock, IL

Flat Rock, IL.

Population: 1,730 (Census ACS)

Home values & appreciation

Median home value
$169,457
1-year appreciation
-5.0%
3-year appreciation
-4.2%
5-year appreciation
-2.4%
All-time peak (2024-04)
$184,764
House Price Index
325.3 (+6.1% YoY)

Affordability

Cost of living index (Average)
97.3 (100 = US avg)
Electricity rate (state-level)
17.7¢/kWh
Natural gas rate (state-level)
$11.30/MCF
30-year mortgage rate (national)
6.66%
15-year mortgage rate (national)
6.00%

Natural hazards & flood risk

Overall hazard risk
Very Low
Top hazards
drought

Climate (30-year normals)

Average annual temperature
56.0°F
Average high
66.0°F
Average low
45.0°F
Annual precipitation
49.8 in

Amenities

National parks within ~60 mi
1
Nearest national park
George Rogers Clark National Historical Park (17 mi)
Nearest airport
Robinson Municipal Airport (8 mi)
Hospitals nearby (~15 mi)
1,090
Avg hospital rating
3.1 / 5
Solar radiation rating
Fair (4.1 kWh/m²/day)

Migration

Net migration
-19 tax filers

Housing stock

Median year housing built
1,976
Median annual property tax
$1,605
Mean commute to work
33 min
Households with broadband internet
66.2%

Employment & development

Total county employment
5,580
Average weekly wage
$1,198
Top industries (by employment)
Accommodation & Food, Construction, Professional Services
Annual residential building permits (county)
8

Area data compiled from public government, academic, and industry research feeds. Data sources →

Data last updated

Most recent source refresh: Aug 2026. See all data sources →

Data compiled by REAIGENT7 — AI listing platform for real estate agents