Coulterville, IL
Full City Profile · Illinois · Perry County County
3.2
/5.0
B
Good
770
Population
1,351/sq mi density
$57,813
Median Income
$25,066 per capita
$76,100
Home Value
$132,437 Zillow
$819
Median Rent
30.7% income on rent
55°F
Avg Temperature
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
C+
Economy
2.9 / 5.0
$57,813 median income, 21.5% unemployment
A+
Affordability
5.0 / 5.0
$76,100 home value, $819/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
C
Education
2.3 / 5.0
15.7% bachelor's degree or higher
Coulterville experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 31°F in January while summers reach 77°F in July. Annual precipitation totals 45.6 inches. The area receives 10.6 inches of snow annually.
Temperature
31°F Jan (-1°C)
77°F Jul (25°C)
| Annual Average | 55.1°F |
| 2% above US avg | |
| January Average | 31°F (-1°C) |
| July Average | 77°F (25°C) |
Geography
| Elevation | 551 ft (168 m) |
| Area | 0.2 sq mi (0.6 km²) |
| Population Density | 1,351/sq mi |
| Coordinates | 38.1851°N, 89.6043°W |
| Timezone | America/Chicago |
| County | Perry County County |
| Nearest Airport | Farmington Regional (FAM) 51 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 72.1 / 100 |
| Social Vulnerability | 64.1 / 100 |
| Community Resilience | 82.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 3.1 in | Coldest |
| February | 35°F (2°C) | 2.6 in | Driest |
| March | 44°F (7°C) | 4.0 in | |
| April | 55°F (13°C) | 5.2 in | |
| May | 65°F (18°C) | 5.2 in | Wettest |
| June | 73°F (23°C) | 4.3 in | |
| July | 77°F (25°C) | 4.7 in | Warmest |
| August | 75°F (24°C) | 3.5 in | |
| September | 68°F (20°C) | 3.0 in | |
| October | 57°F (14°C) | 3.3 in | |
| November | 45°F (7°C) | 4.1 in | |
| December | 35°F (2°C) | 2.7 in |
Coulterville has a seasonal temperature swing of 46°F / from 31°F in January to 77°F in July. Total annual precipitation is 45.6 inches, with May being the wettest month (5.2") and February the driest (2.6").