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Ransom, IL

Full City Profile · Illinois · Grundy County County

3.0 /5.0
B Good
312 Population 312/sq mi density
$69,250 Median Income $35,376 per capita
$101,500 Home Value $201,159 Zillow
$700 Median Rent 16.9% income on rent
52°F Avg Temperature 275 sunny days/yr
239 Violent Crime/100K 2,075 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.9 / 5.0
$69,250 median income, 1.6% unemployment
A+
Affordability
5.0 / 5.0
$101,500 home value, $700/mo rent
F
Safety
1.0 / 5.0
239 violent crimes/100K
C
Education
2.2 / 5.0
14.7% bachelor's degree or higher
Ransom experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 24°F in January while summers reach 77°F in July. The area gets 275 sunny days per year. Annual precipitation totals 39.4 inches. The area receives 26.4 inches of snow annually. Air quality is rated Good with a median AQI of 43.

Temperature

24°F Jan (-5°C) 77°F Jul (25°C)
Annual Average51.7°F
4% below US avg
January Average24°F (-5°C)
July Average77°F (25°C)
Sunny Days275 days/yr

Geography

Elevation707 ft (215 m)
Area0.4 sq mi (1.0 km²)
Population Density312/sq mi
Coordinates41.1586°N, 88.6542°W
TimezoneAmerica/Chicago
CountyGrundy County County
Nearest AirportIllinois Valley Regional-Walter A Duncan Field (VYS)
29 miles away

Precipitation & Snow

Annual Rainfall 39.4"
4% above US avg
Snowfall 26.4"
Wettest Month (Jul) 3.98"
Driest Month (Feb) 1.42"

Air Quality

AQI Median43.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score66.5 / 100
Social Vulnerability10.6 / 100
Community Resilience99.5 / 100

Hazard Breakdown

Tornado Relatively Moderate
Hurricane Very Low
Earthquake Very Low
Wildfire Very Low
Flood Relatively Low
Hail Very Low
Strong Wind Relatively Moderate
Heat Wave Relatively Low
Winter Weather Relatively Low
Lightning Very Low
Ice Storm Very Low
Drought Relatively Low
Cold Wave Relatively High
Landslide Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

8 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.2. Most recent: M2.6 on Mar 15, 2025.

Jun 28, 2004 12 km NW of Dayton, Illinois M4.2 39 km
Feb 10, 2010 2 km NW of Lily Lake, Illinois M3.8 91 km
Sep 2, 1999 8 km W of Amboy, Illinois M3.5 90 km
Nov 4, 2013 1 km SSW of Lyons, Illinois M3.2 99 km
Jul 15, 2024 2 km WNW of Somonauk, Illinois M3.1 54 km
Mar 25, 2015 3 km WNW of Lake in the Hills, Illinois M2.9 117 km
Jun 10, 2013 4 km NNE of Virgil, Illinois M2.6 93 km
Mar 15, 2025 6 km W of Dwight, Illinois M2.6 15 km
Source: USGS (M2.5+, 1990–2025)

Tornado History

728 tornadoes (EF0+) within 100 km since 1950. Strongest: EF5. Total: 89 fatalities, 1,448 injuries.

Date Rating Distance Fatalities
Aug 28, 1990 EF5 63 km 29
Apr 9, 2015 EF4 94 km 2
Nov 17, 2013 EF4 97 km 3
Jul 13, 2004 EF4 69 km 0
Jun 29, 1979 EF4 54 km 0
Jun 13, 1976 EF4 79 km 2
Apr 21, 1967 EF4 89 km 33
Apr 17, 1963 EF4 46 km 1
Jun 20, 2021 EF3 76 km 0
Feb 28, 2017 EF3 31 km 2
Feb 28, 2017 EF3 65 km 0
Jun 22, 2015 EF3 28 km 0
Jun 5, 2010 EF3 9 km 0
Jun 5, 2010 EF3 76 km 0
Apr 20, 2004 EF3 53 km 8
May 9, 1995 EF3 97 km 0
Mar 27, 1991 EF3 66 km 0
Apr 27, 1984 EF3 51 km 1
Apr 2, 1982 EF3 58 km 0
Jun 30, 1977 EF3 55 km 0
Source: NOAA SPC (EF0+, 1950–2024)

Wildfire History

9 wildfires (100+ acres) within 100 km. Largest: UNNAMED (1,741 ac, 2019).

Year Name Acres Distance
2019 UNNAMED 1,741 47 km
2019 UNNAMED 1,664 51 km
2000 UNNAMED 1,602 93 km
2021 NORTHEAST PRAIRIE UNIT 3 978 57 km
2024 NORTHEAST PRAIRIE 3 RX 938 57 km
2021 UNNAMED 738 57 km
2021 MIDDLE GRANT CREEK 700 48 km
2019 UNNAMED 698 57 km
2017 UNNAMED 549 48 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 24°F (-5°C) 1.5 in Coldest
February 27°F (-3°C) 1.4 in Driest
March 38°F (3°C) 2.8 in
April 50°F (10°C) 3.7 in
May 61°F (16°C) 3.9 in
June 71°F (22°C) 3.9 in
July 77°F (25°C) 4.0 in Warmest, Wettest
August 72°F (22°C) 3.5 in
September 65°F (18°C) 3.5 in
October 53°F (12°C) 2.6 in
November 40°F (4°C) 3.0 in
December 28°F (-2°C) 2.4 in

Ransom has a seasonal temperature swing of 53°F / from 24°F in January to 77°F in July. Total annual precipitation is 36.3 inches, with July being the wettest month (4.0") and February the driest (1.4").

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