Hunt & Live

Mercer County, IL

15,504 residents · 561 sq mi · 27.6/sq mi · 100% rural

Climate
50.5°F
37.9" rain/yr
Water
humid
Aridity index 1.6
Hardiness
Zone 7a
Winter low ~4.5°F

About Mercer County

Mercer County is a county in Illinois. According to the 2020 census, it had a population of 15,699. Its county seat is Aledo. Mercer County is included in the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.

66
Prepper Suitability
worsebetter
National rank: #654 of 3,109
Locator map
Location within the continental US

Prepper Assessment

Living in this area offers a predominantly rural lifestyle, with a population density of 27.6 people per square mile. The climate features an annual mean temperature of 50.5°F, allowing for a growing season suitable for a variety of crops, particularly in USDA zone 7a. With 37.9 inches of rainfall each year, water availability is reasonable for self-sufficient living, although the humid conditions may require careful management to avoid issues like mold or pests.

While this county has a relatively low violence percentile of 31, the area does face several natural hazards according to FEMA data, including drought (72) and ice storms (66), which could impact agricultural endeavors. The cost of living is moderate, with a median home price of $131,000, making it accessible for many. However, the 1.97% effective property tax may be a consideration for long-term financial planning.

This county may be a good fit for individuals or families seeking a rural, self-sufficient lifestyle in a relatively safe environment. Those who thrive here are likely to appreciate the affordability and community feel. However, individuals unprepared for the challenges of natural hazards or those relying heavily on urban amenities may find it less suitable. The potential for drought and ice storms could be a dealbreaker for some homesteaders.

AI-generated analysis based on county data (climate, hazards, density, housing, economy). For general orientation only.

Key Facts

Top 9% nationally
National prepper rank: #276 of 3,109.
#15 of 102 in IL
Ranked #15 of 102 counties statewide for prepper suitability.
Dominant hazard: drought
FEMA ranks drought risk at 72/100 here — the leading natural threat.
Rural-suburban mix
27.6 people per square mile.
Climate profile
Classified as humid with a 50.5°F annual mean and 37.9" of annual precipitation. USDA hardiness zone 7a.
Housing & taxes
Median home value $131,000.

Score Breakdown

Violence
57
percentile (lower = safer)
Disasters
9
percentile (lower = safer)
Density
36
percentile (lower = emptier)
Overall FEMA Risk
8.8
NRI composite (0-100)

Natural Hazard Profile (FEMA NRI)

Cold Wave 33
Drought 72
Earthquake 25
Hail 30
Hurricane 11
Heat Wave 49
Riverine Flood 9
Ice Storm 66
Landslide 68
Lightning 58
Strong Wind 62
Tornado 23
Wildfire 1
Winter Weather 27

Monthly Climate (1991–2020 normals)

Average temperature
JFMAMJ JASOND
Monthly precipitation (inches)
JFMAMJ JASOND
Summer high
84.6°F
Winter low
14.5°F
Heating degree days
6,199
Cooling degree days
943

Housing & Economy

Median home value
$131,000
Median HH income
$67,028
Price to income
Property tax rate
1.97%
~$2,579/yr median

Community Profile

Median age
44.7
Homeownership
79.5%
Poverty rate
8%
Unemployment
3.3%

Connectivity

Broadband households
61%
No internet access
11.4%

Explore Mercer County Further

Similar Counties

Data sources. Prepper scores are national percentile ranks of firearm fatalities (County Health Rankings 2024 / CDC WONDER), FEMA National Risk Index 2023 composite disaster score, and population density (ACS 2022 + TIGER 2022 land area). Climate from NOAA nClimDiv 1991–2020 normals. Hardiness zone is estimated from climate data and may differ from the official USDA PHZM. Demographics and housing from Census ACS 5-year 2022. All scores are for comparison purposes only and do not constitute advice about where to live.