Hunt & Live

Johnson County, IL

13,381 residents · 344 sq mi · 38.9/sq mi · 100% rural

Climate
56.9°F
49.7" rain/yr
Water
humid
Aridity index 1.8
Hardiness
Zone 8b
Winter low ~15.6°F

About Johnson County

Johnson County is a county in the U.S. state of Illinois. According to the 2020 census, it has a population of 13,308. Its county seat is Vienna. It is located in the southern portion of Illinois known locally as "Little Egypt".

49
Prepper Suitability
worsebetter
National rank: #1612 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 38.9 people per square mile, allowing for ample space and privacy. The climate is characterized by a humid subtropical environment, with an annual mean temperature of 56.9°F and 49.7 inches of rainfall, supporting a growing season suitable for various crops. However, the USDA zone 8b means that gardeners must be mindful of potential heat waves and other seasonal extremes that could impact yields.

Natural hazards present notable risks, particularly earthquakes, which rank high at FEMA level 91. Other concerns include heat waves and strong winds, both above the national average risk. The area has a lower violence percentile at 17/100, indicating a relatively safe environment, but the cost of living is moderate, with a median home price of $141,200. Additionally, only 30% of households have broadband access, which may be a drawback for those relying on internet connectivity.

This county may appeal to individuals seeking a quiet, rural lifestyle with opportunities for gardening and self-sufficient living. Those who thrive here are likely to be adaptable and prepared for occasional natural hazards. However, individuals who prioritize modern conveniences, such as reliable internet access and urban amenities, might find this location less suitable. The hidden gem here is the affordability of housing, while the dealbreaker could be the significant earthquake risk.

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

Key Facts

Ranked #804 nationally
Out of 3,109 CONUS counties for composite prepper suitability.
#44 of 102 in IL
Ranked #44 of 102 counties statewide for prepper suitability.
Dominant hazard: earthquake
FEMA ranks earthquake risk at 91/100 here — the leading natural threat.
Rural-suburban mix
38.9 people per square mile.
Climate profile
Classified as humid with a 56.9°F annual mean and 49.7" of annual precipitation. USDA hardiness zone 8b.
Housing & taxes
Median home value $141,200.

Score Breakdown

Violence
57
percentile (lower = safer)
Disasters
51
percentile (lower = safer)
Density
46
percentile (lower = emptier)
Overall FEMA Risk
51.1
NRI composite (0-100)

Natural Hazard Profile (FEMA NRI)

Cold Wave 64
Drought 53
Earthquake 91
Hail 67
Hurricane 38
Heat Wave 69
Riverine Flood 38
Ice Storm 68
Landslide 44
Lightning 34
Strong Wind 69
Tornado 56
Wildfire 11
Winter Weather 65

Monthly Climate (1991–2020 normals)

Average temperature
JFMAMJ JASOND
Monthly precipitation (inches)
JFMAMJ JASOND
Summer high
88.1°F
Winter low
25.6°F
Heating degree days
4,322
Cooling degree days
1,417

Housing & Economy

Median home value
$141,200
Median HH income
$63,295
Price to income
2.2×
Property tax rate
1.33%
~$1,871/yr median

Community Profile

Median age
42.3
Homeownership
85.3%
Poverty rate
16.5%
Unemployment
2.9%

Connectivity

Broadband households
29.8%
No internet access
20.7%

Explore Johnson County Further

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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.