Hunt & Live

New Castle County, DE

575,494 residents · 426 sq mi · 1,349.9/sq mi · 6% rural

Climate
55.2°F
46.2" rain/yr
Water
humid
Aridity index 1.77
Hardiness
Zone 8b
Winter low ~15.1°F

About New Castle County

New Castle County is the northernmost of the three counties of the U.S. state of Delaware. As of the 2020 census, the population was 570,719, making it the most populous county in Delaware, with nearly 60% of the state's population of 989,948. The county seat is Wilmington, which is also the state's most populous city. New Castle County is included in the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area. The county is named after William Cavendish, 1st Duke of Newcastle. New Castle County has the highest population and population density of any Delaware county, and it is the smallest county in the state by area. It has more people than the other two counties, Kent and Sussex, combined. It is also the most economically developed of the three.

8
Prepper Suitability
worsebetter
National rank: #3052 of 3,109
Locator map
Location within the continental US

Prepper Assessment

This area features a humid climate with an annual mean temperature of 55.2°F and about 46.2 inches of rainfall per year, which supports a growing season typical for USDA zone 8b. The terrain is relatively flat, and the county's 575,494 residents create a high population density of 1,349.9 people per square mile, limiting the potential for large-scale self-sufficient living. However, the proximity to urban amenities in Wilmington can provide resources and markets for homesteaders.

The county faces significant natural hazards, with FEMA rankings indicating a high risk for winter weather (100), riverine flooding (98), and heat waves (95). Additionally, the area's high population density may contribute to social tensions or crime, given its violence percentile of 33/100. The cost of living is relatively high, with a median home price of $312,000, which may be a barrier for those seeking affordable land for homesteading.

This location may suit individuals who prioritize access to urban resources but are prepared to face the challenges of high density and significant natural hazards. Those with a strong preference for remote living or lower-density environments may find this area unsuitable. The hidden gem here is the connectivity to urban centers, which can be advantageous for sourcing supplies, but the dealbreaker could be the high risk of winter weather and flooding.

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

Key Facts

Ranked #2,878 nationally
Out of 3,109 CONUS counties for composite prepper suitability.
#3 in DE
Top 5 counties in Delaware out of 3.
Dominant hazard: winter weather
FEMA ranks winter weather risk at 100/100 here — the leading natural threat.
Urban: 1,350/sqmi
Densely populated at 1,350 people per square mile.
Climate profile
Classified as humid with a 55.2°F annual mean and 46.2" of annual precipitation. USDA hardiness zone 8b.
Housing & taxes
Median home value $312,000.

Score Breakdown

Violence
84
percentile (lower = safer)
Disasters
95
percentile (lower = safer)
Density
96
percentile (lower = emptier)
Overall FEMA Risk
95.3
NRI composite (0-100)

Natural Hazard Profile (FEMA NRI)

Coastal Flood 84
Cold Wave 93
Drought 84
Earthquake 93
Hail 24
Hurricane 88
Heat Wave 95
Riverine Flood 98
Ice Storm 89
Landslide 77
Lightning 81
Strong Wind 88
Tornado 88
Wildfire 61
Winter Weather 100

Monthly Climate (1991–2020 normals)

Average temperature
JFMAMJ JASOND
Monthly precipitation (inches)
JFMAMJ JASOND
Summer high
86.9°F
Winter low
25.1°F
Heating degree days
4,654
Cooling degree days
1,106

Housing & Economy

Median home value
$312,000
Median HH income
$85,309
Price to income
3.7×
Property tax rate
0.76%
~$2,369/yr median

Community Profile

Median age
39
Homeownership
68.2%
Poverty rate
10.5%
Unemployment
5.4%

Connectivity

Broadband households
82.7%
No internet access
5.9%

Explore New Castle 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.