State rank#1 of 3
Smallest county577,961 residentsNew Castle County
Published county profile · Official data · FIPS 10003
New Castle County, Delaware
County-level income, housing, jobs, education, health, and population with transparent statewide comparisons and source periods.
Population577,961
Household income$91,166
Unemployment3.6%
Life expectancy77.1 years
County overview
Living metrics at a glance
New Castle County has 577,961 residents and ranks #1 by population among Delaware county equivalents. Median household income is $91,166. The annual-average unemployment rate is 3.6%. Its clearest relative strength is median household income. Its county population is above the state county median. Every figure below stays at county scope.
Within Delaware
County population range
The marker places this county between the smallest and largest county populations in the state.
Relocation guide
Moving to New Castle County: what to check
Data narrows the search; municipality, neighborhood, commute, schools, and current listings complete the decision.
Before moving
Before moving, compare municipalities inside New Castle County, because county averages do not describe every neighborhood. Review current housing inventory, commute destinations, school districts, healthcare access, and job locations. Its clearest relative strength is median household income.
Cost and housing
Housing benchmarks are $352,200 median home value and $1,448/mo median gross rent. Set those costs against a median household income of $91,166, while remembering that household circumstances and municipalities vary.
Who it may suit
New Castle County may be worth a closer look for movers prioritizing median household income, unemployment rate, and bachelor’s degree or higher. College attainment is 39.7% and life expectancy is 77.1 years.
Potential advantages
- Median household income: $91,166, rank #1 of 3 available Delaware counties.
- Unemployment rate: 3.6%, rank #1 of 3 available Delaware counties.
- Bachelor’s degree or higher: 39.7%, rank #1 of 3 available Delaware counties.
Trade-offs to check
- Median gross rent: $1,448/mo, rank #3 of 3; investigate local variation before moving.
- Median home value: $352,200, rank #2 of 3; investigate local variation before moving.
- Life expectancy: 77.1 years, rank #2 of 3; investigate local variation before moving.
Income, housing, jobs, education & health
County metrics within Delaware
Rank and range use only counties in Delaware with that field available. A lower rank number is stronger when the metric has a clear direction.
Median household income
$91,166
$91,166; above the state county median of $81,497.
State rank #1 of 3 · U.S. Census Bureau — American Community Survey
Median home value
$352,200
$352,200; at the state county median of $352,200.
State rank #2 of 3 · U.S. Census Bureau — American Community Survey
Median gross rent
$1,448/mo
$1,448/mo; above the state county median of $1,354/mo.
State rank #3 of 3 · U.S. Census Bureau — American Community Survey
Unemployment rate
3.6%
3.6%; at the state county median of 3.6%.
State rank #1 of 3 · U.S. Bureau of Labor Statistics — Local Area Unemployment Statistics
Bachelor’s degree or higher
39.7%
39.7%; above the state county median of 33%.
State rank #1 of 3 · U.S. Census Bureau — American Community Survey
Life expectancy
77.1 years
77.1 years; at the state county median of 77.1 years.
State rank #2 of 3 · County Health Rankings & Roadmaps
Poor or fair health
16.1%
16.1%; at the state county median of 16.1%.
State rank #2 of 3 · County Health Rankings & Roadmaps
Uninsured
6.2%
6.2%; below the state county median of 7.5%.
State rank #1 of 3 · County Health Rankings & Roadmaps
Primary care access
1 per 1,155 residents
1 per 1,155 residents; below the state county median of 1 per 1,628 residents.
State rank #1 of 3 · County Health Rankings & Roadmaps
Mental health access
1 per 239 residents
1 per 239 residents; below the state county median of 1 per 414 residents.
State rank #1 of 3 · County Health Rankings & RoadmapsCommon questions
New Castle County FAQ
Is New Castle County a good place to live?
New Castle County may be worth a closer look for movers prioritizing median household income, unemployment rate, and bachelor’s degree or higher. College attainment is 39.7% and life expectancy is 77.1 years.
What should I know before moving to New Castle County?
Start with housing, employment, commute, schools, healthcare access, and the specific municipality. Housing benchmarks are $352,200 median home value and $1,448/mo median gross rent. Set those costs against a median household income of $91,166, while remembering that household circumstances and municipalities vary.
What is the population of New Castle County?
New Castle County has 577,961 residents in the 2020–2024 ACS 5-year dataset.
What is the FIPS code for New Castle County?
The five-digit county FIPS code is 10003; the parent state FIPS is 10.
What is the median household income in New Castle County?
The ACS median household income is $91,166.
How much does housing cost in New Castle County?
Housing benchmarks are $352,200 median home value and $1,448/mo median gross rent. Set those costs against a median household income of $91,166, while remembering that household circumstances and municipalities vary.
What is the unemployment rate in New Castle County?
The BLS LAUS annual-average unemployment rate is 3.6%.
Similar population
Nearby counties in the state ranking
Source and gate
Methodology and source periods
All records join by five-digit FIPS. Profiles publish when ACS county population is at least 100,000 or the county is the state’s largest. Missing source values remain unavailable and are excluded from ranks. Runtime data was generated 2026-07-26.
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