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COUNTY · 2000 CENSUS

New Castle County

Delaware · 500,265 residents · 426.337 sq mi
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The short version

New Castle County is wealthier than most US places, with a median household income of $52,419. Population has held roughly steady since 1990. Median home value is $132,900.

At a glance
Wealthier
above the US median
US median: $42,589
Mid-age
median age 35.0
US median: 35.2
More educated
29% hold a bachelor's degree
US average: 24%
More affordable
home values down 8%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
500,265
+13%since 1990
from 441,946 in 1990
1990 – 2025
Population density
1,173 / sq mi
+13%since 1990
from 1,037 / sq mi in 1990
US average: 242
Median age
35.0
+7%since 1990
from 32.6 in 1990
US average: 35.2
Population, 1990 – 2024
428K469K510K551K592K1990201020202024New Castle County
2024578K
1990201020202024
Section 02

Income & economy

Median household income
$52,419
+3%inflation adjusted, since 1990
from $38,617 in 1990
US average: $42,589
1990 – 2024
Per capita income
$25,413
+46%since 1990
from $17,442 in 1990
US average: $21,522
Poverty rate
8.4%
+0.9 ptssince 1990
from 7.5% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$132,900
−8%inflation adjusted, since 1990
from $110,100 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$670
−3%inflation adjusted, since 1990
from $524 in 1990
US average: $602
Owner-occupied
70.1%
+1.9 ptssince 1990
from 68.3% in 1990
29.9% rent
Afford Score
2.5
−11%since 1990
from 2.9 in 1990
1990 – 2024
RELATED:See current rent listings in New Castle County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic80.5%(355,748)
Black16.4%(72,531)
Hispanic / Latino2.5%(11,076)
Asian1.5%(6,803)
Diversity Score44.6%(197,027)
2000
White, non-Hispanic70.7%(353,760)
Black19.9%(99,648)
Hispanic / Latino5.3%(26,293)
Asian2.6%(12,856)
Diversity Score55%(274,967)
Diversity Score
55
+23%since 1990
from 45 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
29.5%
+4.3 ptssince 1990
from 25.2% in 1990
US average: 24.4%
High school or higher
85.5%
+4.8 ptssince 1990
from 80.6% in 1990
US average: 80.3%
Graduate degree
11.0%
+1.8 ptssince 1990
from 9.2% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
15.7 min
−17%since 1990
from 19.0 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to New Castle County

Delaware County
Pop 580,937
South Central Connecticut Planning Region
Pop 578,741
Ada County
Pop 546,141
Bristol County
Pop 593,640
Places similar to New Castle County
Head to head

Compare New Castle County to nearby counties

NEW CASTLE COUNTY VS
Salem County
Income$79,960+53%
Home value$239,500+80%
Population66,280−89%
SEE FULL COMPARISON →
NEW CASTLE COUNTY VS
Cecil County
Income$92,007+76%
Home value$343,400+158%
Population107,131−82%
SEE FULL COMPARISON →
NEW CASTLE COUNTY VS
Delaware County
Income$89,546+71%
Home value$332,200+150%
Population580,937−1%
SEE FULL COMPARISON →
NEW CASTLE COUNTY VS
Chester County
Income$127,208+143%
Home value$485,600+265%
Population557,116−5%
SEE FULL COMPARISON →
Frequently asked

How many people live in New Castle County, Delaware?

New Castle County, Delaware has about 500,265 residents according to the 2000 Census.

What is the median household income in New Castle County, Delaware?

The typical household in New Castle County, Delaware earns about $52,419 a year. Half of households make more than that, and half make less.

Is New Castle County, Delaware expensive?

In New Castle County, Delaware, the median home is worth about $132,900, and the typical rent is about $670 a month.

How educated are people in New Castle County, Delaware?

About 29.5% of adults age 25 and over in New Castle County, Delaware hold a bachelor's degree or higher.

What is the poverty rate in New Castle County, Delaware?

About 8.4% of people in New Castle County, Delaware live below the federal poverty line.

Has New Castle County, Delaware grown since 1990?

Yes, New Castle County, Delaware has grown since 1990. The population has added about 58,319 residents, a change of about 13 percent over that period.

Keep going

Explore from here

145 census tracts (top 20 by population)
Census Tract 166.11Census Tract 148.09Census Tract 145.02Census Tract 166.08Census Tract 166.10Census Tract 149.03Census Tract 166.12Census Tract 163.01Census Tract 168.08Census Tract 135.01Census Tract 148.10Census Tract 166.14Census Tract 164.01Census Tract 148.11Census Tract 149.09Census Tract 148.08Census Tract 135.08Census Tract 138Census Tract 136.11Census Tract 152
29 ZIP codes
ZIP 19720ZIP 19702ZIP 19709ZIP 19711ZIP 19701ZIP 19805ZIP 19808ZIP 19713ZIP 19810ZIP 19802ZIP 19803ZIP 19804ZIP 19707ZIP 19801ZIP 19703ZIP 19809ZIP 19734ZIP 19806ZIP 19807ZIP 19717ZIP 19706ZIP 19731ZIP 19730ZIP 19733ZIP 19736ZIP 19732ZIP 19716ZIP 19735ZIP 19710
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →