New Castle County, Delaware Population 2018

New Castle County, Delaware's estimated population is 559,793 with a growth rate of 1.41% in the past year according to the most recent United States census data. New Castle County, Delaware is the 1st largest county in Delaware.

Year Population Growth Growth Rate
2017559,7937,7961.41%
2016551,997-5,854-1.05%
2016557,8512,2640.41%
2015555,5873,1220.57%
2014552,4652,9790.54%
2013549,4863,3660.62%
2012546,1203,8380.71%
2011542,2823,4510.64%
2010538,83196,88521.92%
1990441,94643,83111.01%
1980398,11512,2593.18%
1970385,85678,41025.50%
1960307,44688,56740.46%
1950218,87939,31721.90%
1940179,56218,53011.51%
1930161,03212,7938.63%
1920148,23925,05120.34%
1910123,18813,49112.30%
1900109,69712,51512.88%
189097,18219,46625.05%
188077,71614,20122.36%
187063,5158,71815.91%
186054,79712,01728.09%
185042,7809,66029.17%
184033,1203,40011.44%
183029,7201,8216.53%
182027,8993,47014.20%
181024,429-932-3.67%
180025,3615,67328.81%
179019,6880.00%

New Castle County, Delaware Population Growth

Population Data via

Population by Race

Race Population
White359,253
Black or African American134,502
Asian28,581
Two or More Races14,080
Some Other Race14,025
American Indian and Alaska Native1,347
Native Hawaiian and Other Pacific Islander209

Race Data via US Census (2016 ACS 5-Year Survey)

New Castle County, Delaware Population Pyramid 2018

0%2%4%6%8% Male Population0%2%4%6%8% Female Population80757065605550454035302520151050

Data via US Census (2016 ACS 5-Year Survey): Table S0101

New Castle County, Delaware Median Age

37.6


Total

36.2


Male

39


Female

New Castle County, Delaware Adults

There are 429,454 adults, (76,176 of which are seniors) in New Castle County, Delaware.

New Castle County, Delaware Age Dependency

56.2

Age Dependency Ratio

21.5

Old Age Dependency Ratio

34.6

Child Dependency Ratio

New Castle County, Delaware Sex Ratio

Female

284,721

51.58%

Male

267,276

48.42%

New Castle County, Delaware Households and Families

New Castle County, Delaware Renter vs Owner Occupied by Household Type

New Castle County, Delaware Household Types

Type Owner Renter
Married84.7%15.3%
All68.7%31.3%
Male67.3%32.7%
Non Family53.6%46.4%
Female52.7%47.3%

68.7%

Rate of Home Ownership

New Castle County, Delaware Households by Type

Type Count Average Size Owned
All202,5242.6468.7
Married94,6093.2784.7
Non Family69,6001.3153.6
Female28,5033.4752.7
Male9,8123.5967.3

3.24

Average Family Size

2.64

Average Household Size

6.3%

Unmarried (Opposite Sex)

0.4%

Unmarried (Same Sex)

New Castle County, Delaware Households

New Castle County, Delaware Education

New Castle County, Delaware Educational Attainment by Sex (over 25)

Education Attained Count Percentage
Less Than 9th Grade11,8263.17%
9th to 12th Grade23,7856.37%
High School Graduate107,88928.90%
Some College71,71119.21%
Associates Degree25,8426.92%
Bachelors Degree77,94320.88%
Graduate Degree54,32014.55%

New Castle County, Delaware Educational Attainment by Race

Name Total High School Bachelors
White237,708223,04091,656
Black85,47875,97420,448
Hispanic27,31417,6414,506
Asian19,49817,96514,333
Other Race8,1485,1361,296
Multiple Races4,5193,9931,501
Native American869737279
Islander1438521

The highest rate of high school graduation is among white people with a rate of 93.83%.

The highest rate of bachelors degrees is among white people with a rate of 73.51%.

New Castle County, Delaware Earnings by Educational Attainment

Name Average Male Female
Overall$42,490$50,354$37,921
Less Than High School$22,937$27,029$17,944
High School Grad$31,888$38,568$27,309
Some College$39,698$45,919$35,054
Bachelors Degree$55,473$63,802$48,665
Graduate Degree$71,232$85,796$60,063

$42,490

Average Earnings

$50,354

Average Male

$37,921

Average Female

New Castle County, Delaware Language

New Castle County, Delaware Language by Age

New Castle County, Delaware Language

85.37% of New Castle County, Delaware residents speak only English, while 14.63% speak other languages. The largest non-English language is Spanish, which is spoken by 7.38% of the population.

New Castle County, Delaware Poverty

New Castle County, Delaware Poverty by Race

Name Total In Poverty Poverty Rate
White316,79323,0197.27%
Black129,92422,48717.31%
Hispanic50,62312,31424.32%
Other13,7253,23323.56%
Multiple13,6852,48818.18%
Asian28,1831,8796.67%
Native1,2981158.86%
Islander198147.07%

11.36%

Overall Poverty Rate

10.10%

Male Poverty Rate

12.53%

Female Poverty Rate

Poverty in New Castle County, Delaware

The race most likely to be in poverty in New Castle County, Delaware is Hispanic, with 24.32% below the poverty level.

The race least likely to be in poverty in New Castle County, Delaware is Asian, with 6.67% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.54%. Among those working part-time, it was 14.73%, and for those that did not work, the poverty rate was 19.52%.

New Castle County, Delaware Poverty Rate by Education

Name Poverty
Less Than High School22.82%
High School11.99%
Some College7.78%
Bachelors or Greater3.40%

New Castle County, Delaware Poverty Rate by Employment Status and Sex

Name Poverty
Female Unemployed28.74%
Male Unemployed22.46%
Female Employed5.82%
Male Employed3.83%

New Castle County, Delaware Income

New Castle County, Delaware Income by Household Type

Name Median Mean
Households$66,283$87,395
Families$81,762$103,259
Married Families$99,420$121,721
Non Families$39,666$53,491

New Castle County, Delaware Marital Status

New Castle County, Delaware Marital Status

Marriage Rates

45.4%

Overall Marriage Rate

47.5%

Male Marriage Rate

43.4%

Female Marriage Rate

New Castle County, Delaware Married by Age and Sex

New Castle County, Delaware Marriage

The age group where males are most likely to be married is Over65, while the female age group most likely to be married is 45To54.

New Castle County, Delaware Marital Status by Race

New Castle County, Delaware Veterans

New Castle County, Delaware Veterans by War

30,749

Number of Veterans

28,346

Male Veterans

2,403

Female Veterans

Name Veterans
Vietnam10,835
First Gulf War4,576
Second Gulf War3,408
Korea3,109
World War II1,873

New Castle County, Delaware Veterans by Age

Name Veterans
65 to 747,751
75+7,477
35 to 547,008
55 to 646,696
18 to 341,817

New Castle County, Delaware Veterans by Race

Name Veterans % of Total
White22,6847.83%
Black7,0527.09%
Hispanic1,3514.02%
2 or More3936.03%
Asian2561.15%
Other2372.39%
Indian10610.34%
Hawaiian2113.29%

New Castle County, Delaware Veterans by Education

5.42%

Veteran Poverty Rate

24.86%

Veteran Disability Rate

New Castle County, Delaware Employment Status

New Castle County, Delaware Employment by Age

65.5%

Labor Force Participation

60.9%

Employment Rate

6.9%

Unemployment Rate

New Castle County, Delaware Employment by Race

New Castle County, Delaware Employment by Education

Population of Cities in New Castle County, Delaware

City 2010 Census 2016 Estimated Growth Growth Rate
Wilmington70852714425900.83%
Newark315133339818855.98%
Middletown1887120876200510.62%
Smyrna 1000111371137013.70%
Elsmere61316106-25-0.41%
New Castle52855357721.36%
Clayton 291231572458.41%
Townsend2049231326412.88%
Delaware City16951742472.77%
Bellefonte11931178-15-1.26%
Newport10551050-5-0.47%
Arden439450112.51%
Odessa36437282.20%
Ardentown26427393.41%
Ardencroft23123762.60%
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990