Share of the population by age and sex, five-year groups

Population of Delaware, 2010–2025 · click to pick a year
Estimates up to 2019 are built on the 2010 Census, those from 2020 on the 2020 Census. A line that steps up or down between 2019 and 2020 reflects this re-basing, not a sudden change in population.

Year

-5 -1   2010  +1 +5

899,647 people lived in Delaware on July 1, 2010: the 45th-largest population among the 50 states and the District of Columbia. The median age was 38.9 years (United States: 37.2); children under 15 (18.8%) clearly outnumber residents 65 and older (14.5%): a relatively young population. There were 93.9 men for every 100 women. Source: U.S. Census Bureau, Population Estimates Program, Vintage 2020 estimates (resident population on July 1; public domain). Median age, shares, dependency ratios and rankings are calculated by PopulationPyramid.net from these estimates; the Census Bureau does not endorse this site.

Key indicators, 2010
Population
899,647
Rank by population
45th of 51
Median age
38.9
Men per 100 women
93.9
Under 15
18.8%
15–64
66.7%
65 and over
14.5%
Child dependency
28.2
Old-age dependency
21.7
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2010
AgeMenWomenTotalShare
0-428,41927,46455,8836.2%
5-928,73927,68956,4286.3%
10-1428,95127,92356,8746.3%
15-1932,39131,68864,0797.1%
20-2431,69231,55963,2517.0%
25-2928,79528,94257,7376.4%
30-3426,58327,62254,2056.0%
35-3926,80528,06054,8656.1%
40-4429,30931,28460,5936.7%
45-4932,70434,73067,4347.5%
50-5431,80334,42866,2317.4%
55-5927,39930,92158,3206.5%
60-6425,18928,45853,6476.0%
65-6919,53322,54542,0784.7%
70-7414,27716,65530,9323.4%
75-7910,65013,23523,8852.7%
80-847,26110,09417,3551.9%
85+5,17310,67715,8501.8%
How Delaware compares with similar-sized states, 2010
RankStateResidentsRelative
42 New Hampshire 1,316,807
43 Rhode Island 1,053,994
44 Montana 990,730
45 Delaware 899,647
46 South Dakota 816,193
47 Alaska 713,982
48 North Dakota 674,752
Frequently asked questions about Delaware's population
What is the population of Delaware?
Delaware had an estimated 899,647 residents on July 1, 2010, according to the U.S. Census Bureau, Population Estimates Program. That ranks 45th among the 51 states and the District of Columbia.
What is the median age in Delaware?
The median age in Delaware was 38.9 years in 2010, the 13th oldest of the 51 states and DC. That is 1.7 years older than the national median of 37.2.
How many people in Delaware are 65 or older?
About 130,100 residents of Delaware (14.5%) were 65 or older in 2010, against 18.8% under 15 and 66.7% aged 15 to 64.
What does the population pyramid of Delaware show?
In 2010, Delaware: children under 15 (18.8%) clearly outnumber residents 65 and older (14.5%): a relatively young population. There were 93.9 men for every 100 women.
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