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

Population of Washington, 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   2025  +1 +5

8,001,020 people lived in Washington on July 1, 2025: the 13th-largest population among the 50 states and the District of Columbia. The median age was 38.8 years (United States: 39.4); more residents are 65 or older (18.3%) than under 15 (16.8%): an ageing, top-heavy pyramid. There were 99.7 men for every 100 women. Since 2010 the population has grown by 18.7%. Source: U.S. Census Bureau, Population Estimates Program, Vintage 2025 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, 2025
Population
8,001,020
Rank by population
13th of 51
Median age
38.8
Men per 100 women
99.7
Under 15
16.8%
15–64
65.0%
65 and over
18.3%
Child dependency
25.8
Old-age dependency
28.1
Change since 2010
+18.7%
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2025
AgeMenWomenTotalShare
0-4215,731206,568422,2995.3%
5-9231,489220,132451,6215.6%
10-14240,768227,915468,6835.9%
15-19246,384233,795480,1796.0%
20-24261,604238,898500,5026.3%
25-29306,778284,389591,1677.4%
30-34317,098299,236616,3347.7%
35-39310,940295,920606,8607.6%
40-44285,624277,003562,6277.0%
45-49245,765242,949488,7146.1%
50-54223,489225,305448,7945.6%
55-59219,521225,404444,9255.6%
60-64222,298235,454457,7525.7%
65-69210,420232,428442,8485.5%
70-74180,434208,185388,6194.9%
75-79136,549162,705299,2543.7%
80-8479,36399,812179,1752.2%
85+59,54291,125150,6671.9%
How Washington compares with similar-sized states, 2025
RankStateResidentsRelative
10 Michigan 10,127,884
11 New Jersey 9,548,215
12 Virginia 8,880,107
13 Washington 8,001,020
14 Arizona 7,623,818
15 Tennessee 7,315,076
16 Massachusetts 7,154,084
Frequently asked questions about Washington's population
What is the population of Washington?
Washington had an estimated 8,001,020 residents on July 1, 2025, according to the U.S. Census Bureau, Population Estimates Program. That ranks 13th among the 51 states and the District of Columbia.
What is the median age in Washington?
The median age in Washington was 38.8 years in 2025, the 37th oldest of the 51 states and DC. That is 0.6 years younger than the national median of 39.4.
How many people in Washington are 65 or older?
About 1,460,563 residents of Washington (18.3%) were 65 or older in 2025, against 16.8% under 15 and 65.0% aged 15 to 64.
What does the population pyramid of Washington show?
In 2025, Washington: more residents are 65 or older (18.3%) than under 15 (16.8%): an ageing, top-heavy pyramid. There were 99.7 men for every 100 women.
How fast is the population of Washington changing?
The population of Washington grew by 18.7% between 2010 and 2025, and by 0.9% in the last year.
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