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   2018  +1 +5

7,526,793 people lived in Washington on July 1, 2018: the 13th-largest population among the 50 states and the District of Columbia. The median age was 37.7 years (United States: 38.2); children (18.4%) and older adults (15.4%) make up similar shares of the population. There were 100.1 men for every 100 women. Since 2010 the population has grown by 11.6%. 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, 2018
Population
7,526,793
Rank by population
13th of 51
Median age
37.7
Men per 100 women
100.1
Under 15
18.4%
15–64
66.1%
65 and over
15.4%
Child dependency
27.9
Old-age dependency
23.3
Change since 2010
+11.6%
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2018
AgeMenWomenTotalShare
0-4235,013222,844457,8576.1%
5-9238,416228,903467,3196.2%
10-14236,810225,736462,5466.1%
15-19227,908217,844445,7525.9%
20-24252,395230,545482,9406.4%
25-29307,990282,110590,1007.8%
30-34289,666273,754563,4207.5%
35-39273,900262,999536,8997.1%
40-44236,006230,190466,1966.2%
45-49239,407234,650474,0576.3%
50-54229,217229,065458,2826.1%
55-59242,383248,951491,3346.5%
60-64227,000242,035469,0356.2%
65-69190,573209,677400,2505.3%
70-74144,603161,986306,5894.1%
75-7991,879105,663197,5422.6%
80-8454,25669,464123,7201.6%
85+48,59284,363132,9551.8%
How Washington compares with similar-sized states, 2018
RankStateResidentsRelative
10 Michigan 9,987,286
11 New Jersey 8,891,730
12 Virginia 8,510,920
13 Washington 7,526,793
14 Arizona 7,164,228
15 Massachusetts 6,885,720
16 Tennessee 6,778,180
Frequently asked questions about Washington's population
What is the population of Washington?
Washington had an estimated 7,526,793 residents on July 1, 2018, 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 37.7 years in 2018, the 36th oldest of the 51 states and DC. That is 0.5 years younger than the national median of 38.2.
How many people in Washington are 65 or older?
About 1,161,056 residents of Washington (15.4%) were 65 or older in 2018, against 18.4% under 15 and 66.1% aged 15 to 64.
What does the population pyramid of Washington show?
In 2018, Washington: children (18.4%) and older adults (15.4%) make up similar shares of the population. There were 100.1 men for every 100 women.
How fast is the population of Washington changing?
The population of Washington grew by 11.6% between 2010 and 2018, and by 1.3% in the last year.
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