Washington County, Minnesota Age & Gender Statistics (2024)

Total Population

276,238

Median Age

39.8

Male Median

39.0

Female Median

40.5

Washington County, Minnesota Population Growth

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Washington County, Minnesota Demographic Trend

Since 2010, the population of has changed by +18.8%%.

+18.8%% Growth

Washington County, Minnesota Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Washington County, Minnesota Historical Population Data

YearMedian AgePopulation
202439.8276,238
202339.9272,298
202239.8268,651
202139.6264,818
202039.5259,072
201939.5255,938
201839.3253,317
201739.2250,979
201639.0248,745
201538.9246,670
201438.7244,103
201338.5241,315
201238.2238,721
201138.1235,802
201037.6232,536

Washington County, Minnesota Age Group Breakdown (2024)

Age CohortPercentage
Under 55.6%
5–1718.4%
18–247.7%
25–3411.4%
35–5426.8%
55–6413.5%
65+16.6%

Dependency Ratios for Washington County, Minnesota

Total Dependency Ratio:
68.4
Youth Dependency:
40.3
Old-Age Dependency:
28.0

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Washington County, Minnesota

The median age in Washington County, Minnesota is 39.8 years.

According to latest Census data, the total population of Washington County, Minnesota is 276,238.

In Washington County, Minnesota, seniors (ages 65+) make up 16.6% of the population, while children under 18 represent 18.4%.

Based on historical data since 2010, the population in Washington County, Minnesota is aging.
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