Washington County is a county of 276,238 people in Minnesota. That puts it in the top 1% of US counties for household income. 81% of homes are owner-occupied. This is an unusually credentialed place: 49% of adults have a four-year degree. The population is up 37% since 2000. That is roughly 30% ahead of the Minnesota median.
At a glance
Wealthier
median household income $115,345, above the US median
US median: $82,259
Mid-age
median age 39.8
US median: 38.9
More educated
49% hold a bachelor's degree
US average: 36%
Less affordable
home values up 48%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Washington County
What changed most since 1990
Population145,896 → 276,238(+89%)US over the same years: +35%
Adults with a bachelor's degree26.2% → 49.1%(+22.8 pts)US over the same years: +15.3 pts
Hispanic share1.4% → 5.3%(+3.9 pts)US over the same years: +9.9 pts
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)24.5%(2,804)
US avg: 26.4%
Gulf War (1990s)19%(2,168)
US avg: 24.3%
Vietnam era32.4%(3,704)
US avg: 33.1%
Korean War6.3%(726)
US avg: 4.5%
World War II1.2%(136)
US avg: 1%
Share of the 11,439 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Washington County, decade by decade
Washington County population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
145,896
$105,896
$225,846
26.2%
10.1
2000
201,130
$120,785
$284,543
33.9%
17.8
2010
238,136
$113,804
$380,934
40.0%
32.5
2020
267,568
$118,276
$364,824
45.6%
47.9
2024
276,238
$115,345
$422,000
49.1%
48.9
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
How many people live in Washington County, Minnesota?
Washington County, Minnesota has about 276,238 residents according to the 2024 American Community Survey.
What is the median household income in Washington County, Minnesota?
The typical household in Washington County, Minnesota earns about $115,345 a year. Half of households make more than that, and half make less.
Is Washington County, Minnesota expensive?
In Washington County, Minnesota, the median home is worth about $422,000, and the typical rent is about $1,710 a month.
How educated are people in Washington County, Minnesota?
About 49.1% of adults age 25 and over in Washington County, Minnesota hold a bachelor's degree or higher.
What is the poverty rate in Washington County, Minnesota?
About 5.1% of people in Washington County, Minnesota live below the federal poverty line.
Has Washington County, Minnesota grown since 1990?
Yes, Washington County, Minnesota has grown since 1990. The population has added about 130,342 residents, a change of about 89 percent over that period.