5th most populous of 87
With 283,960 residents in 2024, Washington County ranks 5th by population among Minnesota's 87 counties and is home to 4.9% of the state's residents.

Washington County has the 2nd most expensive homes in Minnesota (median value $422,000) and the 3rd highest median household income ($115,345).
Washington County is home to 283,960 people (2024 estimate) on 385 square miles of land. This page brings together official U.S. Census Bureau population estimates since 2000, the components of change—births, deaths and migration—American Community Survey indicators on income, housing, poverty and education, BEA economic accounts and BLS unemployment.
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U.S. Census Bureau: intercensal estimates 2000–2009, Vintage 2020 (2010–2019) and Vintage 2024 (2020–2024), July 1.
| Indicator | Value | Year and source |
|---|---|---|
| Population estimate | 283,960 | 2024 · U.S. Census Bureau |
| Population, 2010 Census | 238,136 | 2010 · U.S. Census Bureau |
| Population, 2000 | 202,686 | July 1, 2000 · Census intercensal |
| Change since 2000 | +40.1% | 2000–2024 · Census |
| International migration | +885 | 2024 · Census Vintage 2024 |
| Domestic migration | +3,019 | 2024 · Census Vintage 2024 |
| Birth rate | 9.8 per 1,000 | 2024 · calculated |
| Death rate | 7.3 per 1,000 | 2024 · calculated |
| Population rank in Minnesota | 5th of 87 | 2024 · calculated |
| Per capita personal income | $86,217 | BEA, 2024 · official |
| Gross domestic product | $17.1 billion | BEA, current dollars, 2024 · official |
| Median household income | $115,345 | ACS 2020–2024 5-year · official |
| Poverty rate | 5.1% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 49.1% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 8.5% | ACS 2020–2024 5-year · official |
| Median home value | $422,000 | ACS 2020–2024 5-year · official |
| Median gross rent | $1,710/month | ACS 2020–2024 5-year · official |
| Median age | 39.8 years | ACS 2020–2024 5-year · official |
| Households | 105,577 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 81.3% | ACS 2020–2024 5-year · official |
Comparable indicators for Washington County, Minnesota and the United States.
| Indicator | County | Minnesota | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | +6.1% | +1.5% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 9.8 | 10.6 | 10.6 | 2024 |
| Death rate (per 1,000) | 7.3 | 8.6 | 9.1 | 2024 |
| Net migration rate (per 1,000) | 13.7 | 4.9 | 8.2 | 2024 |
| Population density (/mi²) | 738.1 | 72.7 | 96.3 | 2024 |
| Per capita personal income | $86,217 | $75,603 | $73,204 | BEA, 2024 |
| Median household income | $115,345 | $89,062 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 5.1% | 9.3% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 49.1% | 39.4% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 8.5% | 8.7% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $422,000 | $329,300 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $1,710/month | $1,280/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 39.8 years | 38.8 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 81.3% | 72.2% | 65.2% | ACS 2020–2024 5-year |
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With 283,960 residents in 2024, Washington County ranks 5th by population among Minnesota's 87 counties and is home to 4.9% of the state's residents.
Its population went from 202,686 in 2000 to 283,960 in 2024, a change of +40.1%, compared with +17.4% for Minnesota as a whole.
In the year to July 2024 the county recorded 2,775 births and 2,077 deaths, so births outnumbered deaths by 698.
Annual Census estimates since 2000 put the county's highest population in 2024, at 283,960.
Washington County has about 738.1 residents per square mile of land, ranking 5th of 87 counties; Minnesota averages 72.7.
With a median household income of $115,345 (ACS 2020–2024 5-year), the county ranks 3rd of 87 Minnesota counties; the state median is $89,062.
Its economy produced $17.1 billion of GDP in 2024 (BEA), 5th largest among 87 Minnesota counties.
Real GDP grew 4.4% in 2024, adjusted for inflation (BEA, chained 2017 dollars).