6th most populous of 39
With 302,912 residents in 2024, Thurston County ranks 6th by population among Washington's 39 counties and is home to 3.8% of the state's residents.

Thurston County has the 6th highest median household income in Washington ($96,563) and the 6th highest share of college graduates (38.5% of adults).
Thurston County is home to 302,912 people (2024 estimate) on 723 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.
Pick an indicator to see its long-run evolution.
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 | 302,912 | 2024 · U.S. Census Bureau |
| Population, 2010 Census | 252,264 | 2010 · U.S. Census Bureau |
| Population, 2000 | 208,287 | July 1, 2000 · Census intercensal |
| Change since 2000 | +45.4% | 2000–2024 · Census |
| International migration | +1,102 | 2024 · Census Vintage 2024 |
| Domestic migration | +2,134 | 2024 · Census Vintage 2024 |
| Birth rate | 9.9 per 1,000 | 2024 · calculated |
| Death rate | 9.4 per 1,000 | 2024 · calculated |
| Population rank in Washington | 6th of 39 | 2024 · calculated |
| Per capita personal income | $69,277 | BEA, 2024 · official |
| Gross domestic product | $21.6 billion | BEA, current dollars, 2024 · official |
| Median household income | $96,563 | ACS 2020–2024 5-year · official |
| Poverty rate | 9.5% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 38.5% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 8.3% | ACS 2020–2024 5-year · official |
| Median home value | $480,300 | ACS 2020–2024 5-year · official |
| Median gross rent | $1,736/month | ACS 2020–2024 5-year · official |
| Median age | 40.0 years | ACS 2020–2024 5-year · official |
| Households | 118,899 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 67.7% | ACS 2020–2024 5-year · official |
Comparable indicators for Thurston County, Washington and the United States.
| Indicator | County | Washington | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | +2.8% | +3.3% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 9.9 | 10.3 | 10.6 | 2024 |
| Death rate (per 1,000) | 9.4 | 8.2 | 9.1 | 2024 |
| Net migration rate (per 1,000) | 10.7 | 10.6 | 8.2 | 2024 |
| Population density (/mi²) | 419.3 | 119.8 | 96.3 | 2024 |
| Per capita personal income | $69,277 | $85,187 | $73,204 | BEA, 2024 |
| Median household income | $96,563 | $98,141 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 9.5% | 9.9% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 38.5% | 39.6% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 8.3% | 15.4% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $480,300 | $564,600 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $1,736/month | $1,760/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 40.0 years | 38.3 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 67.7% | 63.8% | 65.2% | ACS 2020–2024 5-year |
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With 302,912 residents in 2024, Thurston County ranks 6th by population among Washington's 39 counties and is home to 3.8% of the state's residents.
Its population went from 208,287 in 2000 to 302,912 in 2024, a change of +45.4%, compared with +34.6% for Washington as a whole.
In the year to July 2024 the county recorded 2,990 births and 2,840 deaths, so births outnumbered deaths by 150.
Annual Census estimates since 2000 put the county's highest population in 2024, at 302,912.
Thurston County has about 419.3 residents per square mile of land, ranking 5th of 39 counties; Washington averages 119.8.
With a median household income of $96,563 (ACS 2020–2024 5-year), the county ranks 6th of 39 Washington counties; the state median is $98,141.
Its economy produced $21.6 billion of GDP in 2024 (BEA), 6th largest among 39 Washington counties.
Real GDP grew 5.2% in 2024, adjusted for inflation (BEA, chained 2017 dollars).