Coulee Dam, Washington Demographics & Population 2026
During the 2020–2024 ACS period, Coulee Dam, Washington had a total population of 1,595, the 345th largest town in Washington, with a median household income of $66,732, which is 32% lower than the state average. The poverty rate is 15.8%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 32% below the state average, indicating significant economic challenges.
- Unemployment rate of 12.7% is notably above the national average.
Coulee Dam Quick Facts
How Coulee Dam Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 1,457 | 1,595 | +9.5% |
| Median household income | $67,868 | $66,732 | -1.7% |
| Median home value | $212,900 | $238,500 | +12.0% |
How Coulee Dam Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 56 | National average: 61
Education
Educational Attainment (Adults 25+)
Coulee Dam Rankings in Washington
Explore Washington Rankings
Other Cities in Grant County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Moses Lake | 26,083 | $74,752 | 15.8% | $310,000 |
| Ephrata | 8,560 | $69,551 | 20.8% | $252,000 |
| Quincy | 7,998 | $87,902 | 6.2% | $336,800 |
| Cascade Valley | 4,609 | $60,715 | 12.6% | N/A |
| Moses Lake North | 4,517 | $57,602 | 29.8% | $242,200 |
| Mattawa | 3,616 | $38,388 | 33.3% | N/A |
| Desert Aire | 2,788 | $85,960 | 7.8% | $455,100 |
| Warden | 2,581 | $57,743 | 20.9% | $189,900 |
| Royal City | 1,683 | $50,478 | 35.8% | $228,600 |
| Lakeview | 1,584 | $45,787 | 18.6% | $195,200 |
Cities Similar to Coulee Dam
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Dallesport | 1,603 | $71,707 | $377,600 | 19.4% | 7.2% |
| Tieton | 1,597 | $60,144 | $230,800 | 9.5% | 18.0% |
| Home | 1,665 | $64,884 | $403,500 | 32.0% | 5.5% |
| Stevenson | 1,603 | $76,563 | $496,500 | 36.6% | 11.9% |
| Darrington | 1,412 | $66,488 | $419,400 | 26.8% | 19.4% |
Population Overview
Coulee Dam is a small community located in Washington, within Grant County. The total population is 1,595. It ranks as the 345th most populous out of 628 Census-designated places in Washington.
Age Demographics
The median age in Coulee Dam is 38.0 years. This is about the same as the state median of 38.3 years.
Economy, Income & Housing
The median household income in Coulee Dam is $66,732. This is 32% lower than the state median of $98,141. It is also 17% lower than the national median of $80,734. The poverty rate stands at 15.8%. This is 59% higher than the state poverty rate of 9.9%. The unemployment rate is 12.7%. This is 150% higher than the state rate of 5.1%. The median home value is $238,500. Housing costs are 58% lower than the state median of $564,600. The home-value-to-income ratio is 3.6x. 67.5% of occupied housing units are owner-occupied. This homeownership rate is 6% higher than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Coulee Dam is White (non-Hispanic), making up 47.2% of the population. Hispanic or Latino residents account for 4.3%. The Black or African American population (0.6%) is well below the state average of 3.9%. The Hispanic or Latino population (4.3%) is well below the state average of 14.4%. The Asian population (1.4%) is well below the state average of 9.7%.
Education
28.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 28% lower than the state rate of 39.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.0%.
Data Sources & Methodology
All demographic data for Coulee Dam, Washington is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Washington state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 628 Census-designated places in Washington. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
Free data download: Get all Washington city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Coulee Dam, Washington?
Coulee Dam, Washington has a population of 1,595 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Coulee Dam, WA?
The median household income in Coulee Dam is $66,732, which is 17% lower than the national median of $80,734.
What is the poverty rate in Coulee Dam, WA?
The poverty rate in Coulee Dam is 15.8%. This means approximately 248 residents live below the federal poverty line.
What is the racial makeup of Coulee Dam, Washington?
Coulee Dam's population is 47.2% White, 0.6% Black, 4.3% Hispanic/Latino, and 1.4% Asian.
What is the median home value in Coulee Dam, WA?
The median home value in Coulee Dam is $238,500. The home-value-to-income ratio is 3.6x.
How educated is Coulee Dam, Washington?
28.6% of adults (25+) in Coulee Dam hold a bachelor's degree or higher, and 7.5% hold a graduate or professional degree.