Sumas, Washington Demographics & Population 2026
During the 2020–2024 ACS period, Sumas, Washington had a total population of 1,512, the 352nd largest city in Washington, with a median household income of $89,375, which is 9% lower than the state average. The poverty rate is 9.7%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Sumas Quick Facts
How Sumas 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 | 1,384 | 1,512 | +9.2% |
| Median household income | $86,500 | $89,375 | +3.3% |
| Median home value | $362,000 | $441,500 | +22.0% |
How Sumas 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
Moderate diversity with one or two groups making up the majority.
State average: 56 | National average: 61
Education
Educational Attainment (Adults 25+)
Sumas Rankings in Washington
Explore Washington Rankings
Other Cities in Whatcom County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Bellingham | 93,438 | $66,755 | 18.6% | $627,500 |
| Lynden | 16,234 | $103,233 | 7.2% | $596,600 |
| Ferndale | 15,999 | $87,579 | 12.8% | $549,300 |
| Birch Bay | 10,837 | $86,854 | 9.4% | $477,200 |
| Blaine | 6,100 | $84,030 | 13.1% | $549,600 |
| Sudden Valley | 6,084 | $100,930 | 7.6% | $489,200 |
| Marietta-Alderwood | 3,754 | $76,019 | 7.9% | $547,100 |
| Everson | 3,040 | $80,250 | 5.5% | $450,300 |
| Peaceful Valley | 2,858 | $59,625 | 17.1% | $317,800 |
| Geneva | 2,073 | $142,188 | 1.8% | $801,100 |
Cities Similar to Sumas
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Manson | 1,462 | $91,319 | $596,700 | 33.4% | 22.6% |
| Freeland | 1,548 | $83,241 | $522,000 | 35.2% | 12.1% |
| Anderson Island | 1,448 | $80,282 | $546,300 | 44.0% | 23.1% |
| Duluth | 1,656 | $92,034 | $733,600 | 48.1% | 14.5% |
| Sunday Lake | 1,375 | $91,500 | $697,100 | 23.4% | 8.9% |
Population Overview
Sumas is a small community located in Washington, within Whatcom County. The total population is 1,512. It ranks as the 352nd most populous out of 628 Census-designated places in Washington.
Age Demographics
The median age in Sumas is 31.7 years. This is 17% lower than the state median of 38.3 years. With 32.5% of the population under 18, Sumas has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Sumas is $89,375. This is 9% lower than the state median of $98,141. It is also 11% higher than the national median of $80,734. The poverty rate stands at 9.7%. This is 2% lower than the state poverty rate of 9.9%. The unemployment rate is 2.5%. This is 50% lower than the state rate of 5.1%. The median home value is $441,500. Housing costs are 22% lower than the state median of $564,600. The home-value-to-income ratio is 4.9x. 67.2% of occupied housing units are owner-occupied. This homeownership rate is 5% higher than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Sumas is White (non-Hispanic), making up 67.6% of the population. Hispanic or Latino residents account for 18.6%. The Black or African American population (0.3%) is well below the state average of 3.9%. The Asian population (2.0%) is well below the state average of 9.7%.
Education
13.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 66% 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 82.3%.
Data Sources & Methodology
All demographic data for Sumas, 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.
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Frequently Asked Questions
What is the population of Sumas, Washington?
Sumas, Washington has a population of 1,512 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Sumas, WA?
The median household income in Sumas is $89,375, which is 11% higher than the national median of $80,734.
What is the poverty rate in Sumas, WA?
The poverty rate in Sumas is 9.7%. This means approximately 145 residents live below the federal poverty line.
What is the racial makeup of Sumas, Washington?
Sumas's population is 67.6% White, 0.3% Black, 18.6% Hispanic/Latino, and 2.0% Asian.
What is the median home value in Sumas, WA?
The median home value in Sumas is $441,500. The home-value-to-income ratio is 4.9x.
How educated is Sumas, Washington?
13.4% of adults (25+) in Sumas hold a bachelor's degree or higher, and 6.2% hold a graduate or professional degree.