Belfair, Washington Demographics & Population 2026
During the 2020–2024 ACS period, Belfair, Washington had a total population of 4,557, the 208th largest community in Washington, with a median household income of $88,150, which is 10% lower than the state average. The poverty rate is 6.4%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Belfair Quick Facts
How Belfair 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 | 4,601 | 4,557 | -1.0% |
| Median household income | $74,477 | $88,150 | +18.4% |
| Median home value | $307,600 | $380,400 | +23.7% |
How Belfair 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+)
Belfair Rankings in Washington
Explore Washington Rankings
Other Cities in Mason County
Cities Similar to Belfair
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Boulevard Park | 4,575 | $78,954 | $456,100 | 18.5% | 28.0% |
| Longbranch | 4,638 | $95,768 | $396,000 | 22.2% | 18.4% |
| Chelan | 4,350 | $82,637 | $518,000 | 28.3% | 8.4% |
| Moxee | 4,625 | $100,512 | $362,800 | 26.6% | 7.8% |
| Bethel | 4,394 | $79,583 | $473,900 | 21.7% | 16.2% |
Population Overview
Belfair is a small community located in Washington, within Mason County. The total population is 4,557. It ranks as the 208th most populous out of 628 Census-designated places in Washington.
Age Demographics
The median age in Belfair is 33.1 years. This is 14% lower than the state median of 38.3 years. With 30.4% of the population under 18, Belfair has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Belfair is $88,150. This is 10% lower than the state median of $98,141. It is also 9% higher than the national median of $80,734. The poverty rate stands at 6.4%. This is 35% lower than the state poverty rate of 9.9%. The unemployment rate is 7.4%. This is 45% higher than the state rate of 5.1%. The median home value is $380,400. Housing costs are 33% lower than the state median of $564,600. The home-value-to-income ratio is 4.3x. 76.5% of occupied housing units are owner-occupied. This homeownership rate is 20% higher than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Belfair is White (non-Hispanic), making up 70.8% of the population. Hispanic or Latino residents account for 12.4%. The Asian population (2.7%) is well below the state average of 9.7%.
Education
15.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 62% 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 88.9%.
Data Sources & Methodology
All demographic data for Belfair, 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 Belfair, Washington?
Belfair, Washington has a population of 4,557 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Belfair, WA?
The median household income in Belfair is $88,150, which is 9% higher than the national median of $80,734.
What is the poverty rate in Belfair, WA?
The poverty rate in Belfair is 6.4%. This means approximately 293 residents live below the federal poverty line.
What is the racial makeup of Belfair, Washington?
Belfair's population is 70.8% White, 3.3% Black, 12.4% Hispanic/Latino, and 2.7% Asian.
What is the median home value in Belfair, WA?
The median home value in Belfair is $380,400. The home-value-to-income ratio is 4.3x.
How educated is Belfair, Washington?
15.0% of adults (25+) in Belfair hold a bachelor's degree or higher, and 4.1% hold a graduate or professional degree.