Mountlake Terrace, Washington Demographics & Population 2026
During the 2020–2024 ACS period, Mountlake Terrace, Washington had a total population of 23,104, the 59th largest city in Washington, with a median household income of $107,687, which is 10% higher than the state average. The poverty rate is 7.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Mountlake Terrace Quick Facts
How Mountlake Terrace 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 | 21,419 | 23,104 | +7.9% |
| Median household income | $101,404 | $107,687 | +6.2% |
| Median home value | $606,100 | $667,300 | +10.1% |
How Mountlake Terrace 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+)
Mountlake Terrace Rankings in Washington
Explore Washington Rankings
Other Cities in Snohomish County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Everett | 111,845 | $83,512 | 12.9% | $565,300 |
| Marysville | 73,002 | $103,974 | 8.1% | $567,900 |
| Edmonds | 42,735 | $122,449 | 3.8% | $890,100 |
| Lake Stevens | 40,253 | $122,336 | 5.2% | $635,600 |
| Lynnwood | 40,110 | $77,704 | 14.1% | $686,900 |
| Mill Creek East | 25,453 | $192,937 | 4.1% | $905,400 |
| Eastmont | 23,721 | $138,912 | 6.3% | $784,000 |
| North Lynnwood | 23,339 | $101,088 | 7.2% | $616,400 |
| Martha Lake | 22,634 | $124,494 | 8.3% | $785,400 |
| Silver Firs | 22,306 | $163,418 | 5.9% | $859,900 |
Cities Similar to Mountlake Terrace
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| North Lynnwood | 23,339 | $101,088 | $616,400 | 43.8% | 7.2% |
| Battle Ground | 21,886 | $104,977 | $485,100 | 26.7% | 5.9% |
| Martha Lake | 22,634 | $124,494 | $785,400 | 50.2% | 8.3% |
| Five Corners | 21,194 | $106,192 | $459,600 | 25.7% | 8.6% |
| Frederickson | 25,383 | $109,500 | $477,400 | 20.0% | 5.7% |
Population Overview
Mountlake Terrace is a small city located in Washington, within Snohomish County. The total population is 23,104. It ranks as the 59th most populous out of 628 Census-designated places in Washington.
Age Demographics
The median age in Mountlake Terrace is 38.3 years. This is about the same as the state median of 38.3 years.
Economy, Income & Housing
The median household income in Mountlake Terrace is $107,687. This is 10% higher than the state median of $98,141. It is also 33% higher than the national median of $80,734. The poverty rate stands at 7.0%. This is 29% lower than the state poverty rate of 9.9%. The unemployment rate is 4.2%. This is 17% lower than the state rate of 5.1%. The median home value is $667,300. Housing costs are 18% higher than the state median of $564,600. The home-value-to-income ratio of 6.2x suggests that housing affordability is a significant concern for many residents. 56.9% of occupied housing units are owner-occupied. This homeownership rate is 11% lower than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Mountlake Terrace is White (non-Hispanic), making up 59.8% of the population. Hispanic or Latino residents account for 15.3%.
Education
43.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 9% higher 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 94.3%.
Data Sources & Methodology
All demographic data for Mountlake Terrace, 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 Mountlake Terrace, Washington?
Mountlake Terrace, Washington has a population of 23,104 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Mountlake Terrace, WA?
The median household income in Mountlake Terrace is $107,687, which is 33% higher than the national median of $80,734.
What is the poverty rate in Mountlake Terrace, WA?
The poverty rate in Mountlake Terrace is 7.0%. This means approximately 1,606 residents live below the federal poverty line.
What is the racial makeup of Mountlake Terrace, Washington?
Mountlake Terrace's population is 59.8% White, 4.2% Black, 15.3% Hispanic/Latino, and 11.5% Asian.
What is the median home value in Mountlake Terrace, WA?
The median home value in Mountlake Terrace is $667,300. The home-value-to-income ratio is 6.2x.
How educated is Mountlake Terrace, Washington?
43.0% of adults (25+) in Mountlake Terrace hold a bachelor's degree or higher, and 14.9% hold a graduate or professional degree.