Population
21,419 residents
Census ACS 2023 - Washington
City profile · Washington · Census ACS 2023
Population, income, housing, safety, climate and schools for Mountlake Terrace - drawn straight from Census ACS, FBI UCR, NOAA, NCES, HUD and FEMA, refreshed on the 2024–2025 release cycle.
Mountlake Terrace - the verdict
Nationally, Mountlake Terrace sits in the 79th percentile for household income and the 24th percentile for safety among US cities with a population of 1,000 or more. Source: Census ACS + FBI UCR.
Population, income, and housing-cost figures come from the U.S. Census Bureau American Community Survey 5-year estimates (B-series tables). Crime data uses FBI UCR; climate uses NOAA Climate Normals; school counts come from NCES Common Core of Data; permits use the Census Building Permits Survey (BPS). See our methodology page for the full ETL pipeline and OMB / FIPS join keys.
Washington's Mountlake Terrace is a small city, with 21,419 residents per the latest Census Bureau ACS figures. The typical household in Mountlake Terrace brings in $101,404 a year, placing it in the top quartile of U.S. cities for household income, with a poverty rate of 4.5%. Typical homes in Mountlake Terrace are valued around $606,100, and the median resident age is 38.2 years. 41.9% of adults here have a bachelor's degree or higher; 64.5% of working-age residents are in the labor force.
Housing supply pressure shows in Census Building Permit Survey data: 21 residential units were authorized in 2024 (Construction Slowdown), down 30% from five years earlier. Crime here tracks close to the national norm: FBI UCR figures show 2384.8 crimes per 100,000 residents, near the national average (reporting is voluntary across agencies, so treat this as reporting activity rather than a definitive danger score).
Washington carries a cost-of-living premium: BEA Regional Price Parities 2024 puts Washington at 107.0 on a 100-equals-national-average scale (Above Average). A typical two-bedroom carries a HUD Fair Market Rent of $2,031 per month statewide. Monthly utility costs average around $188 across Washington, per EIA 2023 residential energy estimates. Commute times here average 24.0 minutes, with 61.9% driving alone and 22.6% working from home, per Census ACS commuting data. FEMA's National Risk Index rates natural-hazard exposure at 92.3 out of 100 (Very High).
Population
21,419 residents
Census ACS 2023 - Washington
Median Household Income
$101,404 /yr
Poverty 4.5%
Cost of Living Index (state)
107.0 (US=100)
Above Average - BEA RPP 2024, Washington average
Where Mountlake Terrace sits among all US cities (population 1,000+) on each measure, computed live from Census and FBI data.
"Safer than" reflects total crime rate from FBI UCR; the others use Census ACS estimates.
A national percentile can hide a lot of local variation: narrowed to Washington alone, Mountlake Terrace ranks #95 of 156 Washington cities by lowest crime rate - a different, more locally useful comparison than stacking it against the entire country.
For each metric we count every US city with population 1,000+ and a non-null value, then compute what share of them fall below Mountlake Terrace's value: round(cities-below ÷ total × 100). Safety is inverted (percentile = share of cities with a higher crime rate) so a higher number always means safer. The in-state rank narrows that same crime-rate comparison to only the cities PlainCities tracks in Washington, breaking ties alphabetically. See the methodology page for the full source-to-figure lineage.
79th percentile nationally for median household income · 24th percentile for safety (lower crime rate). Source: Census ACS 2023 / FBI UCR 2023.
Income, affordability, and safety percentile
How Mountlake Terrace's home value compares nationally
Median home value vs. every US city (population 1,000+)
$606,100 11th percentile more affordable than 11% of 15,600 US cities
Each bar is a $25K-wide band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau ACS 5-Year Estimates · 2023
Census ACS S1501, educational attainment
Census ACS S1701, poverty status
Census ACS S2301, share of working-age residents in the labor force
Reflects incidents reported to the FBI's Uniform Crime Reporting program — agency participation is voluntary and reporting completeness varies by jurisdiction and year, so this reflects reporting activity, not a definitive danger score. Not adjusted for tourism, commuter, or daytime population.
Annual U.S. Census Bureau Population Estimates Program (PEP) estimates, 2020–2025
Census Bureau Building Permits Survey (BPS) - annual residential permits authorized
| Year | Total |
|---|---|
| 2019 | 30 |
| 2020 | 193 |
| 2021 | 127 |
| 2022 | 35 |
| 2023 | 52 |
| 2024 | 21 |
Permit volume decreased 30% from 2019 to 2024.
How workers travel to work, Census ACS 2023
Based on 11,506 workers 16 and over.
State-average estimates for Washington - EIA 2023 residential energy data
Estimates reflect Washington state averages. Actual costs vary by home size, usage, and local rates. Source: U.S. Energy Information Administration (EIA) 2023.
Cost of living is a Washington state average from BEA; rent and hazard risk are county-level figures from HUD and FEMA for the county Mountlake Terrace sits in
Population-matched peers from other states, closest to Mountlake Terrace's 21,419 residents (Census ACS 5-Year 2023).
Median-household-income-matched peers from other states, closest to Mountlake Terrace's $101,404 (Census ACS 5-Year 2023, table B19013).
City-level race and ethnicity, Census ACS 5-year 2023 (tables B02001, B03001), OMB Directive 15 categories.
Population + median household income, sourced from Census Bureau ACS 5-year B01001 (population) and B19013 (median household income).
| City | Population | Median Household Income |
|---|---|---|
| Mountlake Terrace (this city) | 21,419 | $101,404 |
| Five Corners | 21,444 | $102,423 |
| Tukwila | 21,479 | $80,534 |
| Mukilteo | 21,312 | $122,612 |
21,419 people live in Mountlake Terrace, WA according to U.S. Census Bureau ACS 2023 estimates.
In Mountlake Terrace, the typical household earns $101,404 per year, based on Census ACS 2023 data.
BEA does not publish a city-level cost-of-living figure for Mountlake Terrace; the closest available measure is the Washington state average, a cost of living index of 107.0 (U.S. average = 100), rated "Above Average" based on BEA Regional Price Parities 2024 data. Costs within Washington vary by metro area.
Mountlake Terrace has a total crime rate of 2384.8 per 100,000 residents, which is near the national average. This reflects incidents reported to the FBI UCR program, not a definitive safety score -- agency reporting is voluntary and completeness varies by jurisdiction.
Homes in Mountlake Terrace carry a median value of $606,100, according to Census ACS 2023 estimates.
Source: U.S. Census Bureau ACS 5-Year 2023, FBI UCR, NCES CCD, Census BPS 2024, Census ACS B08301/B08136, U.S. Energy Information Administration (EIA) 2023, BEA Regional Price Parities 2024, HUD Fair Market Rents 2026, FEMA National Risk Index.
Read our methodology - how this data is sourced, computed, and verified.
Primary sources: Census ACS, FBI UCR, NOAA Climate Normals, NCES.
Every figure on PlainCities is rendered directly from Census ACS source data, no number is typed in by an editor. This page draws directly on Census ACS source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.