City in Snohomish County, Washington · 6.2 sq mi · 3,388 people per sq mi
21,172 people live in Mukilteo. The typical household earns $132,861, and the median resident is 42.8 years old.
2026 projection
From 21,538 in 2020
Poverty rate 5.66%
Men 40.3 · Women 45.9
1950–2026
21,172
2026 projection
1.7% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1950–2026
21,172
2026 projection
1.7% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 21,172 | -67 | 0.32% |
|---|---|---|---|
| 2025 | 21,239 | -3 | 0.01% |
| 2024 | 21,242 | +61 | 0.29% |
| 2023 | 21,181 | -44 | 0.21% |
| 2022 | 21,225 | -204 | 0.95% |
| 2021 | 21,429 | -109 | 0.51% |
| 2020 | 21,538 | -41 | 0.19% |
| 2019 | 21,579 | -42 | 0.19% |
| 2018 | 21,621 | +40 | 0.19% |
| 2017 | 21,581 | +156 | 0.73% |
Showing 10 of 23 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Mukilteo has a population change lower than Snohomish County, Washington, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 213 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 18 residents
57% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 57% | 60% | 55% |
| Never married | 26% | 31% | 21% |
| Divorced | 11% | 6% | 16% |
| Widowed | 4% | 3% | 5% |
| Separated | 2% | <1% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources