City in Snohomish County, Washington · 4.6 sq mi · 4,502 people per sq mi
About 21,000 people live in Mill Creek. The typical household earns $124,364, and the median resident is 39.3 years old.
2026 projection
From 20,909 in 2020
Poverty rate 6.42%
Men 38.3 · Women 40
1990–2026
20,907
2026 projection
0% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1990–2026
20,907
2026 projection
0% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 20,907 | +5 | 0.02% |
|---|---|---|---|
| 2025 | 20,902 | -30 | 0.14% |
| 2024 | 20,932 | +41 | 0.20% |
| 2023 | 20,891 | -34 | 0.16% |
| 2022 | 20,925 | -98 | 0.47% |
| 2021 | 21,023 | +114 | 0.55% |
| 2020 | 20,909 | +5 | 0.02% |
| 2019 | 20,904 | -97 | 0.46% |
| 2018 | 21,001 | +102 | 0.49% |
| 2017 | 20,899 | +724 | 3.59% |
Showing 10 of 19 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 210 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 16 residents
58% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 58% | 57% | 58% |
| Never married | 28% | 31% | 24% |
| Divorced | 11% | 10% | 11% |
| Widowed | 4% | <1% | 7% |
| Separated | <1% | <1% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau