Mill Creek, WA Demographics

The total population of Mill Creek is estimated to be 20,797 with 9,828 males (47.26%) and 10,969 females (52.74%). There are 1,141 more females than males in Mill Creek.
The median household income in Mill Creek was $121,140 in 2021, which marked an an increase of 2,216(1.86%) from $118,924 in 2020. This income is 162.37% of the U.S. median household income of $74,606 (all incomes in 2022 inflation-adjusted dollars).
Per the latest American Community Survey by the Census Bureau, Mill Creek sees its highest median household income among householders in the age group of 45 to 64 years old, at $149,778. Overall, the median household income for the city of Mill Creek stands at $121,140.
In Mill Creek, the median income for all workers aged 15 years and older, regardless of work hours, was $89,240 for males and $42,023 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $111,523 for males and $74,922 for females.
In Mill Creek, the demographic landscape is diverse, spanning 5 distinct racial categories among households. Among these, Asian households have the highest median household income at $176,799, while Black or African American households represent the opposite end with the lowest median household income of $83,191.
In 2022, the population of Mill Creek was 20,828, a 0.67% decrease year-by-year from 2021. Previously, in 2021, Mill Creek's population was 20,968, an increase of 0.31% compared to a population of 20,903 in 2020.
The median age in Mill Creek, WA is 39.6, as per 2021 ACS 5-Year Estimates. Of the total population, 18.23% were under the age of 15, 18.33% aged 15 to 29, 47.80% aged 30 to 64, 13.64% aged 65 to 84, and 2.00% were 85 years of age and older.
Racial distribution of Mill Creek population: 63.76% are White, 4.45% are Black or African American, 0.38% are American Indian and Alaska Native, 20% are Asian, 0.84% are Native Hawaiian and other Pacific Islander, 2.82% are some other race and 7.75% are multiracial.