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The total population of Mercer Island is estimated to be 25,464 with 12,008 males (47.16%) and 13,456 females (52.84%). There are 1,448 more females than males in Mercer Island.
The median household income in Mercer Island was $183,755 in 2021, which marked an an increase of 13,210(7.75%) from $170,545 in 2020. This income is 246.30% 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, Mercer Island sees its highest median household income among householders in the age group of 45 to 64 years old, at $258,068. Overall, the median household income for the city of Mercer Island stands at $183,755.
In Mercer Island, the median income for all workers aged 15 years and older, regardless of work hours, was $121,222 for males and $58,210 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $189,027 for males and $121,968 for females.
In Mercer Island, the demographic landscape is diverse, spanning 5 distinct racial categories among households. Among these, Two or More Races households have the highest median household income at $232,847, while Some Other Race households represent the opposite end with the lowest median household income of $68,297.
In 2022, the population of Mercer Island was 25,172, a 1.26% decrease year-by-year from 2021. Previously, in 2021, Mercer Island's population was 25,492, a decline of 0.98% compared to a population of 25,744 in 2020.
The median age in Mercer Island, WA is 45.5, as per 2021 ACS 5-Year Estimates. Of the total population, 19.24% were under the age of 15, 14.35% aged 15 to 29, 46.63% aged 30 to 64, 15.94% aged 65 to 84, and 3.83% were 85 years of age and older.
Racial distribution of Mercer Island population: 68.29% are White, 0.91% are Black or African American, 0.07% are American Indian and Alaska Native, 21.53% are Asian, 0.11% are Native Hawaiian and other Pacific Islander, 1.47% are some other race and 7.63% are multiracial.