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Data on this report is based on areas within the legal city boundary, outlined in black on the map. Any additional neighborhoods shown on the map are associated with the city by name and are included for reference only.

Mercer Island, WA
Real Estate & Demographic Data






Mercer Island profile


Living in Mercer Island



Mercer Island is a medium-sized city located in the state of Washington. With a population of 25,172 people and six constituent neighborhoods, Mercer Island is the 45th largest community in Washington.

Mercer Island home prices are not only among the most expensive in Washington, but Mercer Island real estate also consistently ranks among the most expensive in America.

Also of interest is that Mercer Island has more people living here who work in computers and math than 95% of the places in the US.

Of important note, Mercer Island is also a city of artists. Mercer Island has more artists, designers and people working in media than 90% of the communities in America. This concentration of artists helps shape Mercer Island’s character.

Telecommuters are a relatively large percentage of the workforce: 25.36% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

For the size of the city, public transportation in Mercer Island is quite heavily used. Mostly, people who use it for their daily commute are taking the bus. For Mercer Island, the benefits are reduced air pollution and congestion on the highways.

Do you like to read, write and learn? If you move to Mercer Island, you'll likely find that many of your neighbors like to as well. Mercer Island is one of the more educated communities in America, with a full 77.52% of its adults having a college degree or even advanced degree, compared to a national average across all communities of 21.84%.

The per capita income in Mercer Island in 2018 was $101,832, which is wealthy relative to Washington and the nation. This equates to an annual income of $407,328 for a family of four.

Mercer Island is an extremely ethnically-diverse city. The people who call Mercer Island home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Mercer Island residents report their race to be White, followed by Asian. Important ancestries of people in Mercer Island include English, German, Irish, Norwegian, and European.

Foreign born people are also an important part of Mercer Island's cultural character, accounting for 23.77% of the city’s population.

The most common language spoken in Mercer Island is English. Other important languages spoken here include Chinese and Spanish.