City

Mercer Island, WA

1 ZIP code  ·  King County  ·  Washington

👥25,282Population
💰$202,359Median HH Income▲ 165% above avg
🎂45.8Median Age
🏠$1,884,200Median Home Value▲ 576% above avg
🎓84.1%College Grads▲ 117% above avg
📊2.5%Unemployment▼ 50% below avg
People & Population (ACS 2023 — weighted avg)
♂ Male 46.5% Female 53.6% ♀

Race & Ethnicity

White: 65.3%Hispanic: 2.3%Black: 1.4%Asian: 22.2%Other: 8.2%Race
White65.3%
Hispanic2.3%
Black1.4%
Asian22.2%
Other8.2%

Age Breakdown

Under 5
4%
5–17
18%
18–24
6%
25–44
20%
45–64
30%
65+
7%

Key Indicators

Median Age45.8 yrs
Avg HH Size2.54
Below Poverty4.6% ▼ 54% below avg
College Grads84.1% ▲ 117% above avg
Unemployment2.5% ▼ 50% below avg
No HS Diploma118 (0.7%)
HS Graduate920 (5.5%)
Some College322 (1.9%)
Associates1,287 (7.7%)
Bachelors1,017 (6.1%)
Graduate Degree12,971 (78%)

Education

No HS: 0.7%HS Grad: 5.5%Some College: 1.9%Associates: 7.7%Bachelors: 6.1%Graduate: 78%Edu
No HS0.7%
HS Grad5.5%
Some College1.9%
Associates7.7%
Bachelors6.1%
Graduate78.0%
Housing & Income

Housing Tenure

Owner: 66%Renter: 34%Tenure
Owner66.0%
Renter34.0%

Home Value Distribution

Under $50k
2%
$100k–$150k
2%
$150k–$200k
0%
$200k–$300k
1%
$300k–$500k
6%
Over $500k
88%

Financials

Median HH Income$202,359 ▲ 165% above avg
Median Home Value$1,884,200 ▲ 576% above avg
Home/Income Ratio9.3x (nat avg ~3.5x)
Median Rent$2,464/mo
Total Housing Units10,454
Vacant Units561

Income Distribution

Under $25k
6%
$25k–$50k
7%
$50k–$75k
8%
$75k–$100k
6%
$100k–$150k
13%
$150k–$200k
9%
Over $200k
52%
Employment & Commute

How People Get to Work

Drove Alone
55%
Public Transit
5%
Walked
2%
Work From Home
38%

Commute Time

Under 15 min
21%
15–30 min
42%
30–45 min
27%
Over 45 min
11%
Housing Stock

Year Built

Before 1940
2%
1940s–1950s
20%
1960s–1970s
16%
1980s–1990s
8%
2000+
54%
About Mercer Island, WA

Mercer Island is a city in Washington, located in King County. The city spans 1 ZIP code and is home to approximately 25,282 residents. It is a mature city, with a median age of 45.8 years.

Economically, Mercer Island is a affluent community. The median household income of $202,359 is more than double the national average. Approximately 4.6% of residents live below the poverty line. The unemployment rate is 2.5%, below the national average.

The real estate market in Mercer Island is among the most expensive housing markets in the country. Median home values stand at $1,884,200, which is more than double the national average. Renters typically pay around $2,464 per month. Homeownership is high at 66.0%, typical of suburban and family-oriented communities.

The population of Mercer Island is highly educated. 84.1% of adults hold a bachelor's degree or higher — more than double the national average. The community is majority White (65.28%).

Mercer Island, WA offers residents above-average earning potential within Washington.

ZIP Codes in Mercer Island
ZIPPopulationMedian IncomeMedian HomeMedian RentUnemp.CollegeOwner Occ.
98040 25,282 $202,359 $1,884,200 $2,464 2.5% 84.1% 66.0%