Maple Valley vs Mercer Island

A side-by-side comparison of Maple Valley and Mercer Island: population, income, housing, and more.

Maple Valley and Mercer Island are places in Washington. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Maple Valley has the higher population (28,121 vs 25,282 in Mercer Island). Mercer Island has the higher median household income ($202,359 vs $147,546 in Maple Valley). Mercer Island has the higher median home value ($1,884,200 vs $672,000 in Maple Valley).

Population, income & housing

	Maple Valley	Mercer Island
Population	28,121	25,282
Median age	36.5 yrs	45.8 yrs
Median household income	$147,546	$202,359
Median home value	$672,000	$1,884,200
Median gross rent	$2,189	$2,464
Housing units	9,553	10,454
Homeownership rate	84.4%	66.0%
Bachelor's degree or higher	47.5%	78.8%
Unemployment rate	4.8%	2.5%

Trends (ACS 5-year, 2019–2023)

	Maple Valley	Mercer Island
Population	26,352 → 28,121 (+6.7%)	25,675 → 25,282 (-1.5%)
Median household income	$114,159 → $147,546 (+29.2%)	$147,566 → $202,359 (+37.1%)
Median home value	$414,400 → $672,000 (+62.2%)	$1,218,200 → $1,884,200 (+54.7%)
Median gross rent	$2,003 → $2,189 (+9.3%)	$2,162 → $2,464 (+14.0%)

Maple Valley

Population

26,35228,121

Median household income

$114,159$147,546

Median home value

$414,400$672,000

Median gross rent

$2,003$2,189

Mercer Island

Population

25,67525,282

Median household income

$147,566$202,359

Median home value

$1,218,200$1,884,200

Median gross rent

$2,162$2,464

Age & race/ethnicity

Age distribution (share)

	Maple Valley	Mercer Island
Under 5	6.6%	3.9%
5 to 17	25.1%	18.2%
18 to 24	6.1%	6.0%
25 to 34	9.6%	8.3%
35 to 44	18.6%	12.1%
45 to 54	15.0%	16.8%
55 to 64	10.1%	13.7%
65 to 74	5.1%	9.9%
75 and over	4.0%	11.1%

Race & ethnicity (share)

	Maple Valley	Mercer Island
White (non-Hispanic)	70.7%	65.3%
Black or African American	1.9%	1.4%
American Indian & Alaska Native	0.3%	0.0%
Asian	12.4%	22.2%
Native Hawaiian & Pacific Islander	0.2%	0.0%
Some other race	0.7%	0.6%
Two or more races	8.0%	8.2%
Hispanic or Latino	5.8%	2.3%

Educational attainment (age 25+)

Share of adults 25+

	Maple Valley	Mercer Island
No high school diploma	3.3%	1.9%
High school graduate	18.4%	5.3%
Some college or associate's	30.8%	14.0%
Bachelor's degree	29.7%	38.3%
Graduate or professional degree	17.8%	40.5%

Commute to work

How workers get to work (share)

	Maple Valley	Mercer Island
Drove alone	72.1%	51.6%
Carpooled	4.8%	4.6%
Public transit	1.7%	4.6%
Walked	0.5%	1.6%
Bicycle	0.3%	0.2%
Worked from home	19.9%	35.7%
Other means	0.7%	1.7%

Housing

Units in structure (share)

	Maple Valley	Mercer Island
1-unit, detached	85.1%	65.6%
1-unit, attached	4.7%	0.4%
2 to 4 units	2.2%	1.0%
5 to 19 units	5.4%	8.0%
20 or more units	2.0%	24.2%
Mobile home & other	0.5%	0.8%

Poverty & households

	Maple Valley	Mercer Island
Poverty rate	5.1%	4.6%
Average household size	3.02	2.54
Mean commute (minutes)	38	25
Median year structure built	2000	1973