98040 ZIP Code
Mercer Island, Washington
December 30, 2025
| ZIP Code: | 98040 |
| City/Town: | Mercer Island |
| County: | King |
| State: | Washington |
| ZIP Type: | Standard |
| Population: | 25,464 |
| Median Household Income: | $190,985 |
| Per Capita Income: | $93,993 |
| Total Housing Units: | 10,514 |
| Median Home Value: | $1,683,600 |
| Land Area: | 6.4 sq miles
16.5 sq km |
| Water Area: | 6.5 sq miles
16.9 sq km |
| Coordinates: | 47.5640, -122.2312 |
Population Information (98040 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total Population: | 25,464 | -- | -- |
| Male: | 12,008 | 47.2% | 49.6% |
| Female: | 13,456 | 52.8% | 50.4% |
| Median Age: | 45.3 yrs | -- | 38.5 yrs |
| Under 5 years: | 1,030 | 4.0% | 5.7% |
| 5 to 9 years: | 1,663 | 6.5% | 6.0% |
| 10 to 14 years: | 1,933 | 7.6% | 6.5% |
| 15 to 19 years: | 1,906 | 7.5% | 6.6% |
| 20 to 24 years: | 803 | 3.2% | 6.7% |
| 25 to 34 years: | 2,118 | 8.3% | 13.7% |
| 35 to 44 years: | 3,117 | 12.2% | 12.9% |
| 45 to 54 years: | 4,316 | 16.9% | 12.4% |
| 55 to 59 years: | 1,832 | 7.2% | 6.5% |
| 60 to 64 years: | 1,541 | 6.1% | 6.4% |
| 65 to 74 years: | 2,602 | 10.2% | 9.7% |
| 75 to 84 years: | 1,550 | 6.1% | 4.8% |
| 85 years and over: | 1,053 | 4.1% | 2.0% |
Housing Information (98040 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Median home value: | $1,683,600 | -- | $281,900 |
| Median rooms: | 6.8 | -- | 5.5 |
| Median rent: | $2,315 / mo. | -- | $1,268 / mo. |
| Total housing units: | 10,514 | -- | -- |
| Occupied housing units: | 9,782 | 93.0% | 38.0% |
| Vacant housing units: | 732 | 7.0% | 4.6% |
| Housing tenure: | -- | -- | -- |
| Owner-occupied: | 6,649 | 68.0% | 64.8% |
| Renter-occupied: | 3,133 | 32.0% | 35.2% |
Educational Attainment (98040 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Population 25 years and over: | 18,129 | -- | -- |
| Less than 9th grade: | 276 | 1.5% | 4.7% |
| 9th to 12th grade, no diploma: | 125 | 0.7% | 6.1% |
| High school graduate: | 1,027 | 5.7% | 26.4% |
| Some college, no degree: | 1,601 | 8.8% | 19.7% |
| Associate degree: | 1,006 | 5.5% | 8.7% |
| Bachelor's degree: | 6,922 | 38.2% | 20.9% |
| Graduate or professional degree: | 7,172 | 39.6% | 13.7% |
| Percent high school graduate or higher: | -- | 97.8% | 89.1% |
| Percent bachelor's degree or higher: | -- | 77.7% | 34.3% |
Income Information (98040 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median household income: | $190,985 / yr. | $75,149 / yr. |
| Mean household income: | $290,655 / yr. | $105,833 / yr. |
| Median family income: | $250,001 / yr. | $92,646 / yr. |
| Per capita income: | $93,993 / yr. | $41,261 / yr. |
Employment (98040 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| In labor force: | 12,205 | -- | 63.5% |
| Employed: | 11,891 | 97.4% | 96.4% |
| Unemployed: | 314 | 2.6% | 5.3% |
| Not in labor force: | 8,328 | -- | -- |
| Class of Worker: | -- | -- | -- |
| Private wage and salary: | 9,577 | 80.5% | 79.7% |
| Government workers: | 1,158 | 9.7% | 14.2% |
| Self-employed: | 1,135 | 9.5% | 5.9% |
| Unpaid family workers: | 21 | 0.2% | 0.1% |
Race & Ethnicity (98040 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Race (one race): | -- | -- | -- |
| White: | 16,882 | 66.3% | 61.6% |
| Black or African American: | 340 | 1.3% | 12.4% |
| American Indian/Alaska Native: | 24 | 0.1% | 1.1% |
| Asian: | 5,658 | 22.2% | 6.0% |
| Native Hawaiian/Pacific Islander: | 0 | 0.0% | 0.2% |
| Some other race: | 296 | 1.2% | 8.4% |
| Two or more races: | 2,264 | 8.9% | 10.2% |
| Hispanic or Latino (any race): | 778 | 3.1% | 18.7% |
| Mexican: | 826 | 3.2% | 11.2% |
| Puerto Rican: | 420 | 1.6% | 1.8% |
| Cuban: | 58 | 0.2% | 0.7% |
| Other Hispanic or Latino: | 6 | 0.0% | 5.0% |
| Not Hispanic or Latino: | 342 | 1.3% | 81.1% |
Income Distribution (98040 zip code)
| Household Income | Households | Percent% | US AvgUS |
|---|---|---|---|
| Less than $10,000: | 282 | 2.9% | 4.9% |
| $10,000 to $14,999: | 61 | 0.6% | 3.8% |
| $15,000 to $24,999: | 280 | 2.9% | 7.0% |
| $25,000 to $34,999: | 510 | 5.2% | 7.4% |
| $35,000 to $49,999: | 445 | 4.5% | 10.7% |
| $50,000 to $74,999: | 883 | 9.0% | 16.1% |
| $75,000 to $99,999: | 544 | 5.6% | 12.8% |
| $100,000 to $149,999: | 1,204 | 12.3% | 17.1% |
| $150,000 to $199,999: | 853 | 8.7% | 8.8% |
| $200,000 or more: | 4,720 | 48.3% | 11.4% |
Commute to Work (98040 zip code)
| Commute Method | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Drove alone: | 6,091 | 51.2% | 67.8% |
| Carpooled: | 750 | 6.3% | 8.7% |
| Public transportation: | 839 | 7.1% | 4.2% |
| Walked: | 236 | 2.0% | 2.5% |
| Other means: | 200 | 1.7% | 0.9% |
| Worked from home: | 3,534 | 29.7% | 13.8% |
| Mean travel time to work: | 27.0 min | -- | 26.7 min |
Industry (98040 zip code)
| Industry Sector | Workers | Percent% | US AvgUS |
|---|---|---|---|
| Agriculture, forestry, fishing, mining: | 0 | 0.0% | 1.6% |
| Construction: | 277 | 2.3% | 6.9% |
| Manufacturing: | 624 | 5.2% | 10.0% |
| Wholesale trade: | 352 | 3.0% | 2.4% |
| Retail trade: | 1,198 | 10.1% | 11.0% |
| Transportation, warehousing, utilities: | 365 | 3.1% | 5.8% |
| Information: | 669 | 5.6% | 1.9% |
| Finance, insurance, real estate: | 1,274 | 10.7% | 6.7% |
| Professional, scientific, management: | 3,191 | 26.8% | 12.1% |
| Education, health care, social services: | 2,477 | 20.8% | 23.3% |
| Arts, entertainment, food services: | 750 | 6.3% | 9.0% |
| Other services: | 456 | 3.8% | 4.7% |
| Public administration: | 258 | 2.2% | 4.7% |
Poverty Status (98040 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Poverty Rate: | -- | 5.3% | 8.8% |
| All people below poverty level: | -- | -- | -- |
| Under 18 years: | -- | -- | 16.3% |
| 18 to 64 years: | -- | -- | 11.0% |
| 65 years and over: | -- | -- | 10.3% |
Health Insurance (98040 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| With health insurance: | 24,824 | 97.5% | 91.3% |
| Private health insurance: | 22,266 | 87.4% | 67.6% |
| Public health coverage: | 6,028 | 23.7% | 35.9% |
| Without health insurance: | 533 | 2.1% | 8.7% |
Benefits & Assistance (98040 zip code)
| Households with: | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Earnings: | 7,760 | 79.3% | 77.4% |
| Social Security income: | 2,724 | 27.8% | 31.0% |
| Retirement income: | 2,399 | 24.5% | 21.8% |
| Supplemental Security Income (SSI): | 215 | 2.2% | 4.5% |
| Cash public assistance income: | 165 | 1.7% | 1.8% |
| SNAP (food stamps) benefits: | 178 | 1.8% | 11.4% |
Housing Types (98040 zip code)
| Structure Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| 1-unit, detached: | 6,914 | 65.8% | 61.4% |
| 1-unit, attached: | 66 | 0.6% | 6.1% |
| 2 units: | 25 | 0.2% | 3.4% |
| 3 or 4 units: | 84 | 0.8% | 4.3% |
| 5 to 9 units: | 496 | 4.7% | 4.6% |
| 10 to 19 units: | 400 | 3.8% | 4.3% |
| 20 or more units: | 2,474 | 23.5% | 9.9% |
| Mobile home: | 55 | 0.5% | 5.8% |
| Boat, RV, van, etc.: | 0 | 0.0% | 0.1% |
Year Structure Built (98040 zip code)
| Year Built | Units | Percent% | US AvgUS |
|---|---|---|---|
| Built 2020 or later: | 52 | 0.5% | 0.6% |
| Built 2010 to 2019: | 898 | 8.5% | 8.2% |
| Built 2000 to 2009: | 1,229 | 11.7% | 13.5% |
| Built 1990 to 1999: | 834 | 7.9% | 13.2% |
| Built 1980 to 1989: | 1,042 | 9.9% | 13.2% |
| Built 1970 to 1979: | 1,874 | 17.8% | 14.6% |
| Built 1960 to 1969: | 2,316 | 22.0% | 10.2% |
| Built 1950 to 1959: | 1,234 | 11.7% | 9.9% |
| Built 1940 to 1949: | 695 | 6.6% | 4.6% |
| Built 1939 or earlier: | 340 | 3.2% | 12.0% |
Bedrooms (98040 zip code)
| Number of Bedrooms | Units | Percent% | US AvgUS |
|---|---|---|---|
| No bedroom (studio): | 507 | 4.8% | 2.4% |
| 1 bedroom: | 1,253 | 11.9% | 3.0% |
| 2 bedrooms: | 2,017 | 19.2% | 9.1% |
| 3 bedrooms: | 2,007 | 19.1% | 15.9% |
| 4 bedrooms: | 3,045 | 29.0% | 18.8% |
| 5 or more bedrooms: | 1,685 | 16.0% | 17.6% |
Heating Fuel (98040 zip code)
| Fuel Type | Units | Percent% | US AvgUS |
|---|---|---|---|
| Utility gas: | 5,869 | 60.0% | 47.1% |
| Bottled, tank, or LP gas: | 122 | 1.2% | 4.9% |
| Electricity: | 3,549 | 36.3% | 40.2% |
| Fuel oil, kerosene, etc.: | 121 | 1.2% | 4.2% |
| Coal or coke: | 0 | 0.0% | 0.1% |
| Wood: | 18 | 0.2% | 1.5% |
| Solar energy: | 11 | 0.1% | 0.1% |
| Other fuel: | 28 | 0.3% | 0.5% |
| No fuel used: | 64 | 0.7% | 0.2% |
Vehicles Available (98040 zip code)
| Vehicles | Households | Percent% | US AvgUS |
|---|---|---|---|
| No vehicle available: | 597 | 6.1% | 8.3% |
| 1 vehicle available: | 2,789 | 28.5% | 32.6% |
| 2 vehicles available: | 4,029 | 41.2% | 37.0% |
| 3 or more vehicles available: | 2,367 | 24.2% | 22.1% |
Home Value Distribution (98040 zip code)
| Value Range | Owner Units | Percent% | US AvgUS |
|---|---|---|---|
| Less than $50,000: | 49 | 0.7% | 5.7% |
| $50,000 to $99,999: | 0 | 0.0% | 7.8% |
| $100,000 to $149,999: | 70 | 1.1% | 9.2% |
| $150,000 to $199,999: | 9 | 0.1% | 10.8% |
| $200,000 to $299,999: | 54 | 0.8% | 19.9% |
| $300,000 to $499,999: | 297 | 4.5% | 24.1% |
| $500,000 to $999,999: | 527 | 7.9% | 17.0% |
| $1,000,000 or more: | 5,643 | 84.9% | 5.6% |
Housing Costs (98040 zip code)
| Value | US AvgUS | |
|---|---|---|
| Median owner costs (with mortgage): | $4,001 / mo. | $1,828 / mo. |
| Median owner costs (no mortgage): | $1,501 / mo. | $584 / mo. |
| Median gross rent: | $2,315 / mo. | $1,268 / mo. |
| Average household size (owner-occupied): | 2.88 | 2.53 |
| Average household size (renter-occupied): | 1.97 | 2.38 |
Households (98040 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Total households: | 9,782 | -- | -- |
| Married-couple households: | 6,298 | 64.4% | 47.5% |
| Cohabiting couple households: | 2,890 | 29.5% | 7.0% |
| Male householder, no spouse: | 965 | 9.9% | 5.4% |
| Female householder, no spouse: | 2,130 | 21.8% | 12.7% |
| Householder living alone: | 3,339 | 34.1% | 28.6% |
| 65 years and over living alone: | 3,413 | 34.9% | 11.8% |
| Average household size: | 2.59 | -- | 2.53 |
| Average family size: | 3.10 | -- | -- |
Marital Status (98040 zip code)
| Population 15 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 9,819 | -- | -- |
| Never married: | 2,308 | 23.5% | 37.0% |
| Now married: | 6,743 | 68.7% | 49.5% |
| Separated: | 235 | 2.4% | 1.5% |
| Widowed: | 495 | 5.0% | 2.6% |
| Divorced: | 2,311 | 23.5% | 9.3% |
School Enrollment (98040 zip code)
| Population 3 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Enrolled in school: | 6,881 | -- | -- |
| Nursery school, preschool: | 532 | 7.7% | 5.8% |
| Kindergarten: | 206 | 3.0% | 5.0% |
| Elementary school (grades 1-8): | 2,914 | 42.3% | 40.5% |
| High school (grades 9-12): | 2,022 | 29.4% | 21.4% |
| College or graduate school: | 1,207 | 17.5% | 27.3% |
Veterans & Disability (98040 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Civilian population 18 years and over: | 19,582 | -- | -- |
| Veterans: | 856 | 4.4% | 6.3% |
| Civilian noninstitutionalized population: | 25,357 | -- | -- |
| With a disability: | 2,492 | 9.8% | 13.4% |
| Under 18 with disability: | 302 | 12.1% | 5.8% |
| 18 to 64 with disability: | 669 | 26.8% | 10.4% |
| 65 and over with disability: | 1,521 | 61.0% | 33.4% |
Mobility (Residence 1 Year Ago) (98040 zip code)
| Population 1 year and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Same house: | 21,567 | 84.7% | 86.9% |
| Different house: | 3,780 | 14.8% | 13.1% |
| Same county: | 2,227 | 58.9% | 7.0% |
| Different county: | 1,339 | 35.4% | 3.2% |
| Different state: | 1,133 | 30.0% | 2.5% |
| Abroad: | 214 | 5.7% | 0.4% |
Place of Birth (98040 zip code)
| Number# | Percent% | US AvgUS | |
|---|---|---|---|
| Native born: | 19,207 | 75.4% | 86.2% |
| Foreign born: | 583 | 2.3% | 13.9% |
| Naturalized citizen: | 6,257 | 1073.2% | 52.7% |
| Not a citizen: | 6,257 | 1073.2% | 47.3% |
| Foreign-born by region: | -- | -- | -- |
| Europe: | 6,257 | 1073.2% | 10.5% |
| Asia: | 1,274 | 218.5% | 31.3% |
| Africa: | 93 | 16.0% | 5.5% |
| Oceania: | 95 | 16.3% | 0.5% |
| Latin America: | 505 | 86.6% | 50.0% |
| Northern America: | 352 | 60.4% | 2.2% |
Language Spoken at Home (98040 zip code)
| Population 5 years and over | Number# | Percent% | US AvgUS |
|---|---|---|---|
| Total: | 24,434 | -- | -- |
| English only: | 18,578 | 76.0% | 78.3% |
| Language other than English: | 5,856 | 24.0% | 21.5% |
| By language: | -- | -- | -- |
| Spanish: | 585 | 2.4% | 13.3% |
| Other Indo-European languages: | 1,768 | 7.2% | 3.5% |
| Asian/Pacific Island languages: | 3,389 | 13.9% | 3.5% |
| Other languages: | 114 | 0.5% | 1.0% |
Computers & Internet (98040 zip code)
| Households | Percent% | US AvgUS | |
|---|---|---|---|
| Households with a computer: | 9,782 | 100.0% | 93.1% |
| Households with broadband internet: | 9,515 | 97.3% | 89.4% |
Mercer Island, WA98040