ZIP Code 98040 - Mercer Island Washington

ZIP Code 98040 is located in Mercer Island Washington. 98040 is entirely within King County. Regionally, it is located in Metro Seattle-Tacoma.

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ZIP Code 98040 Quick Stats

ZIP Code NameMercer Island
Primary CountyKing County
ZIP Code TypeStandard
Population (2022)25,464
Area Code(s)206
Current Time
PDT

ZIP Code 98040 Map

98040 Demographics

98040 can be classified socioeconomically as Upper Middle Class class compared to other ZIP Codes in Washington based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 98040 is White. The majority race/ethnicity attending public schools in 98040 is White. The current unemployment level in 98040 is 3.9%.

Population25,464
Population Growth Rate2.98%
Population Density1,941 People per Square Mile
Total Households9,335
Percentage High Income Households30.7%
Median Houshold Income (2021)$170,000
Average Adjusted Gross Income (2020)$408,220
Current Unemployment Rate (February 2024)3.9%
Majority Race/EthnictyWhite - 72.63%
Public School Majority Race/EthnictyWhite - 57.56%

98040 Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White17,41872.54%
Black2310.96%
Hispanic8253.44%
Asian5,49222.87%
Native American170.07%
Hawaiian/Pac. Islander270.11%

98040 Public School Race/Ethnicty Breakdown

Race/EthnictyTotalPercentage
White2,41365.57%
Black371.01%
Hispanic2266.14%
Asian99727.09%
Native American20.05%
Hawaiian/Pac. Islander50.14%

98040 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College3642.22%
Bachelor Degree6,60740.24%
High School Diploma8215%
No High School Diploma370.23%
GED or Alternate1480.9%
1 or More Years of College1,69110.3%
Associates Degree7284.43%
Masters Degree3,42720.87%
Professional Degree1,96011.94%
Doctorate Degree6363.87%

98040 Geography

Coordinates47.56600952,-122.23207855
Adjacent ZIP Codes
Cities/Towns in 98040
RegionMetro Seattle-Tacoma
Metropolitan/Micropolitan Stat AreaSeattle-Tacoma-Bellevue, WA
Time ZonePacific Daylight Time
IANA TimezoneAmerica/Los_Angeles
Area13 Square Miles

98040 Politics

US Congressional Districts in 98040
Washington State Senate Districts in 98040
Washington State House of Representatives Districts in 98040

98040 Weather and Climate Data

Plant Hardiness ZoneZone 8b: 15F to 20F
Average First Frost DateNovember 11 - 20
Average Last Frost DateMarch 21 - 31
Koppen-Geiger Climate ZoneCsb - Warm-Summer Mediterranean Climate
Ecoregion2f - Central Puget Lowland

98040 Annual Climate Data

JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)35363841475155555144393544
Avg Max Temp (°F)46505459667076767161514661
Avg Precip (In.)5.224.063.92.531.761.54.851.021.683.35.525.7137.1

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