ZIP Code 98040, Washington
ZIP Code 98040 profile, demographic data, and geographic information.
ZCTA5 98040 is a 5-digit ZIP Code area located in King County, Washington. As of official census estimates, it has a reported population of 25,307. The land area covers 6.38 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 25,307 | ±32 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 46.4 yrs | ±1.8 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 10,068 | ±331 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 10,609 | ±346 |
| Occupied Housing Units | 10,068 | ±331 |
| Vacant Housing Units | 541 | ±197 |
| Median Home Value | $2,000,000+ | — |
| Median Gross Rent | $2,502 | ±$191 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $219,069 | ±$17,476 |
| Per Capita Income | $128,615 | ±$8,745 |
| Poverty Rate | 3.8% | ±0.9% |
| Population Below Poverty Level | 957 | ±226 |
| Unemployment Rate | 3% | ±1.2% |
| Civilian Labor Force, Employed | 12,219 | ±536 |
| Broadband Internet Rate | 94.5% | ±1.4% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 2,340,211 (2024)
ID: 209716
|
County | Official County Government |
Contact: DEMOGRAPHER
401 5TH AVE, STE 800, SEATTLE WA 98104-2391
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | KG-05 | SEATTLE, WA | |
| Regular School Nearby | 06-08 | Seattle, WA | |
| Alternative School Nearby | 09-12 | SEATTLE, WA | |
| Regular School Nearby | KG-05 | Redmond, WA | |
| Regular School Nearby | 06-08 | Shoreline, WA | |
| Regular School Nearby | PK-05 | Kirkland, WA | |
| Regular School Nearby | PK-05 | SEATTLE, WA | |
| Regular School Nearby | PK-05 | RENTON, WA | |
| Regular School Nearby | PK-05 | SEATTLE, WA | |
| Regular School Nearby | PK-05 | Bellevue, WA |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Bellevue College
|
College | 4.0 mi away | 3000 Landerholm Cir SE, Bellevue, WA, 98007-6484 |
4255641000
|
|
MERCER ISLAND LIBRARY
|
Library | 0.5 mi away | 4400 88TH AVENUE SE, MERCER ISLAND, WA, 98040 |
(206) 236-3537
|
|
Seattle Institute of East Asian Medicine
|
College | 4.6 mi away | 6363 7th Ave S, Seattle, WA, 98108 |
2065174541
|
|
COLUMBIA BRANCH LIBRARY
|
Library | 2.6 mi away | 4721 RAINIER AVE S, SEATTLE, WA, 98118 |
(206) 386-1908
|
|
Seattle University
|
College | 5.1 mi away | 900 Broadway, Seattle, WA, 98122-4340 |
2062966000
|
|
NEWHOLLY BRANCH LIBRARY
|
Library | 3.3 mi away | 7058 32ND AVE S, SEATTLE, WA, 98118 |
(206) 386-1905
|
|
Aveda Arts & Sciences Institute Seattle
|
College Vocational | 5.5 mi away | 802 East Pike Street, Seattle, WA, 98122 |
2063021049
|
|
RAINIER BEACH BRANCH LIBRARY
|
Library | 3.5 mi away | 9125 RAINIER AVE S, SEATTLE, WA, 98118 |
(206) 386-1906
|
|
Seattle Central College
|
College | 5.6 mi away | 1701 Broadway Avenue, Seattle, WA, 98122 |
2069343800
|
|
NEWCASTLE LIBRARY
|
Library | 3.5 mi away | 12901 NEWCASTLE WAY, NEWCASTLE, WA, 98056 |
(425) 255-0111
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at SEATTLE BOEING FLD, WA US, located 4.0 miles from ZCTA5 98040. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 48.6° | 36.8° | 42.7° | 5.21" | — |
| February | 50.7° | 36.8° | 43.7° | 3.71" | — |
| March | 54.8° | 39.4° | 47.1° | 3.94" | — |
| April | 59.8° | 43.6° | 51.7° | 2.89" | — |
| May | 66.5° | 49.3° | 57.9° | 1.98" | — |
| June | 71.2° | 54.0° | 62.6° | 1.22" | — |
| July | 77.3° | 57.5° | 67.4° | 0.56" | — |
| August | 77.4° | 58.1° | 67.8° | 0.83" | — |
| September | 71.7° | 53.9° | 62.8° | 1.37" | — |
| October | 61.0° | 46.4° | 53.7° | 3.49" | — |
| November | 53.0° | 39.9° | 46.4° | 5.80" | — |
| December | 47.8° | 36.2° | 42.0° | 5.49" | — |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Mercer Island city | City | 0.0 mi | — |
| Beaux Arts Village town | Town | 2.0 mi | — |
| Newcastle city | City | 3.6 mi | — |
| Bellevue city | City | 4.1 mi | — |
| Medina city | City | 4.3 mi | — |
| Clyde Hill city | City | 4.6 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 98040. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.