Postal Codes

98038 ZIP Code

Advertisement

English Español

ZIP code 98038 covers Maple Valley, Washington, with a population of about 37,868 and a median household income of $144,733.

Population
37,868575 per square mile
Median age
38.7about the US average
Median household income
$144,7331.5× the Washington median
Poverty rate
5.2%7.2 points below the US average
Typical home value
$784,277up 14.5% in five years
Median rent
$2,1521.3× the Washington median
Degree or higher
46.4%11.4 points above the US average
Homeownership
86.1%21.1 points above the US average
Time zone
Pacific UTC-08:00observes daylight saving time
Businesses
742

Where 98038 is

Maple Valley, Washington — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population37,868
Median age38.7
Family households81.4%
Born outside the US12.9%
Speaks a language other than English at home14.1%
White (non-Hispanic)73.3%
Black (non-Hispanic)1.7%
Asian (non-Hispanic)10.2%
Hispanic or Latino6.3%
Veterans8.5%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$144,733
Income per person$56,421
Poverty rate5.2%
Households on SNAP or cash assistance6.2%

Household income distribution

Under $10k2.7%
$10–15k0.8%
$15–20k1.0%
$20–25k2.5%
$25–30k0.7%
$30–35k1.2%
$35–40k1.5%
$40–45k1.0%
$45–50k2.3%
$50–60k3.5%
$60–75k5.5%
$75–100k9.2%
$100–125k10.4%
$125–150k9.5%
$150–200k19.1%
$200k or more29.2%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed16,630
Mean adjusted gross income$137,860
Returns declaring $200,000 or more20.9%
Returns, under $25k16.3%
Returns, $25k–$50k12.9%
Returns, $50k–$75k11.1%
Returns, $75k–$100k9.7%
Returns, $100k–$200k29.2%
Returns, $200k or more20.9%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$714,100
Median gross rent$2,152
Rent as a share of household income31.1%
Owner-occupied86.1%
Vacant homes2.4%
Median year built1997

What the homes are

Detached house87%
Attached house3.7%
2 to 4 units2.1%
5 to 19 units3.9%
20 or more units1.7%
Mobile home1.6%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$784,277as of 2026-07
Typical home value, 1 yeardown 2.4%
Typical home value, 5 yearsup 14.5%
Typical home value, 10 yearsup 89.2%
Typical asking rent$3,056as of 2026-07
Typical asking rent, 1 yearup 2.8%
Typical asking rent, 5 yearsup 22%
Typical home value since 2000
200020132026$843,054$252,396

$252,396 in 2000 to $784,277 in 2026.

Typical asking rent
201920222026$3,056$2,211

$2,237 in 2019 to $3,056 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate4.3%
Bachelor's degree or higher46.4%
High school diploma or higher97%
Works from home20.2%
Drives to work alone71.7%
Takes public transport1.6%
Commutes 45 minutes or more34.4%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity24.3% 9.1 pts below the national average of 33.4%
Diagnosed diabetes6.9% 5.1 pts below the national average of 12%
Currently smokes8.2% 5 pts below the national average of 13.2%
High blood pressure27.1% 7 pts below the national average of 34.1%
Fair or poor general health12.2% 8.1 pts below the national average of 20.3%
No health insurance (18–64)5.8% 5.5 pts below the national average of 11.3%
Depression26.5% 4.6 pts above the national average of 21.9%
No leisure-time physical activity12.9% 12.5 pts below the national average of 25.4%
Arthritis21.6% 3.5 pts below the national average of 25.1%
Binge drinking18.9% 2.9 pts above the national average of 16%
Taking blood pressure medication67.4% 7.3 pts below the national average of 74.7%
Cancer (non-skin)7.7% same as the national average of 7.7%
Current asthma10.6% same as the national average of 10.4%
Coronary heart disease4.1% 2.1 pts below the national average of 6.2%
Routine check-up in past year70.3% 6.4 pts below the national average of 76.7%
Cholesterol screening87% 1.1 pts above the national average of 85.9%
Cognitive disability11.5% 3.3 pts below the national average of 14.8%
Colorectal screening66.3% 2 pts above the national average of 64.3%
COPD3.8% 2.8 pts below the national average of 6.6%
Visited a dentist73.5% 12.2 pts above the national average of 61.3%
Any disability21.2% 9.5 pts below the national average of 30.7%
Hearing disability4.7% 2 pts below the national average of 6.7%
High cholesterol34.5% 1.7 pts below the national average of 36.2%
Independent living disability5.3% 3.1 pts below the national average of 8.4%
Mammography use76.8% 0.9 pts above the national average of 75.9%
Poor mental health (14+ days)15.8% 1 pts below the national average of 16.8%
Mobility disability7.5% 6.5 pts below the national average of 14%
Poor physical health (14+ days)10.5% 3 pts below the national average of 13.5%
Self-care disability2.4% 1.6 pts below the national average of 4%
Sleeps under 7 hours29.1% 7.3 pts below the national average of 36.4%
Stroke2.3% 1.1 pts below the national average of 3.4%
All natural teeth lost6.1% 6.9 pts below the national average of 13%
Vision disability3% 2.6 pts below the national average of 5.6%
Advertisement
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments742
People employed5,717
Annual payroll$294,527,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 86.8% of US census tracts
FEMA ratingVery Low to Very High across the 12 census tracts this ZIP code covers
Expected annual loss90.2 out of 100
Community resilience80.9 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Avalanche96.5Relatively High at its worst in this ZIP code
Landslide93.2Relatively Moderate at its worst in this ZIP code
Volcanic activity90.2Relatively Low at its worst in this ZIP code
Earthquake89.8Relatively High at its worst in this ZIP code
River flooding81.5Relatively High at its worst in this ZIP code
Wildfire75.4Relatively Low at its worst in this ZIP code
Winter weather40.1Relatively Low at its worst in this ZIP code
Heat wave39.6Relatively Low at its worst in this ZIP code
Ice storm37.3Relatively Low at its worst in this ZIP code
Cold wave21.5Relatively Low at its worst in this ZIP code
Tornado13.1Very Low at its worst in this ZIP code
Lightning7.9Very Low at its worst in this ZIP code
Hail1.1Very Low at its worst in this ZIP code
Strong wind1Very Low at its worst in this ZIP code
Compared with Washington and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPWashingtonUnited States
Median household income$144,733$94,952$78,538
Income per person$56,421$51,493$43,289
Poverty rate5.2%9.9%12.4%
Median home value$714,100$519,800$303,400
Median gross rent$2,152$1,682$1,348
Homeownership86.1%63.9%65%
Bachelor's degree or higher46.4%38.8%35%
Unemployment rate4.3%5%5.2%
Works from home20.2%17.7%13.5%
Born outside the US12.9%15.1%13.9%
Median age38.738.238.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationLANDSBURG, WA US7.3 km away
Rain in a year60 in

Average high and low by month

January45.7°F / 33°F7.99 in rain
February48.9°F / 32.8°F5.44 in rain
March53.3°F / 34.7°F6.19 in rain
April58.6°F / 38.5°F5.55 in rain
May65.9°F / 43.9°F3.87 in rain
June70.3°F / 48.2°F3.15 in rain
July77°F / 51.4°F1.29 in rain
August77.3°F / 51.5°F1.64 in rain
September70.6°F / 46.9°F2.83 in rain
October59.5°F / 41.2°F5.76 in rain
November49.9°F / 35.7°F8.51 in rain
December44.5°F / 32.3°F7.46 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarket15% of this ZIP code's area
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 2 school districts, so the address decides which one, not the ZIP code.

Tahoma School District90.2% of this ZIP code's land area
Issaquah School District8.6% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability16more vulnerable than 16% of US census tracts
Socioeconomic status7more vulnerable than 7% of US census tracts
Household characteristics28more vulnerable than 28% of US census tracts
Racial and ethnic minority status32more vulnerable than 32% of US census tracts
Housing type and transport43more vulnerable than 43% of US census tracts
Walkability6.4 out of 20Below average
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

98042 Kent, WA5.1 km away
98025 Hobart, WA7.6 km away
98058 Renton, WA8.4 km away
98010 Black Diamond, WA9 km away
98093 Federal Way, WA9.2 km away
98031 Kent, WA10.2 km away
98089 Kent, WA10.9 km away
98092 Auburn, WA11.1 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

King County100% of this ZIP code's land area
Time zonePacific (UTC-08:00 standard)
Daylight saving timeObserved
Land area65.81 sq mi
Water area0.36 sq mi
Population density575 people per sq mi
Latitude, longitude47.3845, -122.0574

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

Advertisement