Postal Codes

99349 ZIP Code

Advertisement

English Español

ZIP code 99349 covers Mattawa, Washington, with a population of about 8,098 and a median household income of $62,851.

Population
8,09830 per square mile
Median age
29.59.2 points below the US average
Median household income
$62,85134% below the Washington median
Poverty rate
16.5%4.1 points above the US average
Typical home value
$449,574up 20.1% in five years
Median rent
$1,18130% below the Washington median
Degree or higher
12.8%22.2 points below the US average
Homeownership
56.5%8.5 points below the US average
Time zone
Pacific UTC-08:00observes daylight saving time
Businesses
75

Where 99349 is

Mattawa, 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

Population8,098
Median age29.5
Family households75.7%
Born outside the US41.6%
Speaks a language other than English at home79.7%
White (non-Hispanic)16.6%
Black (non-Hispanic)0.2%
Asian (non-Hispanic)0%
Hispanic or Latino82.7%
Veterans1.9%
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$62,851
Income per person$31,957
Poverty rate16.5%
Households on SNAP or cash assistance22.5%

Household income distribution

Under $10k3.0%
$10–15k4.5%
$15–20k1.1%
$20–25k4.8%
$25–30k8.8%
$30–35k5.1%
$35–40k3.8%
$40–45k2.1%
$45–50k10.2%
$50–60k6.2%
$60–75k7.0%
$75–100k16.9%
$100–125k8.1%
$125–150k3.8%
$150–200k8.6%
$200k or more6.1%

Income as declared to the IRS

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

Tax returns filed3,730
Mean adjusted gross income$47,651
Returns declaring $200,000 or more1.9%
Returns, under $25k39.1%
Returns, $25k–$50k36.2%
Returns, $50k–$75k12.3%
Returns, $75k–$100k5.1%
Returns, $100k–$200k5.4%
Returns, $200k or more1.9%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$409,000
Median gross rent$1,181
Rent as a share of household income27.1%
Owner-occupied56.5%
Vacant homes16%
Median year built1999

What the homes are

Detached house45.6%
Attached house1.8%
2 to 4 units9.7%
5 to 19 units0.8%
20 or more units0.5%
Mobile home41.6%
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$449,574as of 2026-07
Typical home value, 1 yeardown 1.6%
Typical home value, 5 yearsup 20.1%
Typical home value, 10 yearsup 136%
Typical home value since 2000
200920172026$456,675$181,954

$224,101 in 2009 to $449,574 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate6.9%
Bachelor's degree or higher12.8%
High school diploma or higher53.9%
Works from home8.2%
Drives to work alone60%
Takes public transport1.6%
Commutes 45 minutes or more7.9%
Health

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

Obesity43% 9.6 pts above the national average of 33.4%
Diagnosed diabetes13% 1 pts above the national average of 12%
Currently smokes14.9% 1.7 pts above the national average of 13.2%
High blood pressure30.4% 3.7 pts below the national average of 34.1%
Fair or poor general health32.7% 12.4 pts above the national average of 20.3%
No health insurance (18–64)33.9% 22.6 pts above the national average of 11.3%
Depression22.2% same as the national average of 21.9%
No leisure-time physical activity34.2% 8.8 pts above the national average of 25.4%
Arthritis20.6% 4.5 pts below the national average of 25.1%
Binge drinking17.4% 1.4 pts above the national average of 16%
Taking blood pressure medication64.4% 10.3 pts below the national average of 74.7%
Cancer (non-skin)4.5% 3.2 pts below the national average of 7.7%
Current asthma10.4% same as the national average of 10.4%
Coronary heart disease5.9% same as the national average of 6.2%
Routine check-up in past year64.4% 12.3 pts below the national average of 76.7%
Cholesterol screening72.5% 13.4 pts below the national average of 85.9%
Cognitive disability22.7% 7.9 pts above the national average of 14.8%
Colorectal screening48.3% 16 pts below the national average of 64.3%
COPD5.9% 0.7 pts below the national average of 6.6%
Visited a dentist45.6% 15.7 pts below the national average of 61.3%
Any disability39.9% 9.2 pts above the national average of 30.7%
Hearing disability7.3% 0.6 pts above the national average of 6.7%
High cholesterol32% 4.2 pts below the national average of 36.2%
Independent living disability11.4% 3 pts above the national average of 8.4%
Mammography use64.6% 11.3 pts below the national average of 75.9%
Poor mental health (14+ days)19.2% 2.4 pts above the national average of 16.8%
Mobility disability16.3% 2.3 pts above the national average of 14%
Poor physical health (14+ days)17.5% 4 pts above the national average of 13.5%
Self-care disability6% 2 pts above the national average of 4%
Sleeps under 7 hours34.8% 1.6 pts below the national average of 36.4%
Stroke3.3% same as the national average of 3.4%
All natural teeth lost15% 2 pts above the national average of 13%
Vision disability10.1% 4.5 pts above the national average of 5.6%
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments75
People employed607
Annual payroll$26,860,000
Advertisement
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 69.9% of US census tracts
FEMA ratingRelatively Moderate
Expected annual loss47.8 out of 100
Community resilience4 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.

Volcanic activity95.8Relatively Low at its worst in this ZIP code
Wildfire95.6Relatively Moderate at its worst in this ZIP code
Cold wave88.8Relatively High at its worst in this ZIP code
Landslide85.6Relatively Low at its worst in this ZIP code
River flooding83.6Relatively High at its worst in this ZIP code
Drought82.6Relatively Low at its worst in this ZIP code
Heat wave81.1Relatively Moderate at its worst in this ZIP code
Earthquake80Relatively Moderate at its worst in this ZIP code
Winter weather68.1Relatively Moderate at its worst in this ZIP code
Hail62.3Relatively Low at its worst in this ZIP code
Avalanche50.4Very Low at its worst in this ZIP code
Strong wind45.6Relatively Low at its worst in this ZIP code
Lightning39.2Relatively Low at its worst in this ZIP code
Tornado11.4Very Low at its worst in this ZIP code
Ice storm4.1Very 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$62,851$94,952$78,538
Income per person$31,957$51,493$43,289
Poverty rate16.5%9.9%12.4%
Median home value$409,000$519,800$303,400
Median gross rent$1,181$1,682$1,348
Homeownership56.5%63.9%65%
Bachelor's degree or higher12.8%38.8%35%
Unemployment rate6.9%5%5.2%
Works from home8.2%17.7%13.5%
Born outside the US41.6%15.1%13.9%
Median age29.538.238.7
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 stationPRIEST RAPIDS DAM, WA US13.6 km away
Rain in a year7 in

Average high and low by month

January40.6°F / 29.6°F1.08 in rain
February46.9°F / 32.1°F0.62 in rain
March56.9°F / 37.9°F0.74 in rain
April65.4°F / 44.8°F0.55 in rain
May75.2°F / 52.7°F0.55 in rain
June82°F / 59.6°F0.54 in rain
July91.6°F / 66.5°F0.21 in rain
August90.2°F / 65.9°F0.08 in rain
September80.4°F / 57.7°F0.15 in rain
October65.3°F / 46.4°F0.65 in rain
November49.9°F / 36.2°F0.91 in rain
December40.9°F / 29.9°F1.4 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 supermarket100% of this ZIP code's area
Far from a supermarketNone of this ZIP code
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.

Wahluke School District93.1% of this ZIP code's land area
Royal School District6.9% 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 vulnerability81more vulnerable than 81% of US census tracts
Socioeconomic status71more vulnerable than 71% of US census tracts
Household characteristics60more vulnerable than 60% of US census tracts
Racial and ethnic minority status80more vulnerable than 80% of US census tracts
Housing type and transport88more vulnerable than 88% of US census tracts
Walkability3.9 out of 20Least walkable
Nearby ZIP codes

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

99321 Beverly, WA16.6 km away
98950 Vantage, WA22.2 km away
99357 Royal City, WA25.4 km away
98824 George, WA39.2 km away
98938 Outlook, WA48.6 km away
98944 Sunnyside, WA49 km away
98936 Moxee, WA49.2 km away
98953 Zillah, WA51.2 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.

Grant County100% of this ZIP code's land area
Time zonePacific (UTC-08:00 standard)
Daylight saving timeObserved
Land area267.38 sq mi
Water area10.66 sq mi
Population density30 people per sq mi
Latitude, longitude46.7310, -119.7783

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