99349 ZIP Code — Mattawa, WA

Grant County, Washington

ZIP code 99349 is located in Mattawa, Washington, within Grant County. It covers approximately 267.38 square miles and serves a population of 7,531 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.

About ZIP code 99349

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $385,000. Owner-occupancy sits near the national average at 55%.

Median household income is $70,911.

The dominant occupation class is natural resources, construction, and trades, with agriculture and mining as the leading industry. The average commute of 23 minutes is near the national average.

College attainment at 14% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (21%) compared to national benchmarks. 35% of residents lack health insurance, above the national average.

Notable community characteristics include Spanish spoken in 44% of households.

7,531

population

267.38

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

99349 ZIP code map

Cities in ZIP code 99349

Below are the cities the US Postal Service accepts for ZIP code 99349. Using any city not on this list may result in mail delivery delays.

City	Status
Mattawa	Acceptable

Demographics updated 05/2026

Population
Total population	7,531
Population density	28 / sq mi
State FIPS	53
County FIPS	025

Geography
Land area	267.38 sq mi
Water area	10.66 sq mi
Latitude	46.7784
Longitude	-119.6712
Timezone	Pacific (PT)
Area code	509

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	38.0%	42.1%	31.7%
$50k – $100k	38.0%	34.5%	30.6%
$100k – $200k	20.7%	19.6%	27.1%
Over $200k	3.4%	3.7%	10.6%

Demographics & statistics

7,531

Population

People per sq mi

30.0

Median age

$70,911

Median household income

$32,799

Per capita income

$385,000

Median home value

$1,097

Median monthly rent

55.2%

Home ownership

14.1%

Poverty rate

5.9%

Unemployment

1,668

Housing units

14.0%

Bachelor's or higher

Age distribution

Male Female

304

Under 5

224

416

5–9

307

451

10–14

333

299

15–19

220

303

20–24

224

646

25–34

476

579

35–44

428

496

45–54

366

152

55–59

112

277

60–64

204

293

65–74

216

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	2,265	30.1%
18 and over	5,266	69.9%
65 and over	714	9.5%
Median age	30.0 years

Race & ethnicity

Hispanic or Latino 40.9%

Other race 32.5%

White 17.3%

Two or more races 8.6%

American Indian / Alaska Native 0.5%

Asian 0.3%

Group	Count	%
Hispanic or Latino	5,204	40.9%
Other race	4,136	32.5%
White	2,203	17.3%
Two or more races	1,100	8.6%
American Indian / Alaska Native	60	0.5%
Asian	32	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	38.0%	42.1%	31.7%
$50k – $100k	38.0%	34.5%	30.6%
$100k – $200k	20.7%	19.6%	27.1%
Over $200k	3.4%	3.7%	10.6%

Under $10k 5.3%

$10k–$15k 4.4%

$15k–$25k 3.9%

$25k–$35k 14.7%

$35k–$50k 11.3%

$50k–$75k 14.1%

$75k–$100k 18.0%

$100k–$150k 11.3%

$150k–$200k 11.2%

$200k+ 5.8%

Range	% of households
Under $10k	5.3%
$10k–$15k	4.4%
$15k–$25k	3.9%
$25k–$35k	14.7%
$35k–$50k	11.3%
$50k–$75k	14.1%
$75k–$100k	18.0%
$100k–$150k	11.3%
$150k–$200k	11.2%
$200k+	5.8%
Median income	$70,911

Housing

Home values

Under $50k 14.6%

$100k–$150k 2.7%

$150k–$200k 4.6%

$200k–$300k 17.4%

$300k–$500k 39.2%

$500k–$1M 16.5%

$1M+ 5.1%

Housing overview

Metric	Value
Median home value	$385,000
Median rent / month	$1,097
Owner occupied	55.2%
Renter occupied	44.8%
Vacant	16.0%
Single-family detached	45.5%
Large apartment buildings	0.4%
Mobile homes	42.8%
Median rooms	5.2
Avg household size (owned)	2.99

Year built

Era	%
2020 or later	0.0%
2010–2019	15.6%
2000–2009	28.6%
1990–1999	27.7%
1980–1989	5.3%
1970–1979	16.0%
1960–1969	6.2%
1950–1959	0.4%
1940–1949	0.0%
1939 or earlier	0.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	4.7%
2 bedrooms	33.2%
3 bedrooms	51.3%
4 bedrooms	5.3%
5+ bedrooms	5.5%

Vehicles per household

Vehicles	% of households
No vehicle	8.2%
1 vehicle	20.7%
2 vehicles	44.4%
3 or more	26.7%

Heating fuel

Fuel type	%
Utility gas	0.8%
Electricity	98.5%
Propane / LP gas	0.8%

Households & families

Household type	Count	%
Married-couple family	1,085	48.3%
Cohabiting couple	293	13.0%
Male householder, no spouse	435	19.4%
Female householder, no spouse	434	19.3%
Households with children under 18	1,142	50.8%
Households with seniors (65+)	525	23.4%
Average household size	3.26

Marital status

Status	Male	Female
Never married	40.1%	36.1%
Married	49.0%	48.3%
Separated	0.7%	4.5%
Widowed	4.1%	7.2%
Divorced	6.1%	3.8%

Education

Less than 9th grade 32.9%

Some HS, no diploma 15.2%

HS graduate 21.0%

Some college, no degree 14.5%

Associate's degree 2.3%

Bachelor's degree 12.9%

Graduate / professional 1.1%

Metric	%
HS diploma or higher	51.8%
Bachelor's or higher	14.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	192	9.1%
Kindergarten	101	4.8%
Elementary school	1,297	61.3%
High school	363	17.2%
College / grad school	163	7.7%

Employment

Industry of employment

Agriculture & mining 68.6%

Education & healthcare 14.3%

Public administration 3.3%

Professional & management 2.9%

Construction 2.2%

Retail trade 2.1%

Manufacturing 1.9%

Wholesale trade 1.3%

Transportation & utilities 1.2%

Finance & real estate 0.9%

Other services 0.5%

Information 0.4%

Arts, food & hospitality 0.3%

Occupation

Category	%
Management, business & arts	21.7%
Service	7.5%
Sales & office	3.3%
Natural resources & construction	61.6%
Production & transportation	5.9%

Employment type

Type	%
Private sector	82.2%
Government	14.9%
Self-employed	2.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	64.8%
Carpool	25.4%
Public transit	0.7%
Walk	2.6%
Work from home	6.1%
Other means	0.3%
Avg commute (minutes)	22.5

Poverty

All people 14.1%

Under 18 years 15.7%

18 and over 13.4%

Married-couple families 4.3%

Female-led households 22.8%

Income support

Source	% of households
Social Security	22.4%
Retirement income	14.3%
Supplemental Security	1.0%
Cash public assistance	0.4%
Food stamps / SNAP	16.6%

Health indicators

Condition	%
Obesity	36.5%
High blood pressure	27.4%
High cholesterol	29.9%
Diabetes	10.9%
Heart disease	5.1%
Stroke	2.8%
Asthma	11.4%
Arthritis	16.9%
Kidney disease	2.9%
Pulmonary disease	6.1%
Cancer	3.4%

Behavior / access	%
Smoking	20.5%
Binge drinking	16.5%
No physical activity	32.6%
Less than 7 hrs sleep	32.1%
Depression	23.8%
Fair or poor health	24.8%
Poor mental health	18.9%
Poor physical health	14.2%
No health insurance	36.9%
Visited doctor (checkup)	62.5%
Visited dentist	46.5%
Cholesterol screening	75.7%
Teeth loss	23.1%

Veterans & disability

Veterans	Count	%
Civilian veterans	90	1.7%

Disability	%
Any disability	6.9%
Under 18	1.7%
18–64 years	7.7%
65 and over	17.6%

Health insurance coverage

Type	%
Private insurance	25.7%
Public insurance	42.1%
No insurance	35.3%
Uninsured under 19	2.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	7,003	93.0%
Spanish	3,046	43.5%
Other Indo-European	3,046	43.5%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,326	57.4%
Born in same state	4,302	57.1%
Born in different state	3,245	43.1%
Foreign born	24	0.3%
Naturalized citizen	3,205	42.6%
Not a US citizen	393	12.3%

Ancestry

Ancestry	Count	%
French	329	4.4%
Italian	149	2%
Dutch	125	1.7%

Ancestry	Count	%
Polish	90	1.2%
Arab	87	1.2%
English	28	0.4%

Technology access

Metric	% of households
Computer access	29.8%
Internet access	96.8%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 99349

What city is ZIP code 99349 in?

ZIP code 99349 is primarily assigned to Mattawa, Washington.

What county is ZIP code 99349 in?

ZIP code 99349 falls within Grant County, Washington.

Is Spanish widely spoken in ZIP code 99349?

Approximately 44% of households in ZIP code 99349 speak Spanish as a primary language.

Is ZIP code 99349 family-oriented?

30% of residents in ZIP code 99349 are under 18, reflecting a younger, family-oriented community.

How educated is the population of ZIP code 99349?

14% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What is the typical home value in ZIP code 99349?

The median home value in ZIP code 99349 is $385,000.

What timezone is ZIP code 99349 in?

ZIP code 99349 observes the PST timezone.