Kennewick ZIP Codes — Benton County, WA

There are 3 unique ZIP codes in Kennewick, Washington. Area code: 509.

ZIP codes

214.79

sq mi land

16.92

sq mi water

509

area code

Kennewick, WA ZIP code map

About Kennewick, WA

Kennewick is a vibrant city located in Washington state, specifically within Benton County. As one of the Tri-Cities alongside Pasco and Richland, it showcases a blend of urban and suburban living. With its thriving economy and scenic landscapes, Kennewick attracts both residents and visitors alike.

Location & geography

Kennewick is situated in the southeastern part of Washington, offering easy access to the Columbia River and surrounding natural beauty. It is approximately 10 miles from Pasco and 20 miles from Richland, providing the community with various neighboring amenities. The city covers a total land area of 250.24 square miles, complemented by a water area of 16.92 square miles.

Community & economy

The character of Kennewick is reflected in its friendly and welcoming community atmosphere. Its economy is diverse, with key industries including agriculture, healthcare, and retail, which contribute to a robust local job market. Daily life in Kennewick is enriched by numerous parks, recreational facilities, and local events that foster community engagement.

Transportation

Kennewick is served by major highways, including Interstate 82 and State Route 240, facilitating easy travel in and out of the city. The nearest airport is the Tri-Cities Airport, which is located about 7 miles away in Pasco, connecting Kennewick to various domestic flights. Public transportation options, including bus services, offer residents additional mobility within the region.

History

Founded in the late 19th century, Kennewick has grown from a small agricultural hub to a thriving city. Historically, the area became significant with the emergence of agriculture and later benefitted from the development of the hydroelectric dams along the Columbia River. Notable events include its incorporation in 1904 and its role as a center for the Hanford Nuclear Site during World War II.

Did you know?

One surprising fact about Kennewick is that it is home to the largest annual event in the Tri-Cities area, the Tri-City Water Follies, which features a spectacular hydroplane race on the Columbia River. Another little-known aspect is that the region around Kennewick is rich in Native American history, with ancient artifacts being discovered in the area.

ZIP codes for Kennewick, WA (3)

ZIP code	City	County	Map
99336	Kennewick	Benton	View map
99337	Kennewick	Benton	View map
99338	Kennewick	Benton	View map

Demographics & statistics

102,222

Population

36.0

Median age

$79,709

Median household income

$36,270

Per capita income

$354,100

Median home value

$1,220

Median monthly rent

73.6%

Home ownership

11.1%

Poverty rate

4.1%

Unemployment

26,809

Housing units

29.8%

Bachelor's or higher

Age distribution

Male Female

3,358

Under 5

3,258

4,190

5–9

4,064

3,482

10–14

3,377

3,901

15–19

3,783

3,233

20–24

3,136

7,016

25–34

6,805

6,822

35–44

6,617

5,670

45–54

5,499

2,875

55–59

2,789

3,318

60–64

3,218

5,065

65–74

4,913

2,059

75–84

1,997

902

85+

875

← Male

Female →

Age summary

Group	Count	%
Under 18	26,509	26.4%
18 and over	75,713	73.6%
65 and over	15,811	15.7%
Median age	36.0 years

Race & ethnicity

White 62.9%

Hispanic or Latino 15.3%

Other race 9.4%

Two or more races 8%

Black or African American 2%

Asian 1.7%

American Indian / Alaska Native 0.7%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	75,880	62.9%
Hispanic or Latino	18,433	15.3%
Other race	11,390	9.4%
Two or more races	9,659	8%
Black or African American	2,353	2%
Asian	2,087	1.7%
American Indian / Alaska Native	788	0.7%
Native Hawaiian / Pacific Islander	65	0.1%

Household income

Under $10k 3.0%

$10k–$15k 2.9%

$15k–$25k 5.3%

$25k–$35k 6.2%

$35k–$50k 10.4%

$50k–$75k 15.2%

$75k–$100k 15.3%

$100k–$150k 17.5%

$150k–$200k 10.5%

$200k+ 13.8%

Range	% of households
Under $10k	3.0%
$10k–$15k	2.9%
$15k–$25k	5.3%
$25k–$35k	6.2%
$35k–$50k	10.4%
$50k–$75k	15.2%
$75k–$100k	15.3%
$100k–$150k	17.5%
$150k–$200k	10.5%
$200k+	13.8%
Median income	$79,709

Housing

Home values

Under $50k 4.2%

$50k–$100k 1.7%

$100k–$150k 3.5%

$150k–$200k 5.3%

$200k–$300k 23.6%

$300k–$500k 40.5%

$500k–$1M 19.2%

$1M+ 2.0%

Housing overview

Metric	Value
Median home value	$354,100
Median rent / month	$1,220
Owner occupied	73.6%
Renter occupied	26.4%
Vacant	5.8%
Single-family detached	68.0%
Large apartment buildings	7.6%
Mobile homes	9.1%
Median rooms	6.0
Avg household size (owned)	2.93

Year built

Era	%
2020 or later	1.1%
2010–2019	16.6%
2000–2009	16.0%
1990–1999	16.4%
1980–1989	7.4%
1970–1979	23.1%
1960–1969	7.5%
1950–1959	7.6%
1940–1949	2.7%
1939 or earlier	1.6%

Bedrooms

Size	% of units
No bedroom (studio)	1.7%
1 bedroom	7.3%
2 bedrooms	19.3%
3 bedrooms	42.9%
4 bedrooms	21.3%
5+ bedrooms	7.5%

Vehicles per household

Vehicles	% of households
No vehicle	4.3%
1 vehicle	24.6%
2 vehicles	35.7%
3 or more	35.4%

Heating fuel

Fuel type	%
Utility gas	18.5%
Electricity	78.9%
Propane / LP gas	1.1%
Fuel oil	0.2%
Wood	0.9%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	18,401	56.3%
Cohabiting couple	2,720	6.7%
Male householder, no spouse	5,673	13.8%
Female householder, no spouse	9,791	23.2%
Households with children under 18	12,524	35.6%
Households with seniors (65+)	10,735	29.9%
Average household size	2.83

Marital status

Status	Male	Female
Never married	35.0%	27.1%
Married	53.2%	51.8%
Separated	1.0%	1.9%
Widowed	1.6%	6.3%
Divorced	9.3%	12.9%

Education

Less than 9th grade 5.8%

Some HS, no diploma 5.2%

HS graduate 23.7%

Some college, no degree 24.4%

Associate's degree 11.1%

Bachelor's degree 18.6%

Graduate / professional 11.2%

Metric	%
HS diploma or higher	89.0%
Bachelor's or higher	29.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	1,267	5.0%
Kindergarten	1,908	6.8%
Elementary school	11,579	44.1%
High school	6,315	25.1%
College / grad school	4,957	18.9%

Employment

Industry of employment

Education & healthcare 21.6%

Retail trade 12.0%

Professional & management 11.4%

Construction 10.1%

Arts, food & hospitality 8.4%

Transportation & utilities 7.0%

Manufacturing 6.3%

Other services 5.9%

Public administration 5.8%

Finance & real estate 4.1%

Agriculture & mining 3.8%

Wholesale trade 2.5%

Information 1.3%

Occupation

Category	%
Management, business & arts	38.1%
Service	16.9%
Sales & office	20.1%
Natural resources & construction	11.7%
Production & transportation	13.3%

Employment type

Type	%
Private sector	75.6%
Government	18.7%
Self-employed	5.6%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	77.9%
Carpool	11.0%
Public transit	0.7%
Walk	0.8%
Other means	0.5%
Avg commute (minutes)	22.4

Poverty

All people 11.1%

Under 18 years 15.5%

18 and over 9.5%

Married-couple families 5.5%

Female-led households 23.2%

Income support

Source	% of households
Social Security	30.3%
Retirement income	25.3%
Supplemental Security	5.5%
Cash public assistance	3.4%
Food stamps / SNAP	13.5%

Health indicators

Condition	%
High blood pressure	29.3%
High cholesterol	32.6%
Heart disease	5.6%
Stroke	2.7%
Asthma	11.0%
Arthritis	23.8%
Kidney disease	2.7%
Pulmonary disease	6.1%
Cancer	6.2%

Behavior / access	%
Binge drinking	16.7%
No physical activity	19.8%
Less than 7 hrs sleep	30.4%
Fair or poor health	14.3%
Poor mental health	15.5%
Poor physical health	10.9%
No health insurance	12.9%
Visited doctor (checkup)	70.6%
Visited dentist	65.1%
Cholesterol screening	86.8%
Teeth loss	12.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	5,957	8.3%

Disability	%
Any disability	15.0%
Under 18	4.0%
18–64 years	13.3%
65 and over	39.2%

Health insurance coverage

Type	%
Private insurance	66.6%
Public insurance	40.3%
Uninsured under 19	2.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	95,606	93.7%
Spanish	9,710	8.5%
Other Indo-European	8,042	6.8%
Asian & Pacific Islander	360	0.4%
Other languages	779	0.9%

Place of birth & citizenship

Origin	Count	%
Native born (US)	88,921	88.0%
Born in same state	88,170	87.3%
Born in different state	54,095	53.1%
Foreign born	751	0.7%
Naturalized citizen	13,301	12.0%
Not a US citizen	5,643	49.2%

Ancestry

Ancestry	Count	%
French	13,122	12.8%
Italian	10,002	9.8%
Arab	4,877	4.8%
Polish	3,641	3.6%

Ancestry	Count	%
English	2,054	2%
Dutch	1,068	1%
Irish	764	0.7%
German	309	0.3%

Technology access

Metric	% of households
Computer access	35.2%
Internet access	96.6%

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

Frequently asked questions

What ZIP codes does Kennewick, WA have?

Kennewick, WA has 3 ZIP codes: 99336, 99337, and 99338. Each ZIP code serves a distinct delivery area within the city and surrounding region.