99336 ZIP Code — Kennewick, WA

Benton County, Washington

ZIP code 99336 is located in Kennewick, Washington, within Benton County. It covers approximately 13.40 square miles and serves a population of 51,329 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 509.

About ZIP code 99336

The housing stock consists of a mix of housing types. Most homes were built in the 1970s, giving the area an established character. Median home value is $274,100. Owner-occupancy sits near the national average at 50%.

Median household income is $59,688. Poverty affects 18% of residents, above the national average. SNAP benefit usage at 21% of households reflects economic stress in the area.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 21 minutes is near the national average.

College attainment at 20% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 99336 reflects a community defined by economic challenges above the national average and elevated reliance on food assistance.

51,329

population

13.40

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

99336 ZIP code map

Cities in ZIP code 99336

Below are the cities the US Postal Service accepts for ZIP code 99336. Using any city not on this list may result in mail delivery delays.

City	Status
Kennewick	Acceptable
Kennewick	Preferred

Nearby ZIP codes

99352 Richland (6.3 mi) 99337 Kennewick (11 mi) 99353 West Richland (11.7 mi) 99354 Richland (12.7 mi) 99323 Burbank (12.7 mi) 99338 Kennewick (13.4 mi) 99338 Kennewick (13.4 mi) 99320 Benton City (16.8 mi) 99330 Eltopia (18.8 mi)

Demographics updated 05/2026

Population
Total population	51,329
Population density	3,831 / sq mi
State FIPS	53
County FIPS	005

Geography
Land area	13.40 sq mi
Water area	1.22 sq mi
Latitude	46.2193
Longitude	-119.1781
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	47.8%	32.9%	31.7%
$50k – $100k	33.7%	33.1%	30.6%
$100k – $200k	15.5%	26.4%	27.1%
Over $200k	3.0%	7.6%	10.6%

Demographics & statistics

51,329

Population

3,831

People per sq mi

33.4

Median age

$59,688

Median household income

$29,725

Per capita income

$274,100

Median home value

$1,079

Median monthly rent

49.6%

Home ownership

18.0%

Poverty rate

5.1%

Unemployment

11,179

Housing units

20.4%

Bachelor's or higher

Age distribution

Male Female

1,756

Under 5

1,875

1,944

5–9

2,074

1,806

10–14

1,928

1,648

15–19

1,759

1,567

20–24

1,672

4,284

25–34

4,572

3,160

35–44

3,373

2,362

45–54

2,520

1,239

55–59

1,323

1,465

60–64

1,564

2,204

65–74

2,352

916

75–84

977

478

85+

511

← Male

Female →

Age summary

Group	Count	%
Under 18	13,427	26.2%
18 and over	37,902	73.8%
65 and over	7,438	14.5%
Median age	33.4 years

Race & ethnicity

White 56.3%

Hispanic or Latino 18.7%

Other race 12.2%

Two or more races 8.1%

Black or African American 2.4%

Asian 1.4%

American Indian / Alaska Native 0.9%

Group	Count	%
White	35,527	56.3%
Hispanic or Latino	11,806	18.7%
Other race	7,672	12.2%
Two or more races	5,142	8.1%
Black or African American	1,536	2.4%
Asian	876	1.4%
American Indian / Alaska Native	568	0.9%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	47.8%	32.9%	31.7%
$50k – $100k	33.7%	33.1%	30.6%
$100k – $200k	15.5%	26.4%	27.1%
Over $200k	3.0%	7.6%	10.6%

Under $10k 5.2%

$10k–$15k 5.7%

$15k–$25k 9.2%

$25k–$35k 9.8%

$35k–$50k 13.5%

$50k–$75k 17.3%

$75k–$100k 15.1%

$100k–$150k 13.7%

$150k–$200k 5.3%

$200k+ 5.4%

Range	% of households
Under $10k	5.2%
$10k–$15k	5.7%
$15k–$25k	9.2%
$25k–$35k	9.8%
$35k–$50k	13.5%
$50k–$75k	17.3%
$75k–$100k	15.1%
$100k–$150k	13.7%
$150k–$200k	5.3%
$200k+	5.4%
Median income	$59,688

Housing

Home values

Under $50k 6.7%

$50k–$100k 2.7%

$100k–$150k 5.6%

$150k–$200k 9.2%

$200k–$300k 35.5%

$300k–$500k 31.7%

$500k–$1M 7.8%

$1M+ 0.9%

Housing overview

Metric	Value
Median home value	$274,100
Median rent / month	$1,079
Owner occupied	49.6%
Renter occupied	50.4%
Vacant	7.5%
Single-family detached	47.5%
Large apartment buildings	14.1%
Mobile homes	5.2%
Median rooms	5.0
Avg household size (owned)	2.78

Year built

Era	%
2020 or later	0.2%
2010–2019	6.4%
2000–2009	12.0%
1990–1999	12.0%
1980–1989	8.0%
1970–1979	24.6%
1960–1969	14.3%
1950–1959	14.3%
1940–1949	5.1%
1939 or earlier	3.1%

Bedrooms

Size	% of units
No bedroom (studio)	4.0%
1 bedroom	16.4%
2 bedrooms	29.0%
3 bedrooms	35.6%
4 bedrooms	11.7%
5+ bedrooms	3.3%

Vehicles per household

Vehicles	% of households
No vehicle	9.5%
1 vehicle	34.5%
2 vehicles	33.2%
3 or more	22.8%

Heating fuel

Fuel type	%
Utility gas	13.5%
Electricity	84.0%
Propane / LP gas	1.2%
Fuel oil	0.1%
Wood	0.8%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	7,305	37.7%
Cohabiting couple	1,748	9.0%
Male householder, no spouse	3,663	18.9%
Female householder, no spouse	6,668	34.4%
Households with children under 18	6,337	32.7%
Households with seniors (65+)	5,265	27.2%
Average household size	2.60

Marital status

Status	Male	Female
Never married	39.2%	35.6%
Married	44.3%	37.4%
Separated	1.3%	2.9%
Widowed	2.5%	6.2%
Divorced	12.7%	17.9%

Education

Less than 9th grade 7.5%

Some HS, no diploma 7.2%

HS graduate 30.2%

Some college, no degree 24.9%

Associate's degree 9.7%

Bachelor's degree 13.3%

Graduate / professional 7.1%

Metric	%
HS diploma or higher	85.3%
Bachelor's or higher	20.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	650	5.2%
Kindergarten	997	7.9%
Elementary school	5,894	46.9%
High school	2,764	22.0%
College / grad school	2,266	18.0%

Employment

Industry of employment

Education & healthcare 22.4%

Retail trade 13.3%

Arts, food & hospitality 11.4%

Professional & management 10.1%

Construction 9.5%

Manufacturing 7.0%

Other services 4.9%

Agriculture & mining 4.8%

Transportation & utilities 4.8%

Public administration 4.7%

Finance & real estate 3.8%

Wholesale trade 2.6%

Information 0.7%

Occupation

Category	%
Management, business & arts	29.7%
Service	19.8%
Sales & office	20.9%
Natural resources & construction	14.4%
Production & transportation	15.3%

Employment type

Type	%
Private sector	81.7%
Government	14.3%
Self-employed	4.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	79.0%
Carpool	12.1%
Public transit	1.7%
Walk	1.5%
Work from home	5.2%
Other means	0.6%
Avg commute (minutes)	21.4

Poverty

All people 18.0%

Under 18 years 27.0%

18 and over 14.8%

Married-couple families 6.7%

Female-led households 31.9%

Income support

Source	% of households
Social Security	29.3%
Retirement income	22.8%
Supplemental Security	7.3%
Cash public assistance	5.0%
Food stamps / SNAP	20.6%

Health indicators

Condition	%
Obesity	35.5%
High blood pressure	28.9%
High cholesterol	30.6%
Diabetes	9.3%
Heart disease	5.8%
Stroke	2.9%
Asthma	11.6%
Arthritis	22.9%
Kidney disease	2.9%
Pulmonary disease	6.7%
Cancer	5.5%

Behavior / access	%
Smoking	17.9%
Binge drinking	16.7%
No physical activity	23.7%
Less than 7 hrs sleep	31.8%
Depression	28.1%
Fair or poor health	17.4%
Poor mental health	17.3%
Poor physical health	12.1%
No health insurance	17.6%
Visited doctor (checkup)	69.3%
Visited dentist	58.0%
Cholesterol screening	82.8%
Teeth loss	16.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	2,814	7.4%

Disability	%
Any disability	17.9%
Under 18	4.1%
18–64 years	17.9%
65 and over	43.2%

Health insurance coverage

Type	%
Private insurance	54.9%
Public insurance	47.2%
No insurance	11.6%
Uninsured under 19	4.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	47,698	92.9%
Spanish	6,400	13.4%
Other Indo-European	5,652	11.8%
Asian & Pacific Islander	161	0.3%
Other languages	241	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	43,636	85.0%
Born in same state	43,150	84.1%
Born in different state	26,389	51.4%
Foreign born	486	0.9%
Naturalized citizen	7,693	15.0%
Not a US citizen	2,526	32.8%

Ancestry

Ancestry	Count	%
French	6,056	11.8%
Italian	5,191	10.1%
Arab	2,233	4.4%
Polish	2,099	4.1%

Ancestry	Count	%
English	882	1.7%
Dutch	424	0.8%
Irish	150	0.3%
German	106	0.2%

Technology access

Metric	% of households
Computer access	37.8%
Internet access	93.6%

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

Frequently asked questions about ZIP code 99336

What part of Kennewick is ZIP code 99336?

ZIP code 99336 covers a portion of Kennewick, Washington, within Benton County.

What county is ZIP code 99336 in?

ZIP code 99336 falls within Benton County, Washington.

What is the poverty rate in ZIP code 99336?

18% of residents in ZIP code 99336 live below the poverty line, above the national average.

What is the population of ZIP code 99336?

ZIP code 99336 has an estimated population of 51,329 residents, with a density of 3,832 people per square mile.

What is the median household income in ZIP code 99336?

The median household income in ZIP code 99336 is $59,688, below the national median of ~$75,000.

What is the typical home value in ZIP code 99336?

The median home value in ZIP code 99336 is $274,100.

What timezone is ZIP code 99336 in?

ZIP code 99336 observes the PST timezone.