PlainZIP

Kennewick, WA · standard

ZIP Code 99338

Benton County, Washington - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

11,555
67/sq mi
$111,042
Median income
$551,500
Median home value
39.3%
Bachelor's or higher

The verdict

Kennewick pairs an upper-quartile household income with upper-quartile home values, in a rural, homeowner-dominated area.

Top 13%
household income, US ZIPs
Top 11%
home value, US ZIPs
67
people per sq mi
82%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 99338 against every reporting US ZIP.

ZIP code 99338 is a mid-sized community (a standard USPS delivery area) in Kennewick, Benton County, Washington, home to 11,555 residents across 172.2 square miles, a density of 67 people per square mile, in the Los Angeles time zone.

ZIP 99338 skews affluent, with a median household income of $111,042 (22% above the Washington average), while per-capita income is $49,238. 8.5% of residents live below the poverty line, and the unemployment rate reads 4.3%. The typical home here is valued at $551,500 (8% above the state average); renters pay a median of $1,486 monthly, and 81.9% of units are owner-occupied.

A solid share of residents have a four-year degree: 39.3% of adults hold a bachelor's degree or higher, the median age is 37.6, and the average commute is 22 minutes. A geography-based comparison follows: 3 ZIP codes within about 10 miles of 99338, plus 6 more within Benton County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 99338

Top 5 sectors by establishment count in Kennewick, WA

Which industries have the most business establishments in ZIP 99338.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 99338, Kennewick, WA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

11,555

Population

172.2

Area (sq mi)

67

People / sq mi

Los Angeles

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 99338?

37.6

Median Age

49.2%

Male

50.8%

Female

9.6%

Foreign-Born

White 74.1%
African American 3.8%
Asian 2.6%
American Indian or Alaska Native 0.2%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 11.0%
Hispanic or Latino 17.3%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$111,042

Median Household Income

+22% vs state

$49,238

Per Capita Income

8.5%

Poverty Rate

4.3%

Unemployment Rate

21.8 min

Mean Commute Time

How ZIP 99338 ranks nationally

Kennewick, WA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$111,042 Top 13% higher than 87% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 57.5%
Bachelor's Degree or Higher 39.3%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

7,192

Total Housing Units

6,937

Occupied Units

255

Vacant Units

2.97

Avg Household Size

Occupancy Type

Owner 81.9%
Renter 18.1%

$551,500

Median Home Value

+8% vs state

$1,486

Median Rent

2005

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+0.3%

YoY Change (2024)

296

HPI Index (2000 = 100)

+196%

Total Change Since 2000

Home values in ZIP 99338 have increased 0.3% over the past year (2024). Since 2000, this ZIP has seen +196% cumulative appreciation.

Year Annual Change HPI Index
2020 +4.1% 208
2021 +13.2% 236
2022 +19.0% 281
2023 +5.1% 295
2024 +0.3% 296

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 346 business establishments in ZIP 99338, employing approximately 3,543 people with a combined annual payroll of $239,621,000.

346

Businesses

3,543

Employees

$239.6M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Construction 79 22.8%
Professional, scientific, and technical services 47 13.6%
Health care and social assistance 47 13.6%
Real estate and rental and leasing 43 12.4%
Accommodation and food services 23 6.7%
Wholesale trade 15 4.3%
Retail trade 15 4.3%
Other services (except public administration) 15 4.3%
Finance and insurance 13 3.8%
Administrative and support and waste management and remediation services 13 3.8%
Transportation and warehousing 9 2.6%
Manufacturing 6 1.7%
Information 5 1.4%
Educational services 5 1.4%
Arts, entertainment, and recreation 5 1.4%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 99338 vs 99352 →

ZIP 99338 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 99338 ranks #3 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 99338 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 99338 ranks the highest of 4 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
99352 Richland, WA 26,975 7.2 mi
99336 Kennewick, WA 48,753 6.4 mi
99346 Plymouth, WA 352 10.5 mi

More ZIP Codes in Benton County

99336 standard
Kennewick, WA
Pop: 48,753
99337 standard
Kennewick, WA
Pop: 29,845
99352 standard
Richland, WA
Pop: 26,975
99354 standard
Richland, WA
Pop: 21,343
99353 standard
West Richland, WA
Pop: 13,306
99350 standard
Prosser, WA
Pop: 12,979

Related Areas

Benton County Kennewick, WA Washington

Frequently Asked Questions

What county is ZIP code 99338 in? ▼
ZIP code 99338 (Kennewick) is located in Benton County, Washington. Benton County contains multiple ZIP codes, see the full list at /counties/benton-wa.
What is the population of ZIP code 99338? ▼
ZIP code 99338 in Kennewick, WA has a population of 11,555 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 99338? ▼
The median household income in ZIP 99338 is $111,042, which is 46% above the national average of $76,288.
What is the average home value in ZIP 99338? ▼
The median home value in ZIP 99338 is $551,500, which is 98% above the national average of $278,155.
What is the demographic makeup of ZIP 99338? ▼
The largest racial group in ZIP 99338 is White at 74.1%. Hispanic or Latino residents make up 17.3% of the population.
How many businesses are in ZIP code 99338? ▼
ZIP code 99338 has 346 business establishments employing approximately 3,543 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 99338? ▼
The top industries by establishment count in ZIP 99338 are: Construction (79), Professional, scientific, and technical services (47), Health care and social assistance (47). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 99338? ▼
According to the FHFA House Price Index, home values in ZIP 99338 increased by 0.3% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 196%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 99338? ▼
In ZIP code 99338, 57.5% of residents aged 25+ have a high school diploma or higher, and 39.3% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 99338? ▼
The mean commute time for workers in ZIP code 99338 is 21.8 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 99338? ▼
In ZIP code 99338, approximately 81.9% of occupied housing units are owner-occupied and 18.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 99338? ▼
The poverty rate in ZIP code 99338 is 8.5% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.