PlainZIP

Prosser, WA · standard

ZIP Code 99350

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

12,979
9/sq mi
$81,014
Median income
$338,500
Median home value
21.5%
Bachelor's or higher

The verdict

Prosser pairs an above-median household income with above-median home values, in a rural, homeowner-dominated area.

Top 37%
household income, US ZIPs
Top 28%
home value, US ZIPs
9
people per sq mi
64%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 99350 against every reporting US ZIP.

ZIP code 99350 is classified by USPS as a standard delivery area and covers roughly 1474.9 square miles in Prosser, Benton County, Washington. The area is home to 12,979 residents, producing a population density of 9 people per square mile, and falls within the Los Angeles time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 99350 against Washington and the nation.

On the economic side, the median household income for ZIP 99350 sits at $81,014 (11% below the Washington average), while per-capita income is $29,262. The poverty rate stands at 12.4% and the unemployment rate at 8.2%. On housing, the median home value is $338,500 (34% below the state average) with median rent at $983 per month, and 63.7% of occupied units are owner-occupied, a direct signal of whether 99350 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 21.5% of adults hold a bachelor's degree or higher, the median age is 32.9, and the average commute is 22 minutes. Use the benchmarks above to see where 99350 sits relative to Washington and the national baseline rather than viewing the numbers in isolation. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →

Top industries in ZIP 99350

Top 5 sectors by establishment count

Which industries have the most business establishments in ZIP 99350.

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 + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 99350, Prosser, WA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.

Quick Facts

12,979

Population

1474.9

Area (sq mi)

9

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 99350?

32.9

Median Age

51.2%

Male

48.8%

Female

15.8%

Foreign-Born

White 54.6%
African American 0.4%
Asian 1.8%
American Indian or Alaska Native 0.8%
Native Hawaiian or Pacific Islander 0.1%
Two or More Ethnicities 23.8%
Hispanic or Latino 49.7%

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?

$81,014

Median Household Income

-11% vs state

$29,262

Per Capita Income

12.4%

Poverty Rate

8.2%

Unemployment Rate

22.4 min

Mean Commute Time

How ZIP 99350 ranks nationally

Household income vs. every US ZIP code

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

$81,014 Top 37% higher than 63% 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%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $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 50.8%
Bachelor's Degree or Higher 21.5%

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

What does housing look like?

5,059

Total Housing Units

4,676

Occupied Units

383

Vacant Units

3.06

Avg Household Size

Occupancy Type

Owner 63.7%
Renter 36.3%

$338,500

Median Home Value

-34% vs state

$983

Median Rent

1986

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)

314

HPI Index (2000 = 100)

+214%

Total Change Since 2000

Home values in ZIP 99350 have decreased 0.3% over the past year (2024). Since 2000, this ZIP has seen +214% cumulative appreciation.

Year Annual Change HPI Index
2020 +3.5% 227
2021 +14.7% 260
2022 +14.8% 298
2023 +5.7% 315
2024 -0.3% 314

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 266 business establishments in ZIP 99350, employing approximately 3,100 people with a combined annual payroll of $177,912,000.

266

Businesses

3,100

Employees

$177.9M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Accommodation and food services 34 12.8%
Retail trade 32 12.0%
Other services (except public administration) 29 10.9%
Manufacturing 28 10.5%
Construction 27 10.2%
Health care and social assistance 26 9.8%
Transportation and warehousing 15 5.6%
Professional, scientific, and technical services 14 5.3%
Administrative and support and waste management and remediation services 14 5.3%
Real estate and rental and leasing 13 4.9%
Wholesale trade 10 3.8%
Finance and insurance 10 3.8%
Arts, entertainment, and recreation 5 1.9%
Agriculture, forestry, fishing and hunting 4 1.5%
Information 3 1.1%

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

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
99338 standard
Kennewick, WA
Pop: 11,555

Related Areas

Benton County Prosser, WA Washington

Frequently Asked Questions

What county is ZIP code 99350 in? ▼
ZIP code 99350 (Prosser) 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 99350? ▼
ZIP code 99350 in Prosser, WA has a population of 12,979 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 99350? ▼
The median household income in ZIP 99350 is $81,014, which is 6% above the national average of $76,288.
What is the average home value in ZIP 99350? ▼
The median home value in ZIP 99350 is $338,500, which is 22% above the national average of $278,155.
What is the demographic makeup of ZIP 99350? ▼
The largest racial group in ZIP 99350 is White at 54.6%. Hispanic or Latino residents make up 49.7% of the population.
How many businesses are in ZIP code 99350? ▼
ZIP code 99350 has 266 business establishments employing approximately 3,100 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 99350? ▼
The top industries by establishment count in ZIP 99350 are: Accommodation and food services (34), Retail trade (32), Other services (except public administration) (29). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 99350? ▼
According to the FHFA House Price Index, home values in ZIP 99350 decreased by 0.3% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 214%. 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 99350? ▼
In ZIP code 99350, 50.8% of residents aged 25+ have a high school diploma or higher, and 21.5% 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 99350? ▼
The mean commute time for workers in ZIP code 99350 is 22.4 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 99350? ▼
In ZIP code 99350, approximately 63.7% of occupied housing units are owner-occupied and 36.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 99350? ▼
The poverty rate in ZIP code 99350 is 12.4% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

ZIP Code Research Guides

Reading Census Demographics
How to interpret population, income, and education data from the Census Bureau.
Understanding ZIP Code Data
What ZIP codes are, how ZCTAs differ, and what the data reveals.
Best ZIP Codes for Families
Key factors to evaluate when choosing a family-friendly neighborhood.
ZIP Codes for Relocation
Data-driven tips for evaluating ZIP codes before a move.

Official Data Resources for Prosser, WA

Verify and explore additional data for this area using these official government sources.

U.S. Census Bureau
Official demographic, economic, and housing data from the American Community Survey.
HUD Fair Market Rents
Department of Housing and Urban Development rental cost estimates by metropolitan area.
FBI Uniform Crime Reports
Official crime statistics compiled from law enforcement agencies nationwide.
FHFA House Price Index
Federal Housing Finance Agency home value trends based on repeat sales and appraisals.

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