Prosser is a city in Benton County, Washington, home to about 6,305 people across 4.7 square miles. Its ZIP code is 99350.
Homes sold for a median of $244 per square foot in the three months ending August 2026, a buyer’s market.
Each card is that ZIP code’s whole market, including any part outside Prosser. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Prosser’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Portland International Airport (PDX)143 miles away |
|---|---|
| Closer regional airport | Tri Cities Airport (PSC)31 miles away |
| Nearest city of 250,000+ | Portland, OR146 miles away |
Straight-line distances from the center of Prosser; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Prosser had 6,062 residents in the 2020 census, up 25% since 2000.
It’s the 175th largest of 628 towns in Washington by population.
Benton County grew from 7,937 residents in 1910 to 206,873 in 2020.
Benton County, 1910–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 90°F in summer, and winter lows average 26°F. About 8.8 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Prosser, WA weather station (2 miles away).
76,642 jobs at 4,960 businesses in Benton County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
102 doctors and other health care providers list an office in Prosser.
Nearest hospitals
Providers with an office here
| Primary care doctors | 17 |
|---|---|
| Specialist doctors | 20 |
| Dentists | 4 |
| Nurse practitioners and physician assistants | 20 |
| Mental health providers | 12 |
| Physical and occupational therapists | 20 |
| Optometrists | 3 |
| Chiropractors | 6 |
| Pharmacies | 6 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (5 nearby)
Grocery stores (2 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Prosser School District, Toppenish School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Keene-Riverview ElementaryProsser | Pre-K–2 | 407 | Public | 1.6 mi |
| Northwest AllprepProsser | K–12 | 112 | Public | 140.1 mi |
| Prosser Heights ElementaryProsser | K–5 | 412 | Public | 1.2 mi |
| Whitstran ElementaryProsser | K–5 | 261 | Public | 3.1 mi |
| Housel Middle SchoolProsser | 6–8 | 529 | Public | 1.3 mi |
| Prosser High SchoolProsser | 9–12 | 877 | Public | 1.3 mi |
| Prosser Opportunity AcademyProsser | 9–12 | 48 | Alternative Education | 1.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.