Home > WA > Benton County > Prosser > Zip 99350

Zip Code 99350 — Prosser, WA

ZIP Code 99350 is associated with Prosser, WA, in Benton County. The listed population estimate is 14,837; estimated density is 9.5 people per square mile. Among records with population estimates, it ranks #8 of 11 in Benton County and #205 of 597 in WA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (46.144770, -119.709440)

Data MetricLocal Statistic
Postal / Zip Code99350
Primary CityProsser
State / ProvinceWA
CountyBenton
Total Population14,837
Population Density9.5 people/sq mi
TimezoneAmerica/Los_Angeles

How 99350 Compares

MetricZIP 99350Benton County recordsWA records
Population estimate14,837234,788 (sum)7,816,021 (sum)
Population Density9.5 /sq mi----
County population rank#8 of 11----
State population rank#205 of 597----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in WA

ZIP CodeCityDistancePopulation estimate
ZIP 98930Grandview12.4 mi15,730
ZIP 99345Paterson14.6 mi162
ZIP 99320Benton City15.4 mi9,879
ZIP 98935Mabton17.2 mi4,289
ZIP 99353West Richland19.8 mi19,251

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →