Prosser, Benton County, Washington

Prosser: County seat of Benton County, Washington


Prosser is a city located in the county of Benton in the U.S. state of Washington. Its population at the 2010 census was 5,714 and a population density of 482 people per km². After 10 years in 2020 city had an estimated population of 6,398 inhabitants.

Quick Facts about Prosser

Population : 6,398 (2020)
Country : United States of America
State : Washington (United States)
County : Benton County
Postal code : 99350
Phone Area Codes : 509
Area : 11.86 km2
Altitude : 666 feet / 203 meters
Capital city : Prosser is capital of Benton County
Time Zone : Pacific Time Zone, UTC−08:00, UTC−07:00
Local time : 03:02:00 (31st May 2023)
Density : 539 Pop. per km² as of 2020
Population growth : 10.69% (2010-2020)
Prosser locator map
Location of Prosser on Washington map.
Prosser Court House image
Prosser Court House
Prosser Court House image


Prosser is located at 46°12'24"N 119°46'8"W (46.2068000, -119.7689200).

Prosser map


The population of Prosser increased by 10.69% in 10 years.

Year Population % Change Method
2010 5,714 - census
2011 5,846 2.26% estimation process
2012 5,840 -0.1% estimation process
2013 5,845 0.09% estimation process
2014 5,858 0.22% estimation process
2015 5,927 1.16% estimation process
2016 6,090 2.68% estimation process
2017 6,299 3.32% estimation process
2018 6,331 0.51% estimation process
2019 6,380 0.77% estimation process
2020 6,398 0.28% estimation process

Prosser zip code is 99350. County name: Benton, County fips: 53005

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People born in Prosser (10)

People born in Prosser, including politician Floyd Hicks, mathematician and physics professor Mary L. Boas, bishop Brian Prior, .


Schools in Prosser

College & universities near Prosser, WA

Code Name City ZIP
234924 Paul Mitchell the School-Richland Richland (WA) 99352

Stations (6)

Amtrak & bus stations near Prosser, WA

Code Name Address Type
PSC Pasco Intermodal Train Station 535 North 1st Avenue RAIL
PEN Pendleton, Oregon 320 SW Court Street BUS
MLK Moses Lake, Washington 1819 East Kittleson Road BUS
WIH Wishram 1 Railroad Avenue RAIL
WWA Walla Walla, WA 108 West Main Street BUS

Post offices near Prosser

Post Office Name City ZIP
Prosser Post Office Prosser (WA) 99350

Other places with the same name (2)

Other cities in Benton County

Cities, Towns, Neighborhoods & Other Populated Places in Benton County , WA.

City Name Population Title
Kennewick 84,515 City in Benton County, Washington, USA
Richland 59,439 City in Benton County, Washington
West Richland 15,423 City in Benton County, Washington
Finley 6,012 City in North Dakota
Benton City 3,495 City in Benton County, Washington, United States

Distance to Other Cities

Prosser distances to largest Washington cities