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Welcome to Prosser

The city of Prosser is located in Benton County and is the County Seat for Benton County.

From the  Census Estimates for 2015, Prosser has a population of 5,869 people.

Prosser is 660 feet [201 m] above sea level.

Time Zone: Prosser lies in the Pacific Time Zone (PST/PDT) and observes daylight saving time
Prosser is within the (509) area code.
The ZIP code for Prosser: 99350

Population Details

At the time of the 2010 Census, Prosser had a population of 5,714 people. This makes Prosser the county’s 4th most populous community.The population of Prosser represents 0.08% of the population of Washington (which has 6,724,540 people), making it the state’s 113rd most populous community.With a 2010 count of 5,714 people, the population of Prosser increased 18.11% from the 2000 Census (that had a count of 4,838 people).Taken from the 2015 Census Estimates, Prosser had an population of 5,869 people. This is an increase of 2.71% since the 2010 Census (or an increase of 21.31% since the 2000 Census).

Prosser is the historic heart of Washington’s first wine appellation and home to Dr. Walter Clore, Washington States’ wine pioneer. He began growing European wine grape varieties in a small experimental block in the late 1930’s at Prosser’s WSU Irrigated Agriculture and Research Extension Center (IAREC). Dr. Clore convinced growers in the late ’60’s – early 70’s, that vinifera wine grapes could be grown successfully. By the time he retired in 1976 his work blossomed to include over 312 varieties.

Currently, Prosser is seeing rapid growth in the wine industry. There are over 75 wineries within a 50-mile radius, making Prosser the ideal home base to explore “Wine Country”. A large majority of Prosser wineries are located within and between two winery cluster developments, the Prosser Wine and Food Park, I-82, Exit 82, and the Prosser Vintner’s Village located near the I-82 Exit 80, Gap Road interchange. The parks and two mile corridor between them, house over 20 wineries and the site of the Walter Clore Wine and Culinary Center.

Come join in the fun: