Prosser is a city in south-central Washington and the county seat of Benton County. It sits along the Yakima River in the fertile Yakima Valley, about 40 miles northwest of Kennewick. The city is known for vineyards, wineries, agriculture, the Benton County Historical Museum, and its location near the Horse Heaven Hills and Columbia River region.
Location Map of Prosser, Benton County, Washington
About Map: The map shows the location of Prosser in Benton County, in the U.S. state of Washington.
Prosser Map, Washington
About Prosser Map: The Google Map highlights the location of Prosser in Benton County, Washington. Use the zoom, satellite, and street-view options to explore the city's neighborhoods, roads, and nearby places.
Where is Prosser Located?
Prosser is a city located in Benton County, Washington, the United States. It lies along the Yakima River in the lower Yakima Valley of south-central Washington, about 40 miles northwest of Kennewick and roughly 50 miles east of Yakima. Richland is around 35 miles northeast, while Sunnyside is about 20 miles southeast. Prosser is positioned near 46.206° North latitude and 119.769° West longitude. The 2020 Census recorded 6,284 residents. The city covers about 4.58 square miles, or 11.86 square kilometers. Prosser was founded in 1885 by William Farrand Prosser and incorporated in 1899. Agriculture has long shaped the local economy because irrigation and the Yakima River support orchards, vineyards, hops, and other crops. Prosser is widely associated with Washington's wine industry and has numerous vineyards and wineries in the surrounding area. The Walter Clore Wine and Culinary Center is a major regional attraction that celebrates Washington wine and food. A unique fact about Prosser is its connection to Dr. Walter Clore, often called the father of Washington wine research, whose work helped establish the state's modern wine industry. The city also hosts the annual Prosser Balloon Rally, which fills the valley with hot-air balloons. Interstate 82 and nearby US-12 provide convenient connections to Yakima, Tri-Cities communities, and other parts of central Washington.
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Prosser City Facts
| City | Prosser |
| State | Washington |
| County | Benton County |
| Country | United States |
| Region | Yakima Valley and South-Central Washington |
| Incorporated | 1899 |
| Founded | 1885 |
| Total Area | 4.58 sq mi (11.86 sq km) |
| Land Area | 4.56 sq mi (11.81 sq km) |
| Water Area | 0.02 sq mi (0.05 sq km) |
| Elevation | 670 ft (204 m) |
| Population (2023 estimate) | About 6,500 |
| Population (2020 Census) | 6,284 |
| Population Density | 1,378 people per sq mi |
| Time Zone | Pacific Time (PST/PDT) |
| ZIP Codes | 99350 |
| Area Code | 509 |
| Major Highways | I-82, US-12, and WA-22 |
| Public Transit | Benton Area Transit |
| Major Attractions | Walter Clore Wine and Culinary Center, Benton County Historical Museum, Yakima River, and Prosser wineries |
| Official Website | https://www.cityofprosser.com/ |
Distance from Prosser, WA to Nearby Cities
- Benton City, WA – 15 miles (24 km)
- Sunnyside, WA – 20 miles (32 km)
- Grandview, WA – 20 miles (32 km)
- Richland, WA – 35 miles (56 km)
- Kennewick, WA – 40 miles (64 km)
- Pasco, WA – 40 miles (64 km)
- Yakima, WA – 50 miles (80 km)
- West Richland, WA – 30 miles (48 km)
- Wapato, WA – 40 miles (64 km)
- Toppenish, WA – 35 miles (56 km)
- Hermiston, OR – 55 miles (89 km)
- Ellensburg, WA – 95 miles (153 km)
- Walla Walla, WA – 90 miles (145 km)
- Pasco, WA – 40 miles (64 km)
- Spokane, WA – 145 miles (233 km)
- Seattle, WA – 190 miles (306 km)
- Portland, OR – 210 miles (338 km)
- Boise, ID – 240 miles (386 km)
Top Attractions in Prosser
- Walter Clore Wine and Culinary Center – A regional center celebrating Washington wine, agriculture, food, and the work of Dr. Walter Clore.
- Benton County Historical Museum – A local museum preserving artifacts, photographs, and stories from Benton County and the surrounding Columbia Basin.
- Prosser Wine Country – Vineyards and wineries around Prosser showcase the region's role in Washington's wine industry.
- Yakima River – The river runs through the Prosser area and supports agriculture, wildlife habitat, fishing, and scenic outdoor recreation.
- Prosser Farmers Market – A seasonal market featuring locally grown produce, food products, crafts, and community activities.
- Prosser Balloon Rally – An annual hot-air balloon event that brings colorful balloons over the Yakima Valley and attracts visitors from across the region.
- Prosser State Park – A nearby riverside recreation area offering camping, boating, fishing, swimming, and picnic facilities.
- Horse Heaven Hills – The hills south of Prosser provide expansive views of vineyards, farms, grasslands, and the Columbia Basin landscape.
Airports Near Prosser, WA
- Tri-Cities Airport (PSC) – 40 miles
- Yakima Air Terminal–McAllister Field (YKM) – 50 miles
- Eastern Oregon Regional Airport (PDT) – 65 miles
- Walla Walla Regional Airport (ALW) – 90 miles
- Pangborn Memorial Airport (EAT) – 125 miles
Sources:
Population and area data sourced from the United States Census Bureau (2020 Census). General city information referenced from the official Prosser city website and local government records.
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