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Cities and Towns in Benton County, Oregon

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Founded in 1847, Benton County is one of 36 counties in the state of Oregon. Historically, Benton County was formed from Polk County. The city of Corvallis is the county seat. With FIPS code of 3, Benton County has a population of 96,017 and area of 676 square miles (1,751 km²).

List of all cities in Benton County, OR alphabetically

City/Town Postal Code Area Code
Adair Village, OR 97330 541
Alpine, OR 97456 541
Alsea, OR 97324 541
Blodgett, OR 97326 541
Corvallis, OR 97330 541
97331 541
97333 541
97339 541
Monroe, OR 97456 541
Oregon State University, OR 97331 541
Philomath, OR 97370 541

Major Cities and Towns in Benton County, Oregon

Corvallis

Overview

Corvallis, the county seat and largest city in Benton County, is situated in the heart of the Willamette Valley, approximately 85 miles south of Portland. Established in 1851 and originally named Marysville, it was renamed Corvallis—meaning “heart of the valley” in Latin—in 1853. The city’s development was significantly influenced by the establishment of Oregon State University (OSU) in 1868, which has since become a central component of Corvallis’s identity and economy.

  • Area: Approximately 14.3 square miles
  • Population: Around 59,922 residents
  • ZIP Codes: 97330, 97331, 97333, 97339
  • Latitude: 44.5646° N
  • Longitude: 123.2620° W

Education and Landmarks

Corvallis is home to Oregon State University, a leading public research institution offering a wide range of undergraduate and graduate programs. The city’s educational landscape also includes Corvallis High School and Crescent Valley High School, both known for their academic excellence. Notable landmarks in Corvallis include the historic Benton County Courthouse, the oldest courthouse in Oregon still in use, and the Corvallis Farmers’ Market, which showcases local produce and crafts. Additionally, the city boasts numerous parks and natural areas, such as Avery Park and the nearby Willamette River, providing residents and visitors with ample recreational opportunities.

Philomath

Overview

Philomath is a city located just west of Corvallis along U.S. Route 20. Incorporated in 1882, it was named after Philomath College, established by the United Brethren Church in 1867. The name “Philomath” is derived from Greek, meaning “lover of learning.” The college operated until 1929, and its historic building now houses the Benton County Historical Museum, preserving the city’s rich educational heritage.

  • Area: Approximately 2.23 square miles
  • Population: Around 5,838 residents
  • ZIP Code: 97370
  • Latitude: 44.5407° N
  • Longitude: 123.3673° W

Education and Landmarks

Philomath’s educational institutions include Philomath High School, known for its strong academic and athletic programs, and Philomath Elementary School, serving the city’s younger students. A significant landmark is the Benton County Historical Museum, located in the former Philomath College building, which offers exhibits on local history and culture. The city also features Marys River Park, a popular spot for outdoor activities, and hosts the annual Philomath Frolic & Rodeo, celebrating the community’s heritage and spirit.

Monroe

Overview

Monroe is a small city situated in the southern part of Benton County, approximately 20 miles south of Corvallis. Established in the mid-19th century, it developed as a center for agriculture and timber industries. The city’s history is closely tied to the development of the railroad, which facilitated transportation and commerce in the region.

  • Area: Approximately 0.52 square miles
  • Population: Around 647 residents
  • ZIP Code: 97456
  • Latitude: 44.3168° N
  • Longitude: 123.2973° W

Education and Landmarks

Monroe is served by the Monroe School District, which includes Monroe Grade School and Monroe High School, providing education from kindergarten through 12th grade. A notable landmark is the historic Hull-Oakes Lumber Company, one of the last steam-powered sawmills in the United States, reflecting the city’s timber heritage. The city also hosts the annual Monroe Festival, featuring local crafts, food, and entertainment, fostering community engagement and celebrating local culture.

Adair Village

Overview

Adair Village is a small city located north of Corvallis. It originated as a military base during World War II, known as Camp Adair, which was later converted into a residential community. Incorporated in 1976, Adair Village has developed into a quiet, family-friendly community with a focus on preserving its natural surroundings.

  • Area: Approximately 0.6 square miles
  • Population: Around 840 residents
  • ZIP Code: 97330
  • Latitude: 44.6833° N
  • Longitude: 123.2181° W

Education and Landmarks

Adair Village is part of the Corvallis School District, with students attending schools in nearby communities. A significant landmark is the Adair County Park, offering recreational facilities such as sports fields, picnic areas, and walking trails. The city is also adjacent to the William L. Finley National Wildlife Refuge, providing opportunities for wildlife observation and environmental education.

Alsea

Overview

Alsea is an unincorporated community located in the western part of Benton County, nestled in the Coast Range mountains. Established in the mid-19th century, it was named after the Alsea River, which flows through the area. The community has a rich history tied to logging and agriculture, with a strong emphasis on maintaining its rural character and natural beauty.

  • Area: Approximately 1.5 square miles
  • Population: Around 164 residents
  • ZIP Code: 97324
  • Latitude: 44.3782° N
  • Longitude: 123.5876° W

Education and Landmarks

Alsea is served by the Alsea School District, which operates Alsea School, providing education from kindergarten through 12th grade. A notable landmark is the Alsea Falls Recreation Site, offering scenic waterfalls, hiking trails, and picnic areas, attracting visitors seeking outdoor recreation.

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