Cities and Towns in Umatilla County, Oregon
Founded in 1862, Umatilla County is one of 36 counties in the state of Oregon. Historically, Umatilla County was formed from Central portion of Wasco County. The city of Pendleton is the county seat. With FIPS code of 59, Umatilla County has a population of 79,988 and area of 3,215 square miles (8,327 km²).
List of all cities in Umatilla County, OR alphabetically
| City/Town | Postal Code | Area Code |
| Adams, OR | 97810 | 541 |
| Athena, OR | 97813 | 541 |
| Cayuse, OR | 97801 | 541 |
| Dale, OR | 97880 | 541 |
| Echo, OR | 97826 | 541 |
| Helix, OR | 97835 | 541 |
| Hermiston, OR | 97838 | 541 |
| McNary, OR | 97882 | 541 |
| Meacham, OR | 97859 | 541 |
| Milton Freewater, OR | 97862 | 541 |
| Pendleton, OR | 97801 | 541 |
| Pilot Rock, OR | 97868 | 541 |
| Stanfield, OR | 97875 | 541 |
| Ukiah, OR | 97880 | 541 |
| Umatilla, OR | 97882 | 541 |
| Weston, OR | 97886 | 541 |
Major Cities and Towns in Umatilla County, Oregon
Pendleton
Overview
Pendleton, the county seat of Umatilla County, is a historic city located along the Umatilla River in northeastern Oregon. Established in the mid-1800s, Pendleton became known for its role as a trade center along the Oregon Trail. The city is famous for the Pendleton Round-Up, an annual rodeo that attracts visitors from across the country, showcasing its Western heritage. Pendleton High School and Blue Mountain Community College are key educational institutions serving the area. Landmarks include the Pendleton Woolen Mills, where the city’s iconic blankets are crafted, the Tamástslikt Cultural Institute, which honors the region’s Native American history, and the historic Pendleton Underground Tours, offering a glimpse into the city’s past.
Key Information
- Area: 10.52 square miles
- Population: Approximately 17,000
- Zip Codes: 97801
- Latitude and Longitude: 45.6721° N, 118.7886° W
Hermiston
Overview
Hermiston, the largest city in Umatilla County, is situated near the Columbia River and Interstate 84. Founded in the late 19th century, Hermiston grew as a farming community, with its fertile lands supporting the production of watermelons and other crops. Today, Hermiston serves as a regional hub for commerce and agriculture. Hermiston High School is a major educational institution known for its strong academics and extracurricular programs. Landmarks include the Butte Park, the Umatilla National Wildlife Refuge, and the annual Umatilla County Fair, which highlights the city’s agricultural heritage and vibrant community life.
Key Information
- Area: 7.82 square miles
- Population: Approximately 19,000
- Zip Codes: 97838
- Latitude and Longitude: 45.8407° N, 119.2895° W
Milton-Freewater
Overview
Milton-Freewater, located in the Walla Walla Valley, combines small-town charm with a rich agricultural heritage. Established as two separate towns—Milton and Freewater—it merged in 1950 to form a single community. The city is known for its vineyards and orchards, making it a key part of Oregon’s wine region. Major schools include McLoughlin High School, which serves local students. Landmarks include the Milton-Freewater Downtown Historic District, local wineries, and the annual Muddy Frogwater Festival, a celebration of the city’s unique identity and community spirit.
Key Information
- Area: 2.3 square miles
- Population: Approximately 7,000
- Zip Codes: 97862
- Latitude and Longitude: 45.9376° N, 118.3962° W
Umatilla
Overview
Umatilla, located along the Columbia River, is a historic city with roots dating back to the mid-1800s as a key river port during the gold rush era. Today, it serves as a gateway to outdoor recreation, including fishing and boating on the Columbia River. Umatilla High School serves the city’s student population. Landmarks include the McNary Dam and Recreation Area, providing opportunities for wildlife observation and water activities, and the nearby Hat Rock State Park, a scenic site that recalls the Lewis and Clark Expedition.
Key Information
- Area: 4.55 square miles
- Population: Approximately 7,500
- Zip Codes: 97882
- Latitude and Longitude: 45.9171° N, 119.3426° W
Stanfield
Overview
Stanfield, located south of Hermiston along Interstate 84, is a small agricultural town with a close-knit community. Founded in the early 20th century, Stanfield grew as a farming center, with its economy rooted in wheat, hay, and cattle. Stanfield Secondary School provides education to local students, emphasizing small class sizes and strong community involvement. Landmarks include local parks such as Bard Park, and the nearby Echo Meadows Interpretive Trail, which offers insight into the Oregon Trail’s history.
Key Information
- Area: 1.53 square miles
- Population: Approximately 2,000
- Zip Codes: 97875
- Latitude and Longitude: 45.7798° N, 119.2184° W
Echo
Overview
Echo, a small town near the Umatilla River, is steeped in history, with its roots as a station along the Oregon Trail. Established in the 19th century, Echo has preserved much of its pioneer charm, with several historic buildings and sites. Echo School serves the local community with education from kindergarten through high school. Landmarks include the Echo Ridge Cellars, Fort Henrietta Park, and the Oregon Trail Interpretive Park, which highlights the town’s significant role in the westward expansion.
Key Information
- Area: 0.58 square miles
- Population: Approximately 700
- Zip Codes: 97826
- Latitude and Longitude: 45.7432° N, 119.1946° W
Umatilla County’s cities and towns showcase a unique blend of history, culture, and natural beauty, contributing to the region’s agricultural and economic prominence in Oregon.
