Union County is a county located in the U.S. state of Oregon. It lies in the northeastern part of the state and centers on the Grande Ronde Valley and the city of La Grande. According to the 2010 census, the county had a population of 25,748 people. The county seat, La Grande, is the region's principal city and local service center for education, health care and government.
Geography and environment
The county's landscape includes broad valley floors, rolling foothills and nearby mountain ranges. The Grande Ronde Valley is an agricultural basin framed by the Blue Mountains and by forested uplands that transition into public lands and national forest. This mix of valley and high country creates varied habitats and recreational opportunities for hiking, hunting, fishing and winter sports.
History and development
European-American settlement expanded into this part of eastern Oregon during the 19th century, driven by ranching, farming and later rail and road links that connected the valley to wider markets. Towns grew around transportation routes and agricultural centers. Over time local institutions such as schools and colleges helped stabilize communities and shaped regional identity.
Economy and institutions
Agriculture and related industries remain important in the county, with cereal grains, hay and livestock as common products. Timber and services that support regional residents also contribute to the economy. La Grande hosts educational and health facilities that serve much of the county; for example, the city is home to a public regional university and to medical clinics that are focal points for surrounding rural areas.
Community and recreation
- Outdoor recreation in nearby forest and mountain areas.
- Small-town communities with local festivals, markets and historic districts.
- Access to regional transportation routes linking to other parts of Oregon.
For more specific administrative details or official resources, see the county's pages and related state or federal information sources: county information, state pages, Oregon resources, census data, county seat details, and La Grande information.