La Grande
- County:
- Union County
- County Seat:
- Yes
- Area (mi²):
- 4.583
- State:
- Oregon
La Grande is a city located in Union County, Oregon. La Grande has a 2026 population of 13,058. It is also the county seat of Union County. La Grande is currently growing at a rate of 0.04% annually and its population has increased by 0.4% since the most recent census, which recorded a population of 13,006 in 2020.