Summerville is a city in Union County, Oregon, United States.

Summerville was platted on September 20, 1873, along Ruckle Road by William H. Patten.

[5] An 1888 Sanborn map, the first of four of the city, shows an opera hall, bank, livery, drugstore, as well as other stores.

[6] In 1888, half of the main street buildings were destroyed in a fire, but were rebuilt soon after.

As the town was already in a sharp commercial decline by 1910, buildings that were destroyed after then were not replaced.

Oregon Route 82 passes through Imbler, between La Grande to the southwest and Elgin to the northeast.

[9] According to the United States Census Bureau, the town has a total area of 0.26 square miles (0.67 km2), all of it land.

[10] This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F (22.0 °C).