Eureka Bar is a former town located in Wallowa County, Oregon, United States, which was formed at the confluence of the Imnaha and Snake Rivers in 1903.

[2] The town came into being due to local copper mining operations.

[2] It included a smelting tower 13 stories tall, a hotel, and a warehouse were constructed in 1903.

[2] A post office operated in Eureka Bar in 1903.

[2] A Wallowa County mail delivery man, W.K.