Condon is located in Missoula County
, on Hwy 83 along the Swan River, between the Bob Marshall Wilderness
and Mission Mountain Wilderness.
For years it was named only Condon, but local residents petitioned the Post Office to have the name changed to Swan Valley. The Post Office diplomatically decided it would deliver to the same post office in Condon (or Swan Valley) even if people used Swan Valley (Condon) in the address.
Condon, like Seeley Lake to the south, is growing rapidly.