Brogan is an unincorporated community and Census-designated place in Malheur County, Oregon, United States, on U.S. Route 26. Brogan was founded by D. M. Brogan in 1909, and when a post office was established in the locality on April 23 of that year, it was named for him. Brogan is located on the north end of the now-abandoned Union Pacific Railroad branch line from Vale.Brogan is part of the Ontario, OR–ID Micropolitan Statistical Area. As of the 2010 census, the population was 90. The female population was 47, and the male population was 43. The median age was 50.5 years. There were 41 households, five of which included children under age 18.