DescriptionWibaux (pronounced “WEE-bow”)derives its name from a French cattleman, Pierre Wibaux, who first arrived in Montana in 1884. After the brutal winter of 1886–87, Wibaux bought up the stock of less fortunate ranchers and expanded his herd to 75,000 by the 1890s. The Keith post office operated near ranch headquarters between 1882 and 1884; between 1884 and 1895, the post office was known as Mingusville. It was at Mingusville that the Northern Pacific Railroad built a stockyard that allowed Wibaux to ship his cattle to market. By 1893, residents had begun to call the settlement Wibaux, and the post office changed its name to Wibaux in 1895. Wibaux County was formed in 1914, with Wibaux as the county seat. St. Peter’s Catholic Church, the Pierre Wibaux House, and the Wibaux Commercial Historic District are listed in the National Register.Personal NamesWibaux, PierreOther Name(s)KeithMingusvilleContributing InstitutionMontana Historical Society Library and ArchivesGeolocation[1] Elevation2649 ft. CountyWibaux County