Crime Scene & Biohazard Cleanup Near West Fallon Fallon, MT

Fallon is an unincorporated community in Prairie County, in the plains of far eastern Montana, whose name the Census Bureau uses for the surrounding census-designated place (CDP).

Fallon takes its name from nearby O'Fallon Creek, which was named for Benjamin O'Fallon, a nephew of Captain William Clark who served as Indian agent for the Upper Missouri region from 1823 to 1827.

The Northern Pacific Railroad established a station named Fallon in 1883, and rancher Cyrus Mendenhall became the community's first postmaster in 1884.

The Fallon CDP had a population of 122 at the 2020 census, down from 164 at the 2010 census; the census boundary reaches beyond the townsite, so the count may include people living well outside the town itself.

In the late 1910s and early 1920s, Fallon supported two grain elevators and a bank, grocery store, hardware store, garage, saloon and newspaper, and it served as a railhead for shipping cattle east.

Today the Fallon economy depends on the surrounding cattle and horse ranches and dryland farming.

Prairie County, created by the Montana Legislature in 1915 with its seat at Terry, counted only 1,088 residents at the 2020 census, making it the fifth-least populous county in Montana.

Fallon sits at an elevation of about 2,205 feet and has its own ZIP code, 59326.