There is one unique ZIP code in Fallon, Montana and it is 59326. Area code: 406.
1
ZIP codes
363.46
sq mi land
3.38
sq mi water
406
area code
Fallon, MT ZIP code map
About Fallon, MT
Fallon is a small community located in Prairie County in the expansive plains of eastern Montana, served by the single ZIP code 59326. Situated in a region defined by wide-open grasslands and the rugged beauty of the Montana high plains, Fallon offers residents and visitors a glimpse into authentic rural Western life. The community is a quiet but proud part of Montana's agricultural heartland, where ranching traditions and tight-knit neighborly bonds remain central to everyday life.
Location & geography
Fallon is located in Prairie County in southeastern Montana, positioned along the valley of the Yellowstone River corridor region where rolling prairies stretch toward the horizon in every direction. Nearby communities include Terry, Montana, approximately 20 miles to the west along U.S. Highway 10 and Interstate 94, while Miles City lies roughly 60 miles to the west and serves as the nearest regional hub. The city encompasses a substantial 363.46 square miles of land area alongside 3.38 square miles of water area, reflecting the presence of creeks, stock ponds, and small waterways that thread through the surrounding ranchlands.
Community & economy
Fallon embodies the self-reliant spirit of rural eastern Montana, where agriculture — primarily cattle ranching and wheat farming — forms the backbone of the local economy and daily life. The community is small and closely connected, with residents depending on one another and on larger nearby centers like Miles City for expanded retail, medical, and educational services. Life in Fallon moves at a deliberate pace shaped by the seasons, livestock cycles, and the vast open landscape that surrounds the town on all sides.
Transportation
Fallon is accessible via Interstate 94, the primary east-west corridor through southeastern Montana that connects the region to Miles City to the west and Glendive to the east. U.S. Highway 10 also traces the historic route through this part of the state, linking smaller communities across the Yellowstone River valley. The nearest commercial air service is available at Miles City Airport (MLS) in Miles City, approximately 60 miles to the west, making private vehicle travel the primary mode of transportation for Fallon residents.
History
Prairie County, in which Fallon sits, was carved out of Custer and Dawson counties in 1915, and the communities within it grew largely in response to the expansion of the railroad and the promise of homesteading on Montana's eastern plains. The region attracted settlers in the late 19th and early 20th centuries who came to farm and ranch the fertile river valleys and grasslands. Like much of eastern Montana, the area weathered the hardships of the Dust Bowl era and declining homestead populations, with ranching emerging as the enduring foundation of the local economy.
Did you know?
Fallon's land area of over 363 square miles means the community's footprint rivals that of many mid-sized American cities in physical size, yet it remains one of the least densely populated areas in an already sparsely settled state. This dramatic ratio of land to people makes Fallon a compelling example of the wide-open spaces that define Montana's identity as "Big Sky Country."
