Fairfield ZIP Code List — Teton County, MT

About Fairfield, MT

Fairfield, Montana is a small agricultural city located in Teton County in the north-central part of the Big Sky State. Served by a single ZIP code, 59436, Fairfield sits in the heart of one of Montana's most productive farming regions and offers residents a close-knit rural lifestyle surrounded by stunning natural scenery. The city is reachable by telephone through the 406 area code, which serves the entire state of Montana.

Location & geography

Fairfield is situated in the Sun River Valley of north-central Montana, nestled between the Rocky Mountain Front to the west and the broad Montana plains stretching to the east. The city lies roughly 35 miles southeast of Choteau, about 40 miles northwest of Great Falls, and is within reasonable driving distance of Browning to the north and Augusta to the south. The surrounding landscape covers a total area of approximately 248.98 square miles, of which 246.94 square miles is land and 2.04 square miles is water, with the Sun River and associated irrigation canals contributing to the area's water features.

Community & economy

Fairfield has a strong agricultural identity, with farming and ranching forming the backbone of the local economy and daily life for its residents. The area is widely celebrated for its canola and small grain production, and the community supports a variety of businesses, grain elevators, and services catering to the farming industry. Residents enjoy a quiet, rural pace of life with access to outdoor recreation, local schools, and community events that reinforce Fairfield's tight-knit character.

Transportation

Fairfield is primarily accessed via U.S. Highway 89, which runs through the area and connects the city to Great Falls to the southeast and Choteau to the northwest, making it an important corridor for both residents and agricultural commerce. The nearest commercial airport is Great Falls International Airport, located approximately 40 miles to the southeast, offering regional and national flights for travelers. Most residents rely on personal vehicles for daily transportation, as public transit options in this rural area are limited.

History

Fairfield was established in the early twentieth century as homesteaders and farmers moved into the Sun River Valley, drawn by the region's fertile soils and the promise of irrigated agriculture supported by nearby water projects. The construction of irrigation infrastructure in the area played a significant role in enabling the large-scale farming that has defined Fairfield's economy for generations. Over the decades, the community has remained steadfastly agricultural, weathering the broader shifts in rural America while maintaining its identity as a center of Montana farming life.

Did you know?

Fairfield proudly calls itself the 'Canola Capital of Montana,' a distinction that reflects its outsized contribution to canola oil production in the state and broader region. The brilliant yellow canola fields that blanket the landscape around Fairfield each summer have become a striking visual landmark, attracting photographers and travelers along the Rocky Mountain Front.