Three Forks is a town of roughly 1,989 people in Gallatin County, sitting at 4,075 feet where the Jefferson, Madison, and Gallatin rivers converge to form the Missouri River — earning it the title “Birthplace of the Missouri.” Lewis and Clark named the three rivers here on July 27, 1805, and Sacagawea was captured near this site five years earlier. Founded in 1908 by John Q. Adams as a division point for the Milwaukee Road railroad, Three Forks retains its small-town railroad character while absorbing spillover demand from Bozeman, just 31 miles east on I-90. The historic Sacajawea Hotel (1910) anchors downtown, and Missouri Headwaters State Park sits four miles away. This guide breaks down housing, income, affordability, and employment data so you know what it actually costs to live here. For a broader overview of the town, see our Three Forks guide.
At a Glance
Housing Costs
Housing is the single largest expense in Three Forks and a category that has moved dramatically in recent years thanks to Bozeman spillover. The median home value stands at $536K according to Zillow's Home Value Index as of January 2026. The U.S. Census Bureau's American Community Survey puts the figure at $382K — a 40% gap that reflects rapid appreciation driven by buyers priced out of Bozeman seeking value along the I-90 corridor. The median list price of $680K sits well above the Zillow estimate, reflecting new construction premiums and sellers pricing to the Bozeman-adjacent market. Three Forks ranks in the 87th percentile among Montana towns — well above average, pulled upward by Gallatin County demand.
Renters pay a median of $1K per month. Rents sit at the 73rd percentile — above the state median, reflecting Gallatin County's tight rental market. At $1,263 per month, rent in Three Forks is substantially below Bozeman rates but well above what you'd pay in Butte or Anaconda. The 1.8% vacancy rate means available rentals are exceptionally scarce — with only 895 total housing units serving roughly 2,000 people, there is essentially no slack in the system. For a detailed look at market trends, inventory, and buying conditions, see our Three Forks housing market guide.
Income & Affordability
The median household income in Three Forks is $80K, placing the town at the 69th percentile among Montana communities. That $80K figure is strong for a small Montana town and reflects the Bozeman commuter effect — many residents earn Bozeman wages while living in Three Forks's more affordable housing. Industrial employers like CRH Cement and Imerys Talc also contribute solid blue-collar incomes. The affordability ratio — median home value divided by median household income — is 6.7. The commonly cited national benchmark is 3.0 to 5.0. A ratio of 6.7 puts Three Forks above the comfortable range but meaningfully below Bozeman's ratio of roughly 10, making it a realistic alternative for households priced out of the college town.
For comparison, Belgrade — another Bozeman-adjacent community — has similar pricing pressure but less historic character. Butte, 64 miles west, offers a ratio closer to 4.4 with much cheaper housing but fewer employment connections to Bozeman. Three Forks's 6.7 ratio means housing is stretched relative to incomes but still within reach for dual-income households, especially with Montana's lack of a state sales tax providing meaningful relief on everyday expenses like groceries, clothing, and household goods.
Three Forks's location on I-90 makes the 31-mile Bozeman commute practical for daily employment, while the 64-mile drive to Butte keeps that city's services and airport within reach. The town's own commercial district along Main Street handles most daily needs without requiring the drive east.
Monthly Budget Estimate
While individual budgets vary widely, here is a rough breakdown of monthly costs for a household earning Three Forks's median income:
| Category | Estimated Monthly | % of Income |
|---|---|---|
| Housing (rent or mortgage) | $1,263 | 19% |
| Utilities | $220 | 3% |
| Groceries | $500 | 7% |
| Transportation | $400 | 6% |
| Healthcare | $330 | 5% |
Estimates based on local medians and regional cost indices. Actual costs vary. Transportation costs are higher in Three Forks if commuting to Bozeman (31 mi each way), and the absence of a state sales tax reduces everyday expenses compared to most U.S. states.
Employment & Economic Context
Three Forks's economy blends Bozeman-corridor commuter employment with local industrial and service jobs. The leading sector is Retail, which accounts for 19.4% of employment. CRH Cement Plant and Imerys Talc Mill are major industrial employers providing well-paying blue-collar jobs uncommon in most small Montana towns. The next largest sectors are Construction (17.2%) and Education & Healthcare (13.2%).
Tourism & Hospitality at 9% of employment reflects Missouri Headwaters State Park, Lewis & Clark Caverns (16 mi), the Sacajawea Hotel, and the town's position as a gateway to outdoor recreation along the Jefferson and Madison rivers. The unemployment rate is 1.1% — essentially zero, indicating a labor market so tight that employers struggle to fill positions. Labor force participation stands at 67% — high, reflecting a working-age population that is overwhelmingly employed. For the full industry breakdown, see our Three Forks jobs and economy guide.
How Three Forks Compares
Three Forks occupies a distinct niche in the Bozeman-adjacent market. Its median home value ($536K) is well below Bozeman ($703K) but above working-class towns like Butte ($220K) and Anaconda ($280K). The affordability ratio of 6.7 sits between Bozeman's ~10 and Butte's 4.4 — not cheap, but not the severe stress that makes homeownership impossible on local wages.
Where Three Forks stands out is its combination of Bozeman-commutable location, genuine historic character (the 1910 Sacajawea Hotel, railroad-era downtown), and the unique distinction of sitting at the birthplace of the Missouri River. Belgrade offers a similar commuting proposition but with suburban sprawl rather than small-town identity. Manhattan and Amsterdam are smaller and more agricultural. For buyers looking at the Gallatin Valley's western fringe, Three Forks offers the most distinctive sense of place — a railroad town at the headwaters of America's longest river, with I-90 access and proximity to Lewis & Clark Caverns, Madison Buffalo Jump, and Missouri Headwaters State Park.
Key Takeaways
- Housing is the biggest cost driver, with a 87th percentile ranking among Montana towns and a 40% Census-to-Zillow appreciation gap showing aggressive Bozeman-spillover price growth.
- The affordability ratio of 6.7 is above the national comfort zone but well below Bozeman (~10), keeping Three Forks accessible to dual-income households and Bozeman commuters.
- Rent at $1,263/month is 73rd percentile statewide — not cheap, but substantially less than Bozeman, reflecting Gallatin County demand in a tiny 895-unit housing stock.
- The economy benefits from a 1.1% unemployment rate, industrial employers (CRH Cement, Imerys Talc), and Bozeman commuter incomes that push the median household income to $80K (19.4% Retail, 17.2% Construction, 13.2% Education & Healthcare).
- Montana's zero state sales tax and Three Forks's I-90 access to Bozeman (31 mi) and Butte (64 mi) keep everyday costs manageable, while Missouri Headwaters State Park and Lewis & Clark Caverns add recreation value unmatched by other small Gallatin County towns.