129 State Route 79

One of America's Smallest Counties — and One of Its Most Unusual Housing Markets

Treasure County, Montana sits in the heart of the Yellowstone River valley, a stretch of high plains and badlands so sparsely populated that its 761 residents are outnumbered by the cattle they raise. With a population density of 0.78 people per square mile, this is genuinely one of the emptiest jurisdictions in the continental United States — smaller than most apartment complexes, governing a territory larger than many eastern counties combined. That extreme scale inversion shapes everything about how this place works economically.

What's immediately striking is the affordability picture, which runs almost perfectly counter to the Montana narrative of the last decade. While Bozeman and Missoula have become symbols of the rural gentrification crisis — mountain towns priced out of reach by remote workers and second-home buyers — Treasure County offers median home values of $215,300, well below both the state's rising averages and the national benchmark of $320,000. At roughly 2.9x the median household income, homes here remain attainable in a way that feels almost anachronistic in 2024 Montana.

The Income Paradox

The data contains one genuinely jaw-dropping figure: a mean household income of over $36 million. This is almost certainly a statistical artifact of extreme concentration — when your county has only 382 households, a single ranch operation, agricultural estate, or mineral rights holding can distort the mean into something absurd. The median income of $73,036 is the more honest number, and it tracks closely with national benchmarks. The Gini index of 0.486, however, is high — suggesting meaningful inequality even within this tiny community, likely reflecting the gap between working ranch hands and land-owning families whose wealth is tied up in acreage rather than wages.

Key Statistics

Stat	Value	Context
Median Home Value	$215,300	Below national avg of $320,000 — a rare Montana affordability story
Vacancy Rate	20.3%	Signals seasonal use and outmigration pressure
Median Age	53.4	Among the oldest county profiles in the state
Gini Index	0.486	High inequality despite small, seemingly homogeneous population

An Aging, Remote, and Surprisingly Wired Community

The median age of 53.4 tells a quiet story of demographic hollowing. With only 15.8% of residents under 18 and over 22% aged 65 or older, Treasure County skews heavily toward the retirement end of the spectrum — a pattern common to agricultural counties that lost young people to cities over decades without replacement. The 20.3% housing vacancy rate reinforces this: many of those empty units are likely seasonal properties or homes left behind by families who departed.

Yet the digital picture is more modern than the demographics suggest. Computer access sits at 94%, and 20.6% of residents work from home — a figure that rivals urban tech corridors. In a county with zero public transit and where driving alone is virtually the only commute option, remote work isn't a lifestyle choice so much as a structural necessity.

The 12.6% limited English figure is notable and likely reflects agricultural labor drawn to the region's ranching operations — a demographic reality common across the rural Yellowstone corridor.

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What makes Treasure County unique? It is one of the least populous counties in the United States, with fewer than 800 residents spread across nearly 1,000 square miles of Montana high plains. Its combination of genuine housing affordability, extreme remoteness, and aging population makes it an outlier even within rural Montana.

Is Treasure County, Montana a good place to buy property? For buyers seeking low prices and solitude, the fundamentals look sound — homes are affordable relative to income, rent burden is essentially non-existent, and 82.5% of the housing stock is single-family. The caveat is a high vacancy rate and an aging population base, which suggests limited appreciation upside compared to growth markets elsewhere in the state.

Why is the vacancy rate so high in Treasure County? A 20.3% vacancy rate in a county this small likely reflects a combination of outmigration, seasonal or recreational properties along the Yellowstone River corridor, and the general demographic contraction that affects many of Montana's most rural agricultural counties.