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Sullivan County, Pennsylvania: America's Emptiest Housing Market Has a Surprise Inside

There are counties in America with tight inventory, bidding wars, and anxious buyers refreshing listing alerts at midnight. Then there is Sullivan County, Pennsylvania — where 54.7% of all housing units sit vacant. That figure isn't a data anomaly. It's the defining economic and demographic fact of one of the least densely populated counties east of the Mississippi, home to just 13 people per square mile and fewer than 6,000 residents total.

But here's the surprise buried in that vacancy rate: this is not a dying town. It's a vacation and seasonal retreat market wearing a rural Pennsylvania costume.

The Seasonal Ghost Town That Commands Real Prices

Sullivan County sits in the Pennsylvania Wilds, anchored by the Loyalsock State Forest and Worlds End State Park. The Delaware River headwaters and endless ridge-and-valley terrain draw hunters, fly fishermen, hikers, and second-home buyers from the New York metro corridor — people who don't live here year-round but absolutely do bid up the properties they want. That explains the most jaw-dropping number in the dataset: a 67.4% year-over-year price increase, pushing the average sale price to $306,271. This isn't a booming local economy driving prices up. It's out-of-market demand colliding with genuinely thin inventory.

The wide spread between the 10th percentile price ($53,500) and the 90th ($566,000) tells the whole story: distressed cabins and aging farmhouses coexist with premium retreats commanding half a million dollars — often on the same road.

Key Statistics

An Aging, Car-Dependent Permanent Population

The people who do live here full-time are older, long-rooted, and working-class. At a median age of 56.1 and with nearly a third of residents over 65, Sullivan County is aging faster than almost anywhere in the state. Only 10.2% of residents are under 18 — a generational inversion that hints at long-term demographic pressure. Labor force participation at 52.3% reflects early retirement and disability (15.7% disability rate) rather than economic despair alone. The county's 6.4% unemployment rate is elevated, but in a place this rural, the informal and seasonal economy absorbs much of what official statistics miss.

College attainment is low — just 12.4% hold a bachelor's degree versus roughly 35% nationally — and virtually everyone drives alone to work. Public transit is essentially nonexistent at 0.1% usage.

FAQs

What makes Sullivan County, PA unique? Sullivan County is one of the most sparsely populated counties in the entire eastern United States, yet it's experiencing a vacation-home price surge driven by second-home buyers from New York and New Jersey seeking access to the Pennsylvania Wilds. More than half its housing units are vacant on any given census day — not from abandonment, but from seasonal use.

Is Sullivan County PA a good place to buy a vacation home? The dramatic price appreciation (+67%) signals strong demand, but the thin market (only 76 sales in 12 months across 5,600 units) means valuations can swing sharply on just a handful of transactions. Buyers should treat pricing here as volatile and do careful due diligence on well water, broadband (14% of residents lack internet), and road access before purchasing.

Why is Sullivan County's population so old? Younger residents have largely migrated toward regional employment centers like Williamsport or the Scranton/Wilkes-Barre corridor for decades, leaving behind an older, property-owning population. With school enrollment at just 12.4% and children making up barely one in ten residents, the demographic trend shows little sign of reversing without significant economic diversification.