The Loneliest Town in Idaho: Cascade, 96 Miles From the Nearest City
Cascade, ID — population 3,329, Valley County — is the most isolated inhabited place in Idaho. The nearest city of 10,000+ residents is Hamilton, MT, sitting 96 straight-line miles away — across the state line in MT. Idaho has 209 towns under 10,000 residents; Cascade is the most isolated among them.
The link opens the SimpleMapLab Map Radius Tool with a 50-mile circle drawn around Cascade. Try expanding the radius to see how far you have to look before encountering any 10,000+ city — the answer is roughly 96 miles in the direction of Hamilton.
Why this happened
Idaho's loneliest town sits in the central mountain wilderness — the largest contiguous roadless wilderness in the lower 48 states. Communities like Stanley, Atlanta, or Yellow Pine are surrounded by national forest and wilderness areas; the drives to any qualifying city are 100+ miles on winding mountain roads.
Central Idaho is the geographic anomaly of the lower 48: a region the size of Belgium with population around 5,000. The Frank Church–River of No Return Wilderness alone covers 2.4 million acres. Towns inside this region — historically mining camps or ranch settlements — are some of the most genuinely isolated places in the contiguous United States.
Idaho's 5 most isolated towns
The top 5 most-isolated inhabited places in Idaho, sorted by distance to the nearest 10,000+ city.
| # | Town | Pop. | Distance to nearest 10K+ | Nearest city |
|---|---|---|---|---|
| 1 | Cascade | 3,329 | 96 mi | Hamilton, MT |
| 2 | Tendoy | 191 | 90 mi | Hamilton, MT |
| 3 | Lemhi | 104 | 87 mi | Hailey, ID |
| 4 | Mccall | 7,750 | 84 mi | Payette, ID |
| 5 | Salmon | 6,590 | 81 mi | Hamilton, MT |
How Idaho compares
The states ranked closest to Idaho on this metric. Click any for the dedicated breakdown.
Draw your own radius
Open a 50-mile circle around Cascade →
Try the 100-mile radius to see whether a major city falls inside — for Cascade, it doesn't, because the nearest qualifying city (Hamilton, MT) sits 96 miles away.
Methodology (brief)
We aggregate the US Census ZCTA dataset by postal city, treating any (postal city, state) pair with ≥ 50 residents as a town. Anchor cities are places with ≥ 10,000 residents. For every Idaho town below the anchor threshold, we compute the straight-line distance to every anchor city in the US (cross-state distances count). The town with the largest minimum distance is Idaho's loneliest. Full methodology on the hub page.
Suggested citation: SimpleMapLab (2026). The Loneliest Towns in America: Idaho. Part of the Most Remote Inhabited Places study. Retrieved from https://www.simplemaplab.com/studies/most-remote-places/idaho. CC-BY 4.0.