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Foundation

Ghost town · Custer County, Montana

Foundation Spring quadrangle, USGS topographic map (1981, 1:24,000)
Foundation Spring quadrangle, USGS topographic map (1981, 1:24,000) · U.S. Geological Survey, Historical Topographic Map Collection · Public domain

Foundation is a ghost town in Custer County, Montana. It is one of 8 former communities in Custer County on the federal names register. That ranks the county 23rd among the 55 Montana counties with a vanished settlement on record.

The U.S. Geological Survey lists Foundation as a historical populated place on the Foundation Spring topographic quadrangle: the name is no longer in official use for a community, whether the settlement was abandoned, absorbed into a neighbouring town or renamed. The recorded location is 46.2594° N, 104.9611° W.

Key facts

USGS quadrangleFoundation Spring
Elevation3,162 ft
Nearest living townIsmay, MT
Distance to it18.5 miles
GNIS feature ID1716878
Coordinates46.25945, -104.96108

Open the location on a map

What's there now

Foundation is no longer a community in its own right. The nearest living town is Ismay, MT (population 1), about 18.5 miles away in a straight line, and the site sits at roughly 3,162 feet above sea level. Much of the land around former townsites is private; check access before you visit.

Nearby places

Questions

Where is Foundation?

Foundation is in Custer County, Montana, at 46.2594, -104.9611.

How many ghost towns are in Custer County?

Custer County, Montana has 8 ghost towns on record at Wayfarrow.

Sources and licences

Facts marked "approximately" carry an uncertain date in the source. Text on this page is generated from the sources above; no encyclopedia prose is copied. Last updated 2026-11-05.