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Sour Dough Flat

Ghost town · Blaine County, Montana

Saddle Rock quadrangle, USGS topographic map (1985, 1:24,000)
Saddle Rock quadrangle, USGS topographic map (1985, 1:24,000) · U.S. Geological Survey, Historical Topographic Map Collection · Public domain

Sour Dough Flat is a ghost town in Blaine County, Montana. It is one of 19 former communities in Blaine County on the federal names register. That ranks the county 5th among the 55 Montana counties with a vanished settlement on record.

The U.S. Geological Survey lists Sour Dough Flat as a historical populated place on the Nolan Reservoir 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 47.9994° N, 109.3752° W.

Key facts

USGS quadrangleNolan Reservoir
Elevation3,702 ft
Nearest living townParker School, MT
Distance to it23.8 miles
GNIS feature ID1722413
Coordinates47.99943, -109.37518

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What's there now

Sour Dough Flat is no longer a community in its own right. The nearest living town is Parker School, MT (population 357), about 23.8 miles away in a straight line, and the site sits at roughly 3,702 feet above sea level. Much of the land around former townsites is private; check access before you visit.

Nearby places

Questions

Where is Sour Dough Flat?

Sour Dough Flat is in Blaine County, Montana, at 47.9994, -109.3752.

How many ghost towns are in Blaine County?

Blaine County, Montana has 19 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.