Comertown is an unincorporated community in northeastern Sheridan County, Montana, United States.

[2] Although the land around Comertown attracted numerous homesteaders during the first years following the railroad's completion, the region proved to be unsuited for intensive agricultural use, and by the 1920s Comertown was in decline.

The post office at Comertown operated from November 14, 1914, to June 30, 1957.

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