Montgomery County marks the 250th anniversary of its founding on September 6, 2026. The county was established in 1776 when the Maryland General Assembly divided Frederick County into three counties, naming the new county after Revolutionary War General Richard Montgomery. The county is highlighting notable moments from its history across transportation, science, technology, and civil rights.
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Source: Montgomery County, MD, “Montgomery County Celebrates 250th Anniversary”, received Sep 6, 2026.
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