Montgomery County was established on Sept. 6, 1776, and celebrates its 250th anniversary this year. Throughout September, the County will highlight historical people, places, and events via social media. County Executive Marc Elrich and Chief Administrative Officer Rich Madaleno are among officials marking the milestone.
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Source: Press Release - Montgomery County, MD, “Montgomery County Marks 250th Anniversary with Weekend of Community Events and Reflection;County’s 250th Birthday on Sept. 6 Will be Followed by Labor Day Parades in Kensington and Gaithersburg; County Will Also Commemorate 25th Anniversary of the Sept. 11 Terrorist Attacks”, received Sep 4, 2026.
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