1787. Toll roads connecting Baltimore with Frederick, Westminster, Hanover, and York authorized by General Assembly.
1818. Westminster incorporated.
1833. Manchester incorporated.
1836. Taneytown incorporated.
1837. Carroll County formed from western Baltimore County and eastern Frederick County; named for Charles Caroll of Carrollton (1739-1832).
1839. Baltimore & Ohio Railroad extended line through Mount Airy Cut.
1843. New Windsor incorporated.
1846, Aug. 8. Frank Brown (1846-1920), Governor of Maryland, born at “Brown’s Inheritance”, near Sykesville.
1850. Calvert College opened at New Windsor.
1862, Sept. Confederate cavalry entered Westminster.
1863. Westminster Public Library opened.
1863, June. Gen. George G. Meade (1815-1872) established his Union headquarters at Taneytown.
1863, June 29. Corbit's Charge, Union and Confederate cavalry fought at Westminster.
1863, June 29. Union troops encamped at Uniontown.
1863, June 30. Confederate cavalry stopped at Union Mills on their way north to Pennsylvania.
1863, June 30. Union troops encamped at Union Mills.
1863, July. Westminster served as main supply depot for Union troops at Gettysburg.
1868. Western Maryland College (now McDaniel College) chartered by Methodists (organized 1866).
1872. Union Bridge incorporated.
1885. Townshend Cooper lynched in Westminster.
1888. Hampstead incorporated.
1894. Mount Airy incorporated.
1894. New Windsor College opened.
1904. Sykesville incorporated.
1948, Dec. 5. Whittaker Chambers removed microfilm from hollowed out pumpkin on his Pipe Creek Farm for U.S. House of Representatives UnAmerican Activities Committee.
1976. Carroll Community College opened in Westminster as a branch of Catonsville Junior College.
2004, March 2. Electronic voting system used during primary elections at polling places and for absentee ballots in all counties and Baltimore City.
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