1787. Toll roads connecting Baltimore with Frederick, Westminster, Hanover, and York authorized by General Assembly.
1818. Westminster incorporated.
1833. Manchester incorporated.
1825, Sept. 13. William Henry Rinehart (1825-1874), sculptor, born at Union Bridge.
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.
1851-1866. Calvert College founded 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 under Maj. Gen. Winfield Scott Hancock encamped at Uniontown on route to Gettysburg.
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 1. Union troops under Maj. Gen. Winfield Scott Hancock marched through Taneytown on route to Gettysburg.
1863, July. Westminster served as main supply depot for Union troops at Gettysburg.
1863, July 29. Union Gen. David McM. Gregg's division passed through New Windsor at night on route to Westminster.
1868. Western Maryland College (now McDaniel College) chartered by Methodists (organized 1866).
1869. Carroll County Fair began at Westminster.
1872. Union Bridge incorporated.
1876-1912. New Windsor College founded at New Windsor.
1885. Townshend Cooper lynched in Westminster.
1888. Hampstead incorporated.
1894. Mount Airy incorporated.
1899, Nov. Maryland Collegiate Institute opened at Union Bridge.
1904. Sykesville incorporated.
1912. Maryland Collegiate Institute moved to New Windsor and merged with New Windsor College to form Blue Ridge College.
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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