- Community founded January 4, 1793, on a Spanish land grant to Louis Lorimier
- Lewis and Clark stop at Lorimier’s Post & Cape Rock on the Voyage of Discovery, November 23, 1803
- Town platted 1806 by Bartholomew Cousins, Secretary to Louis Lorimier
- Town incorporated 1808 (prior to Missouri statehood)
- Town reincorporated 1843 as a City by special act of the Missouri Legislature
- City Charter (Constitutional Home Rule) adopted by electorate in November 1981, effective April 12, 1982. Charter amendments adopted by electorate in April 1996
- Ward representation adopted by electorate in August 1993.
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