Princeton is the county seat and largest city located in Mercer County, Missouri, in the United States. It serves as a local hub within its region and maintains a small community population.
The city's population was recorded at 1,007 during the 2020 census, reflecting a decrease from the 1,166 residents reported in the 2010 census. Additionally, Princeton is notable as the birthplace of the famous frontierswoman Calamity Jane.