Caesarea, OntarioCaesarea is an unincorporated community in Ontario, Canada. It is recognized as a designated place by Statistics Canada.HistoryCaesarea was named after a local landowner after originally being named Lasherville. The community's post office was opened in 1951.DemographicsIn the 2021 Census of Population conducted by Statistics Canada, Caesarea had a population of 816 living in 339 of its 401 total private dwellings, a change of from its 2016 population of 823. With a land area of, it had a population density of in 2021.