Hamilton County Hamilton County is located in southwestern Ohio, home to the city of Cincinnati. It is bordered by Butler County to the north, Clermont County to the east, and the Ohio River to the south, with a population of 827,058. As a cultural and economic center, the county is home to major attractions like the Cincinnati Museum Center at Union Terminal.
Hamilton County is faring about the same as the average county in Ohio for Health Outcomes and slightly better than the average county in Ohio for Health Factors, according to County Health Rankings & Roadmaps.
