Cincinnati Ohio Population 2024 Census. Quickfacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more. Access demographic, economic and population data from the u.s.

 — early voting at the hamilton county board of education’s office on smith road kicks off oct. From 2010 to 2020, cincinnati’s population increased by 12,513 (4.21%), according to census bureau’s population estimates program.