Cincinnati Area Population 2024. This page reports on the population distribution in the cincinnati area, both in terms of raw head counts, and in terms of population density per square mile. Cincinnati is currently growing at a rate of 0.16% annually and its population has increased by 0.64% since the most recent census , which recorded a population of 309,601 in 2020.

Above charts are based on data from the u.s. It is also the county seat of hamilton county.