Population Of Manatee County Fl 2025 Demographics. The median age in manatee county was 49 in 2021. Census data for manatee county, fl (pop.

Manatee county, florida’s estimated 2024 population is 453,021 with a growth rate of 2.7% in the past year according to the most recent united states census data. This page reports on the population distribution in manatee county, both in terms of raw head counts, and in terms of population density per square mile.