Palm Coast is a city in Flagler County, Florida, United States. As of the 2020 United States Census, the population was 89,258, an increase …Palm Coast is a city in Flagler County, Florida, United States. As of the 2020 United States Census, the population was 89,258, an increase of almost 200% since the 2000 count of 32,832. The population was estimated to be 98,411 as of July 1, 2022. It is the most populous city in Flagler County. Palm Coast is part of the Deltona–Daytona Beach–Ormond Beach, FL metropolitan statistical area.