Holmes Beach is a city on Anna Maria Island in Manatee County, Florida, United States. As of the 2020 census, it had a population of 3,010, d…Holmes Beach is a city on Anna Maria Island in Manatee County, Florida, United States. As of the 2020 census, it had a population of 3,010, down from 3,836 at the 2010 census. It is part of the North Port-Bradenton-Sarasota, Florida Metropolitan Statistical Area. The city occupies the central part of Anna Maria Island and is one of three municipalities on the island. The others are Bradenton Beach in the south and Anna Maria in the north.