Myakka City (also Miakka, Miakka City, or Myakka) is an unincorporated community in southeastern Manatee County, Florida, United States. It lies along State Road 70 near the city of Bradenton, the county seat of Manatee County. Its elevation is 43 feet (13 m), and it is located at 27°20′59″N 82°9′41″W (27.3497671, -82.1614780). Although Myakka is unincorporated, it has a post office, with the ZIP code of 34251; the ZCTA for ZIP code 34251 had a population of 6,351 at the 2010 census. up from 4,239 in 2000.