Manatee County is a county in the U.S. state of Florida. As of the 2020 US Census, the population was 399,710. Manatee County is part of the Bradenton-Sarasota-Venice, Florida Metropolitan Statistical Area. Its county seat and largest city is Bradenton. The county was created in 1855 and named for the Florida manatee, Florida's official marine mammal. Features of Manatee County include access to the southern part of the Tampa Bay estuary, the Sunshine Skyway Bridge, and the Manatee River. History Prehistoric history The area now known as Manatee County had been inhabited by Native Americans for thousands of years. Shell middens and other archaeological digs have been conducted throughout the county including at Terra Ceia and at Perico Island. These digs revealed materials belonging to peoples from the Woodland period. European exploration and early settlement Some historians have suggested that the southern mouth of the Manatee River was the landing site of the De Soto Expedition. Due to conflict during the Patriot War and First Seminole War, many African Americans fled north Florida and some settled in modern day Bradenton. The settlement they founded on the Manatee River was called Angola. By 1819, the population of Angola possibly reached as high as 600-700 people. The area was opened to settlement in 1842 with the passing of the Armed Occupation Act. Early settlements included the Manatee Colony led by Colonel Samuel Reid, which numbered thirty one individuals both black and white. Other prominent early settlers were Joseph and Hector Braden who moved into an area near the Manatee River in 1842. The two had lost their land for their plantations in Northern Florida during the Panic of 1837. They were said to have heard that there was abundant land in the area. The brothers moved into a log cabin 5 miles north of the mouth of the Manatee River. Four years later Hector had drowned while trying to cross the Manatee River on his horse during a hurricane. Despite this tragic event, Joseph decided he would still build his sugar plantation, the Braden sugar mill at the mouth of the Manatee River and the Braden River. He later built a dock where Main Street was and fortified the area near his house building a stockade. A few years later in 1851, he would build the Braden Castle, which was made out of tabby and served as his residence. In Spring of