- Bartow City is a city located in Polk County, Florida, United States. It is the county seat of Polk County and has a population of approximately 20,147 residents. Bartow City is known for its historic downtown area, which features several preserved buildings from the late 19th and early 20th centuries. The city is also home to several parks, such as Mary Holland Park and Mosaic Park, offering recreational activities for residents and visitors. Bartow City is served by the Polk County Public School District, providing education from elementary to high school levels. Additionally, the city has various local businesses, restaurants, and cultural attractions that contribute to its vibrant community.