The Sunflower State Capital is Topeka, a city located in the northeast of Kansas. It is the state capital and the county seat of Shawnee County. Topeka is the fifth-largest city in the state and has a population of 127, 473 as of the 2020 census. The city is known for its many historical sites, including the Brown v. Board of Education National Historic Site, the Kansas State Capitol, and the Topeka Zoo.