Sangamon County is a county located in the center of the U.S. state of Illinois. According to the 2020 census, it had a population of 196,343. Its county seat and largest city is Springfield, the state capital.
Sangamon County is included in the... Wikipedia
Cities: Springfield, New Berlin, Riverton, and more
Population: 194,534 (2022)
Founded: 1821
Largest city: Springfield
Named for: Sangamon River