Sangamon County, Illinois

Sangamon County is right in the middle of Illinois. Springfield, the state capital, is the county’s major destination. This place is closely tied to politics and Abraham Lincoln, with the Old State Capitol and Lincoln’s home drawing visitors from all over.

But there’s more to the county than government buildings. Outside the city, rich farmland stretches toward the horizon. In Springfield, you might see suits and ties, while the smaller towns are more likely to feature coveralls and work boots.

Lake Springfield provides plenty of opportunities for boating and fishing. The local economy is diverse, with government, healthcare, and agriculture all playing important roles. Sangamon County is Illinois in miniature, with a little bit of everything that makes up the Prairie State.

CategoryDetails
County NameSangamon County
County SeatSpringfield
EtymologyNamed after the Sangamon River, which runs through the county
Cities, Towns, and CommunitiesSpringfield, Chatham, Riverton, Auburn, and several smaller communities
Interstates and HighwaysInterstate 55, Interstate 72, U.S. Route 36, U.S. Route 66 (historic)
FIPS Code17-167
Total Area (Land and Water)867 square miles (land: 846 sq mi, water: 21 sq mi)
Adjacent Counties (and Direction)Menard County (North), Logan County (Northeast), Macon County (East), Christian County (Southeast), Montgomery County (South), Macoupin County (South), Morgan County (West), Cass County (Northwest)
Time ZoneCentral Time Zone (CT)
PopulationApproximately 210,000
StateIllinois
Coordinates39.7359° N, 89.5290° W
Major LandmarksIllinois State Capitol, Abraham Lincoln Presidential Library and Museum, Lincoln Home National Historic Site

PHYSICAL MAP

Sangamon County Topographic Map

Mostly flat prairie with gentle slopes is typical of Sangamon County. Springfield sits near the center of the county.

SATELLITE IMAGERY

Sangamon County Satellite Map

Springfield’s urban sprawl breaks up the endless farmland. Interstates 55 and 72 cut through the county, providing major routes in several directions.

OUTLINE MAP

Sangamon County Blank Map

Sangamon County is a near-perfect rectangle, with straight borders on all sides. The Sangamon River forms part of its eastern edge, but no other major rivers define the county’s boundaries. It doesn’t touch another state.

Illinois County Map

Illinois map showing boundaries and locations.

Ready to explore Illinois? Discover counties full of surprises, from the energy of Chicago and Cook County to the quiet beauty of Shawnee National Forest. Explore rich history, farmland, natural scenery, and small-town charm with our Illinois county map. Find your next adventure and discover all that Illinois has to offer.

Scroll to Top