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Find information about Sangamon County government, services, events, and history. Learn about the county's population, economy, education, and attractions.
- Sangamon County Clerk Home Page
Many of our services are now available online. You can order...
- Sangamon County Clerk Home Page
Sangamon County is a county located near the center of the U.S. state of Illinois. According to the 2020 census , it had a population of 196,343. [1] Its county seat and largest city is Springfield , [2] the state capital .
SangamonLink is an online encyclopedia of Sangamon County history, created by the Sangamon County Historical Society. It covers topics from Abraham Lincoln to local resources, and invites contributions from the public.
Sangamon County was formed in 1821 from Madison and Bond Counties. The county took its name from the Sangamon River which runs through it. Sangamon comes from the Pottawatomie word Sain-guee-mon allegedly meaning "where there is plenty to eat."
In 2022, Sangamon County, IL had a population of 196k people with a median age of 40.6 and a median household income of $71,653. Between 2021 and 2022 the population of Sangamon County, IL declined from 196,759 to 196,122, a −0.324% decrease and its median household income grew from $66,149 to $71,653, a 8.32% increase.
SITTING SQUARELY IN CENTRAL ILLINOIS and based in Springfield, the state capital, the Sangamon County Historical Society serves a history-laced 877 square mile area that includes four cities, 23 villages, 23 unincorporated areas and 26 townships.
Many of our services are now available online. You can order a certified birth, death or marriage record, register to vote, request a vote by mail ballot, review a sample ballot, or even track the status of your vote by mail ballot.
