Illiopolis, IL

View of Illiopolis, IL
Image credit: Dual Freq / CC BY 2.5
Population
832
U.S. Census Population Estimates Program · 2025
Elevation
604 ft
Median Home Value
$100,800
U.S. Census American Community Survey 5-Year · 2024
Median Rent
$663/mo
U.S. Census American Community Survey 5-Year · 2024
Median Income
$63,125
U.S. Census American Community Survey 5-Year · 2024
General Quality
Overall rating out of 100

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About Illiopolis

Illiopolis sits right in central Illinois, tucked between Springfield and Decatur along Route 36. With about 850 residents, the village offers a quiet, relaxed atmosphere while keeping you within an easy 30-minute drive of bigger city amenities, hospitals, and employers. The name playfully blends "Illinois" with the Greek word for city, an ambitious title for a community that originally grew around a mid-19th-century railroad depot.

Formosa Plastics plant near Illiopolis Illinois

The area carries some interesting local history, including a significant World War II chapter when thousands of workers staffed the nearby Sangamon Ordnance Plant. Today, Illiopolis is a classic Midwestern farm town where neighbors know one another and wide-open prairie surrounds peaceful residential streets. For newcomers seeking an affordable place to settle down with plenty of breathing room and simple highway access, it is a comfortable, down-to-earth spot to call home.

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