Sullivan, Illinois

Sullivan population, 2020 to 2024

Sullivan lost 103 residents from July 2020 to July 2024, a change of -2.3%. In the latest year it moved by +35.

Sullivan covers 2.77 square miles of land, for 1,552 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Sullivan is less dense than the typical town.

What county Sullivan is in

All of Sullivan's residents live in Moultrie County, which had 14,365 residents in 2024. Sullivan holds 29.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Sullivan

1 ZIP Code Tabulation Area (ZCTA) overlaps Sullivan by at least 10% of the ZCTA's or the city's land: 61951. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Sullivan is

The Census internal point of Sullivan is at 39.595200, -88.608900. Springfield, the capital, is 56.8 miles WNW in a straight line. The nearest larger place is Mattoon, IL (16,602 people), 15.5 miles away. The nearest city of 100,000 or more is Springfield, IL, 56.7 miles away.

Daylight in Sullivan

At 39.60° N, Sullivan gets about 14 h 58 min of daylight around the June solstice and 9 h 22 min around the December solstice, a swing of 5 h 36 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Sullivan

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Bethany, 7.8 miles away, with 1,198 people.