Lacon, Illinois

Lacon population, 2020 to 2024

Lacon lost 33 residents from July 2020 to July 2024, a change of -1.8%. In the latest year it moved by -18.

Lacon covers 1.64 square miles of land and 0.04 of water, for 1,121 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Lacon is less dense than the typical town.

What county Lacon is in

All of Lacon's residents live in Marshall County, which had 11,552 residents in 2024. Lacon holds 15.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Lacon

1 ZIP Code Tabulation Area (ZCTA) overlaps Lacon by at least 10% of the ZCTA's or the city's land: 61540. 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 Lacon is

The Census internal point of Lacon is at 41.022900, -89.406300. Springfield, the capital, is 86.8 miles S in a straight line. The nearest larger place is Henry, IL (2,298 people), 7.0 miles away. The nearest city of 100,000 or more is Peoria, IL, 21.7 miles away.

Daylight in Lacon

At 41.02° N, Lacon gets about 15 h 08 min of daylight around the June solstice and 9 h 13 min around the December solstice, a swing of 5 h 55 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Lacon

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Henry, 7.0 miles away, with 2,298 people.