Fairfield, Illinois

Fairfield population, 2020 to 2024

Fairfield lost 97 residents from July 2020 to July 2024, a change of -2.0%. In the latest year it moved by +7.

Fairfield covers 4.10 square miles of land and 0.03 of water, for 1,168 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Fairfield is less dense than the typical town.

What county Fairfield is in

All of Fairfield's residents live in Wayne County, which had 15,928 residents in 2024. Fairfield holds 30.1% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Fairfield

1 ZIP Code Tabulation Area (ZCTA) overlaps Fairfield by at least 10% of the ZCTA's or the city's land: 62837. 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 Fairfield is

The Census internal point of Fairfield is at 38.380600, -88.372500. Springfield, the capital, is 118.6 miles NW in a straight line. The nearest larger place is Olney, IL (8,431 people), 28.6 miles away. The nearest city of 100,000 or more is Evansville, IN, 53.0 miles away.

Daylight in Fairfield

At 38.38° N, Fairfield gets about 14 h 51 min of daylight around the June solstice and 9 h 29 min around the December solstice, a swing of 5 h 21 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Fairfield

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Albion, 17.1 miles away, with 1,868 people.