Pekin, Illinois

Pekin population, 2020 to 2024

Pekin lost 557 residents from July 2020 to July 2024, a change of -1.8%. In the latest year it moved by -24. Among 330 Illinois places of 5,000 or more, that growth ranks 209th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Pekin is 2.1 times that size.

Pekin covers 15.72 square miles of land and 0.85 of water, for 1,989 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Pekin is close to the typical town.

What county Pekin is in

All of Pekin's residents live in Tazewell County, which had 129,821 residents in 2024. Pekin holds 24.1% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Pekin

1 ZIP Code Tabulation Area (ZCTA) overlaps Pekin by at least 10% of the ZCTA's or the city's land: 61554. 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 Pekin is

The Census internal point of Pekin is at 40.568800, -89.625100. Springfield, the capital, is 54.4 miles S in a straight line. The nearest larger place is Peoria, IL (111,696 people), 12.6 miles away.

Daylight in Pekin

At 40.57° N, Pekin gets about 15 h 05 min of daylight around the June solstice and 9 h 16 min around the December solstice, a swing of 5 h 49 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Pekin

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is North Pekin, 3.1 miles away, with 1,439 people.