Joliet, Illinois

Joliet population, 2020 to 2024

Joliet added 1,485 residents from July 2020 to July 2024, a change of +1.0%. In the latest year it moved by +756. Among 330 Illinois places of 5,000 or more, that growth ranks 68th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Joliet is 10.3 times that size.

Joliet covers 66.29 square miles of land and 0.74 of water, for 2,290 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Joliet is close to the typical town.

The 2 counties Joliet spans

Joliet crosses county lines. The Census county-part estimates split its 151,837 residents as follows; Will County holds 90.5% of them. The shaded shapes are on the map above; dots mark the eight nearest places.

ZIP codes in Joliet

7 ZIP Code Tabulation Areas (ZCTAs) overlap Joliet by at least 10% of the ZCTA's or the city's land: 60421, 60431, 60432, 60433, 60435, 60436, 60586. 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 Joliet is

The Census internal point of Joliet is at 41.516900, -88.148000. Springfield, the capital, is 143.5 miles SW in a straight line. The nearest larger place is Naperville, IL (153,124 people), 16.1 miles away. The ground at the internal point is about 188 m (617 ft) above sea level.

Daylight in Joliet

At 41.52° N, Joliet gets about 15 h 11 min of daylight around the June solstice and 9 h 10 min around the December solstice, a swing of 6 h 01 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026. Month-by-month sunrise and sunset times are on the Joliet daylight page.

Places near Joliet

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Rockdale, 1.5 miles away, with 1,980 people.