LaSalle, Illinois

LaSalle population, 2020 to 2024

LaSalle lost 142 residents from July 2020 to July 2024, a change of -1.5%. In the latest year it moved by -19. Among 330 Illinois places of 5,000 or more, that growth ranks 191st; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so LaSalle is 64% of it.

LaSalle covers 13.50 square miles of land and 0.12 of water, for 698 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so LaSalle is less dense than the typical town.

What county LaSalle is in

All of LaSalle's residents live in LaSalle County, which had 108,390 residents in 2024. LaSalle holds 8.7% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in LaSalle

1 ZIP Code Tabulation Area (ZCTA) overlaps LaSalle by at least 10% of the ZCTA's or the city's land: 61301. 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 LaSalle is

The Census internal point of LaSalle is at 41.335200, -89.097200. Springfield, the capital, is 111.2 miles SSW in a straight line. The nearest larger place is Peru, IL (9,793 people), 2.7 miles away. The nearest city of 100,000 or more is Peoria, IL, 48.6 miles away.

Daylight in LaSalle

At 41.34° N, LaSalle gets about 15 h 10 min of daylight around the June solstice and 9 h 11 min around the December solstice, a swing of 5 h 59 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near LaSalle

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Peru, 2.7 miles away, with 9,793 people.