Illinois · Census place 1714000

Chicago, Illinois

Chicago is a city in Cook County, Illinois with an estimated 2,721,308 residents on July 1, 2024. It is the largest of 651 incorporated places of 1,000+ people in the state.

Population 2024
2,721,308
#1 of 651 in Illinois
Change since 2020
-0.9%
-23,888 people
Land area
227.8 sq mi
+ 6.79 sq mi water
Density
11,949 / sq mi
State median 2,177
Orange pin: Chicago. Shaded: its county. Dark pin: Springfield.

Chicago population, 2020 to 2024

Chicago lost 23,888 residents from July 2020 to July 2024, a change of -0.9%. In the latest year it moved by +22,164. Among 330 Illinois places of 5,000 or more, that growth ranks 166th; the median place changed by -0.9%. The median place of 5,000+ in Illinois has 14,760 people, so Chicago is 184.4 times that size.

2.75M20202.71M20212.68M20222.70M20232.72M2024
July 1 estimates. The April 2020 estimates base was 2,748,331. The axis starts above zero so yearly changes are visible.

Chicago covers 227.75 square miles of land and 6.79 of water, for 11,949 people per square mile of land. The median Illinois place of 5,000+ has 2,177, so Chicago is denser than the typical town.

What county Chicago is in

All of Chicago's residents live in Cook County, which had 5,182,617 residents in 2024. Chicago holds 52.5% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Chicago

60 ZIP Code Tabulation Areas (ZCTAs) overlap Chicago by at least 10% of the ZCTA's or the city's land: 60018, 60106, 60601, 60602, 60603, 60604, 60605, 60606, 60607, 60608, 60609, 60610, 60611, 60612, 60613, 60614, 60615, 60616, 60617, 60618, 60619, 60620, 60621, 60622, 60623, 60624, 60625, 60626, 60628, 60629, 60630, 60631, 60632, 60633, 60634, 60636, 60637, 60638, 60639, 60640, 60641, 60642, 60643, 60644, 60645, 60646, 60647, 60649, 60651, 60652, 60653, 60654, 60655, 60656, 60657, 60659, 60660, 60661, 60707, 60827. 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 Chicago is

The Census internal point of Chicago is at 41.837000, -87.684900. Springfield, the capital, is 175.3 miles SW in a straight line. The nearest larger place is New York, NY (8,478,072 people), 717.9 miles away. The nearest city of 100,000 or more is Naperville, IL, 25.3 miles away. The ground at the internal point is about 178 m (584 ft) above sea level.

Internal point

Decimal
41.837000, -87.684900
DMS
41°50'13.20"N 87°41'5.64"W
UTM
16N 443133.5E 4631905.5N
Geohash
dp3wh8jy1
Plus code
86HJR8P8+R2
Time zone
America/Chicago

Daylight in Chicago

At 41.84° N, Chicago gets about 15 h 13 min of daylight around the June solstice and 9 h 08 min around the December solstice, a swing of 6 h 05 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 Chicago daylight page.

Places near Chicago

The eight nearest incorporated places of 1,000+ in Illinois, measured between internal points. The closest is Cicero, 3.9 miles away, with 82,090 people.

Questions people ask

What is the population of Chicago, IL?

2,721,308 on July 1, 2024, in the Census Vintage 2024 estimates. That is down 23,888 (0.9%) from 2,745,196 in July 2020.

What county is Chicago in?

Cook County. All of its residents live in that county.

What ZIP codes cover Chicago?

60 ZIP Code Tabulation Areas overlap it by at least 10% of either area: 60018, 60106, 60601, 60602, 60603, 60604, 60605, 60606, 60607, 60608, 60609, 60610, and more.

How far is Chicago from Springfield?

175.3 miles (282.1 km) in a straight line, heading SW from Chicago.

What is the nearest larger city to Chicago?

New York, NY, with 8,478,072 residents, 717.9 miles away between internal points.

Sources and data as of

Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.

  1. 01Census Vintage 2024 subcounty population estimates
  2. 02Census 2024 Gazetteer, places
  3. 03Census 2020 ZCTA to place relationship file
  4. 04Census 2024 cartographic boundary file, counties (1:5,000,000)
  5. 05Open-Meteo forecast API (time zone and Copernicus GLO-90 elevation) (last verified 2026-09-30)

How every number is computed: methodology. Spotted a wrong figure? Report an error.