Thornton Township, Cook County, Illinois
Thornton Township is a township in Cook County, Illinois. About 153,682 people live there (2020–2024 estimate). It covers 46.9 sq mi (121 km²) of land and uses Central Time. It has its own local government.
- Population, 2020–2024 estimate
- 153,682 ± 36
- County
- Cook County
- School district
- Thornton Township High School District 2059–12 · high school
- Land area
- 46.9 sq mi (121 km²)
- Type
- TownshipIts own local government
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $58,534 ± $2,420
- Median home value
- $156,800 ± $3,551
- Water area
- 0.48 sq mi (1.25 km²)
- State
- Illinois
- Census code (GEOID)
- 1703175198
- Coordinates (central point)
- 41.601273, -87.600323
These coordinates mark a central point for the area, not a street address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.
Cities, towns and communities in Thornton Township, largest first
- Calumet City (city)35,100 people
- Lansing (village)28,284 people
- South Holland (village)20,911 people
- Dolton (village)20,825 people
- Harvey (city)20,230 people
- Homewood (village)19,294 people
- Riverdale (village)10,340 people
- Burnham (village)3,937 people
- Dixmoor (village)2,948 people
- Thornton (village)1,940 people
- Phoenix (village)1,751 people
- East Hazel Crest (village)1,068 people
These places’ central points lie inside Thornton Township. A place can reach across the line, and its government, if it has one, can be separate from the township’s.
Bordering areas, nearest first
- Calumet Township4.9 mi northwest
- Bloom Township6.0 mi south
- North Township, Lake County, Indiana6.7 mi east
- Bremen Township7.0 mi west
- Chicago (city)17 mi north
These towns, townships, cities and boroughs share a boundary with Thornton Township. Distances are straight lines between central points, not driving distances.
Other townships in Cook County, largest first
- Wheeling Township153,991 people
- Worth Township149,419 people
- Proviso Township147,690 people
- Maine Township137,069 people
- Schaumburg Township131,761 people
- Lyons Township112,613 people
- Palatine Township111,737 people
- Niles Township109,647 people
- Bremen Township104,594 people
- Hanover Township97,865 people
- Orland Township96,492 people
- Elk Grove Township93,245 people
All 28
- Leyden Township90,973 people
- Northfield Township89,674 people
- Bloom Township83,966 people
- Cicero Township82,797 people
- Rich Township74,330 people
- New Trier Township56,161 people
- Berwyn Township55,595 people
- Palos Township55,552 people
- Oak Park Township53,292 people
- Stickney Township40,507 people
- Norwood Park Township26,755 people
- Lemont Township22,564 people
- Calumet Township18,086 people
- Riverside Township16,242 people
- Barrington Township16,233 people
- River Forest Township11,992 people
People counts are American Community Survey 2020–2024 5-year estimates. See Cook County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in Thornton Township
- Longest day
- 15 hours 12 minutes around June 21
- Shortest day
- 9 hours 10 minutes around December 21
- Earliest sunrise
- 5:15 AM around June 15
- Latest sunrise
- 7:28 AM the day before clocks go back in November
- Earliest sunset
- 4:20 PM around December 8
- Latest sunset
- 8:28 PM around June 27
Clocks go forward an hour on the second Sunday in March and back on the first Sunday in November, so sunrise and sunset jump an hour later in March and an hour earlier in November.
| Day | Sunrise | Sunset | Daylight |
|---|---|---|---|
| Jan 15 | 7:14 AM | 4:45 PM | 9 h 31 min |
| Feb 15 | 6:45 AM | 5:23 PM | 10 h 38 min |
| Mar 15 | 7:02 AM | 6:56 PM | 11 h 54 min |
| Apr 15 | 6:10 AM | 7:30 PM | 13 h 20 min |
| May 15 | 5:31 AM | 8:02 PM | 14 h 31 min |
| Jun 15 | 5:15 AM | 8:26 PM | 15 h 11 min |
| Jul 15 | 5:29 AM | 8:23 PM | 14 h 54 min |
| Aug 15 | 5:58 AM | 7:50 PM | 13 h 52 min |
| Sep 15 | 6:30 AM | 6:59 PM | 12 h 29 min |
| Oct 15 | 7:02 AM | 6:09 PM | 11 h 7 min |
| Nov 15 | 6:39 AM | 4:30 PM | 9 h 51 min |
| Dec 15 | 7:10 AM | 4:20 PM | 9 h 10 min |
Approximate times for a flat horizon at the central point; the days move by a day or so from year to year. Hills and weather can change what you see.
Before using this answer on a form
A township line is not always the line on your mail: a mailing address can name another town or post office, and school districts, ZIP Codes and tax districts follow their own lines. For taxes, voting or permits, check the full address with Cook County or the local office.
Find the township or town where you are now or find your county.