Cooperstown Township, Brown County, Illinois
Cooperstown Township is a township in Brown County, Illinois. About 184 people live there (2020–2024 estimate). It covers 40.7 sq mi (105 km²) of land and uses Central Time. It has its own local government.
- Population, 2020–2024 estimate
- 184 ± 102
- County
- Brown County
- School district
- Brown County Community Unit School District 1
- Land area
- 40.7 sq mi (105 km²)
- Type
- TownshipIts own local government
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $86,154 ± $39,853
- Median home value
- $182,600 ± $15,064
- Water area
- 0.78 sq mi (2.02 km²)
- State
- Illinois
- Census code (GEOID)
- 1700916262
- Coordinates (central point)
- 39.976469, -90.595465
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.
Bordering areas, nearest first
- Ripley Township5.1 mi northwest
- Woodstock Township, Schuyler County5.3 mi north
- Versailles Township6.5 mi south
- Bainbridge Township, Schuyler County6.7 mi northeast
- Mount Sterling Township7.5 mi west
- Hagener Township, Cass County8.0 mi southeast
- Beardstown Township, Cass County8.7 mi east
These towns, townships, cities and boroughs share a boundary with Cooperstown Township. Distances are straight lines between central points, not driving distances.
Other townships in Brown County, largest first
- Mount Sterling Township4,157 people
- Versailles Township821 people
- Missouri Township324 people
- Lee Township312 people
- Elkhorn Township213 people
- Buckhorn Township188 people
- Ripley Township110 people
- Pea Ridge Township13 people
People counts are American Community Survey 2020–2024 5-year estimates. See Brown County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in Cooperstown Township
- Longest day
- 15 hours 1 minute around June 21
- Shortest day
- 9 hours 20 minutes around December 21
- Earliest sunrise
- 5:33 AM around June 14
- Latest sunrise
- 7:36 AM the day before clocks go back in November
- Earliest sunset
- 4:36 PM around December 7
- Latest sunset
- 8:35 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 | 7:22 AM | 5:01 PM | 9 h 39 min |
| Feb 15 | 6:55 AM | 5:38 PM | 10 h 43 min |
| Mar 15 | 7:14 AM | 7:09 PM | 11 h 55 min |
| Apr 15 | 6:24 AM | 7:40 PM | 13 h 16 min |
| May 15 | 5:47 AM | 8:10 PM | 14 h 23 min |
| Jun 15 | 5:33 AM | 8:32 PM | 14 h 59 min |
| Jul 15 | 5:46 AM | 8:30 PM | 14 h 44 min |
| Aug 15 | 6:13 AM | 7:59 PM | 13 h 46 min |
| Sep 15 | 6:43 AM | 7:11 PM | 12 h 28 min |
| Oct 15 | 7:12 AM | 6:22 PM | 11 h 10 min |
| Nov 15 | 6:47 AM | 4:46 PM | 9 h 59 min |
| Dec 15 | 7:16 AM | 4:38 PM | 9 h 22 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 Brown County or the local office.
Find the township or town where you are now or find your county.