Henderson Township, Knox County, Illinois
Henderson Township is a township in Knox County, Illinois. About 1,627 people live there (2020–2024 estimate). It covers 33.8 sq mi (87.6 km²) of land and uses Central Time. It has its own local government.
- Population, 2020–2024 estimate
- 1,627 ± 425
- County
- Knox County
- School district
- Galesburg Community Unit School District 205
- Land area
- 33.8 sq mi (87.6 km²)
- Type
- TownshipIts own local government
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $72,116 ± $17,119
- Median home value
- $199,700 ± $33,755
- State
- Illinois
- Census code (GEOID)
- 1709534020
- Coordinates (central point)
- 41.022874, -90.382615
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.
Census place in Henderson Township
- Henderson (village)284 people
This place’s central point lies inside Henderson 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
- Galesburg City Township5.0 mi south
- Rio Township5.8 mi north
- Kelly Township, Warren County5.9 mi west
- Sparta Township6.1 mi east
- Galesburg Township7.9 mi south
These towns, townships, cities and boroughs share a boundary with Henderson Township. Distances are straight lines between central points, not driving distances.
Other townships in Knox County, largest first
- Galesburg City Township29,481 people
- Knox Township4,871 people
- Cedar Township2,993 people
- Indian Point Township1,796 people
- Persifer Township1,190 people
- Ontario Township1,037 people
- Sparta Township908 people
- Truro Township772 people
- Walnut Grove Township707 people
- Salem Township667 people
- Orange Township566 people
- Copley Township441 people
All 20
- Haw Creek Township370 people
- Maquon Township360 people
- Rio Township343 people
- Victoria Township260 people
- Galesburg Township226 people
- Elba Township190 people
- Chestnut Township166 people
- Lynn Township75 people
People counts are American Community Survey 2020–2024 5-year estimates. See Knox County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in Henderson Township
- Longest day
- 15 hours 8 minutes around June 21
- Shortest day
- 9 hours 14 minutes around December 21
- Earliest sunrise
- 5:28 AM around June 14
- Latest sunrise
- 7:38 AM the day before clocks go back in November
- Earliest sunset
- 4:32 PM around December 8
- Latest sunset
- 8:37 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 | 7:24 AM | 4:57 PM | 9 h 33 min |
| Feb 15 | 6:56 AM | 5:35 PM | 10 h 39 min |
| Mar 15 | 7:13 AM | 7:08 PM | 11 h 55 min |
| Apr 15 | 6:22 AM | 7:41 PM | 13 h 19 min |
| May 15 | 5:43 AM | 8:12 PM | 14 h 29 min |
| Jun 15 | 5:28 AM | 8:35 PM | 15 h 7 min |
| Jul 15 | 5:42 AM | 8:32 PM | 14 h 50 min |
| Aug 15 | 6:11 AM | 8:00 PM | 13 h 49 min |
| Sep 15 | 6:41 AM | 7:10 PM | 12 h 29 min |
| Oct 15 | 7:12 AM | 6:21 PM | 11 h 9 min |
| Nov 15 | 6:48 AM | 4:42 PM | 9 h 54 min |
| Dec 15 | 7:19 AM | 4:33 PM | 9 h 14 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 Knox County or the local office.
Find the township or town where you are now or find your county.