Jefferson Township, Warren County, Iowa
Jefferson Township is a township in Warren County, Iowa. About 2,292 people live there (2020–2024 estimate). It covers 36.5 sq mi (94.4 km²) of land and uses Central Time. Its local government works under another unit of government.
- Population, 2020–2024 estimate
- 2,292 ± 417
- County
- Warren County
- School district
- Martensdale-St. Marys Community School District
- Land area
- 36.5 sq mi (94.4 km²)
- Type
- TownshipGovernment under another
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $98,887 ± $10,069
- Median home value
- $290,500 ± $63,861
- Water area
- 0.22 sq mi (0.57 km²)
- State
- Iowa
- Census code (GEOID)
- 1918192262
- Coordinates (central point)
- 41.388873, -93.741004
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 Jefferson Township, largest first
- Martensdale (city)569 people
- Bevington (city)15 people
These places’ central points lie inside Jefferson 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
- Crawford Township, Madison County5.2 mi west
- Linn Township5.4 mi north
- West Lincoln Township6.1 mi east
- Jackson Township6.9 mi south
- Greenfield Township8.1 mi northeast
These towns, townships, cities and boroughs share a boundary with Jefferson Township. Distances are straight lines between central points, not driving distances.
Other townships in Warren County, largest first
- Linn Township11,330 people
- Greenfield Township8,591 people
- Allen Township4,829 people
- Belmont Township1,301 people
- Richland Township1,245 people
- Otter Township1,141 people
- White Oak Township1,007 people
- East Lincoln Township985 people
- Jackson Township978 people
- Virginia Township925 people
- West Lincoln Township814 people
- Palmyra Township751 people
All 16
- Squaw Creek Township651 people
- White Breast Township592 people
- Union Township504 people
- Liberty Township429 people
People counts are American Community Survey 2020–2024 5-year estimates. See Warren County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in Jefferson Township
- Longest day
- 15 hours 10 minutes around June 21
- Shortest day
- 9 hours 11 minutes around December 21
- Earliest sunrise
- 5:40 AM around June 14
- Latest sunrise
- 7:52 AM the day before clocks go back in November
- Earliest sunset
- 4:45 PM around December 8
- Latest sunset
- 8:52 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 | 7:38 AM | 5:10 PM | 9 h 32 min |
| Feb 15 | 7:10 AM | 5:48 PM | 10 h 38 min |
| Mar 15 | 7:26 AM | 7:21 PM | 11 h 55 min |
| Apr 15 | 6:35 AM | 7:55 PM | 13 h 20 min |
| May 15 | 5:56 AM | 8:26 PM | 14 h 30 min |
| Jun 15 | 5:40 AM | 8:50 PM | 15 h 10 min |
| Jul 15 | 5:54 AM | 8:47 PM | 14 h 53 min |
| Aug 15 | 6:23 AM | 8:14 PM | 13 h 51 min |
| Sep 15 | 6:55 AM | 7:24 PM | 12 h 29 min |
| Oct 15 | 7:26 AM | 6:34 PM | 11 h 8 min |
| Nov 15 | 7:03 AM | 4:55 PM | 9 h 52 min |
| Dec 15 | 7:33 AM | 4:46 PM | 9 h 13 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 Warren County or the local office.
Find the township or town where you are now or find your county.