Jefferson Township, Johnson County, Iowa

Jefferson Township is a township in Johnson County, Iowa. About 4,334 people live there (2020–2024 estimate). It covers 25.4 sq mi (65.7 km²) of land and uses Central Time. Its local government works under another unit of government.

Jefferson Township in Iowa

Jefferson Township and its neighbors (simplified outlines). Open in OpenStreetMap ↗

Population, 2020–2024 estimate: 4,334 ± 398
County: Johnson County
School district: College Community School District
Land area: 25.4 sq mi (65.7 km²)
Type: TownshipGovernment under another
Time zone: Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income: $119,183 ± $12,905
Median home value: $389,500 ± $25,132
Water area: 0.95 sq mi (2.47 km²)
State: Iowa
Census code (GEOID): 1910392229
Coordinates (central point): 41.824506, -91.655541

Check a point in the township finder

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

Swisher (city)1,182 people
Shueyville (city)740 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

Madison Township3.9 mi south
College Township, Linn County4.2 mi north
Monroe Township6.0 mi west
Big Grove Township6.3 mi east
Penn Township6.8 mi southeast
Cedar Rapids (city)9.7 mi north

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 Johnson County, largest first

Penn Township31,822 people
West Lucas Township10,251 people
Clear Creek Township10,095 people
Big Grove Township4,864 people
Madison Township4,645 people
Newport Township1,988 people
Scott Township1,941 people
Oxford Township1,811 people
Fremont Township1,631 people
Sharon Township1,625 people
Liberty Township1,401 people
Washington Township1,005 people

All 20

People counts are American Community Survey 2020–2024 5-year estimates. See Johnson County for its cities, ZIP Code areas and county seat.

Sunrise and sunset in Jefferson Township

Longest day: 15 hours 14 minutes around June 21
Shortest day: 9 hours 8 minutes around December 21
Earliest sunrise: 5:31 AM around June 15
Latest sunrise: 7:44 AM the day before clocks go back in November
Earliest sunset: 4:35 PM around December 8
Latest sunset: 8:45 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.

Sunrise and sunset on the 15th of each month
Day	Sunrise	Sunset	Daylight
Jan 15	7:31 AM	5:00 PM	9 h 29 min
Feb 15	7:02 AM	5:39 PM	10 h 37 min
Mar 15	7:18 AM	7:13 PM	11 h 55 min
Apr 15	6:26 AM	7:47 PM	13 h 21 min
May 15	5:46 AM	8:19 PM	14 h 33 min
Jun 15	5:31 AM	8:43 PM	15 h 12 min
Jul 15	5:44 AM	8:40 PM	14 h 56 min
Aug 15	6:14 AM	8:06 PM	13 h 52 min
Sep 15	6:46 AM	7:16 PM	12 h 30 min
Oct 15	7:18 AM	6:25 PM	11 h 7 min
Nov 15	6:55 AM	4:46 PM	9 h 51 min
Dec 15	7:26 AM	4:36 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 Johnson County or the local office.

Find the township or town where you are now or find your county.

See this area on Census.gov ↗