Mendon Township, Clayton County, Iowa

Mendon Township is a township in Clayton County, Iowa. About 1,707 people live there (2020–2024 estimate). It covers 32.8 sq mi (85 km²) of land and uses Central Time. Its local government works under another unit of government.

Mendon Township in Iowa

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

Population, 2020–2024 estimate: 1,707 ± 258
County: Clayton County
School district: MFL MarMac Community School District
Land area: 32.8 sq mi (85 km²)
Type: TownshipGovernment under another
Time zone: Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income: $51,705 ± $10,544
Median home value: $174,500 ± $22,883
Water area: 0.85 sq mi (2.19 km²)
State: Iowa
Census code (GEOID): 1904392913
Coordinates (central point): 43.020638, -91.202844

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 Mendon Township, largest first

McGregor (city)719 people
Marquette (city)443 people

These places’ central points lie inside Mendon 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

Giard Township5.5 mi west
Town of Bridgeport, Crawford County, Wisconsin5.7 mi east
Town of Prairie du Chien, Crawford County, Wisconsin6.9 mi northeast
Fairview Township, Allamakee County6.9 mi north
Clayton Township7.3 mi south
Town of Wyalusing, Grant County, Wisconsin7.4 mi southeast
Farmersburg Township7.8 mi southwest

These towns, townships, cities and boroughs share a boundary with Mendon Township. Distances are straight lines between central points, not driving distances.

Other townships in Clayton County, largest first

All 21

Sperry Township352 people
Read Township326 people
Marion Township310 people
Elk Township288 people
Clayton Township285 people
Wagner Township226 people
Highland Township186 people
Cox Creek Township138 people
Giard Township124 people

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

Sunrise and sunset in Mendon Township

Longest day: 15 hours 22 minutes around June 21
Shortest day: 9 hours around December 21
Earliest sunrise: 5:25 AM around June 15
Latest sunrise: 7:45 AM the day before clocks go back in November
Earliest sunset: 4:29 PM around December 9
Latest sunset: 8:48 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	7:33 AM	4:55 PM	9 h 22 min
Feb 15	7:02 AM	5:35 PM	10 h 33 min
Mar 15	7:17 AM	7:11 PM	11 h 54 min
Apr 15	6:23 AM	7:47 PM	13 h 24 min
May 15	5:41 AM	8:21 PM	14 h 40 min
Jun 15	5:25 AM	8:45 PM	15 h 20 min
Jul 15	5:39 AM	8:42 PM	15 h 3 min
Aug 15	6:10 AM	8:07 PM	13 h 57 min
Sep 15	6:44 AM	7:14 PM	12 h 30 min
Oct 15	7:18 AM	6:22 PM	11 h 4 min
Nov 15	6:57 AM	4:41 PM	9 h 44 min
Dec 15	7:29 AM	4:30 PM	9 h 1 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 Clayton County or the local office.

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

See this area on Census.gov ↗