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Mendon, Illinois
Lewis Round Barn
Location of Mendon in Adams County, Illinois.
Location of Mendon in Adams County, Illinois.
Location of Illinois in the United States
Location of Illinois in the United States
Country United States
State Illinois
County Adams
Township Mendon
Area
 • Total 0.86 sq mi (2.22 km2)
 • Land 0.86 sq mi (2.22 km2)
 • Water 0.00 sq mi (0.00 km2)  0%
Elevation
764 ft (233 m)
Population
 (2020)
 • Total 872
 • Density 1,017.50/sq mi (393.00/km2)
Time zone UTC-6 (CST)
 • Summer (DST) UTC-5 (CDT)
ZIP Code(s)
62351
Area code(s) 217
FIPS code 17-48307
GNIS feature ID 2399313
Wikimedia Commons Mendon, Illinois

Mendon is a small village located in Adams County, Illinois, in the United States. In 2020, about 872 people lived there. It is part of the larger Quincy area.

The village got its name from Mendon, Massachusetts.

History of Mendon

How Mendon Got Its Name

Mendon was first planned out in 1833. Back then, it was called Fairfield.

However, there was already another town named Fairfield in Illinois. So, the village decided to change its name to Mendon.

Geography of Mendon

Where is Mendon Located?

Mendon is in the northwest part of Adams County. Its exact location is 40°5′18″N 91°17′4″W / 40.08833°N 91.28444°W / 40.08833; -91.28444.

Size and Surroundings

The village covers an area of about 0.86 square miles (2.22 square kilometers). All of this area is land.

Illinois Route 61 runs through the community. Illinois Route 336 is also nearby, about half a mile to the east. The city of Quincy is about eleven miles to the south-southwest. A small stream called Ursa Creek starts southeast of Mendon and flows past the south side of the village.

People of Mendon

Population Over the Years

The number of people living in Mendon has changed over time. Here's a look at the population from different years:

Historical population
Census Pop.
1880 652
1890 640 −1.8%
1900 627 −2.0%
1910 640 2.1%
1920 645 0.8%
1930 580 −10.1%
1940 637 9.8%
1950 625 −1.9%
1960 784 25.4%
1970 883 12.6%
1980 979 10.9%
1990 854 −12.8%
2000 883 3.4%
2010 953 7.9%
2020 872 −8.5%
U.S. Decennial Census

Who Lives in Mendon?

According to the 2020 census, there were 872 people living in Mendon. There were 394 households, which are groups of people living together.

Most of the people in Mendon are White. A small number of people are from other racial backgrounds or are of Hispanic or Latino origin.

About 29.6% of the population was under 18 years old. About 18.8% were 65 years or older. The average age in the village was 37.8 years.

Places to See

Lewis Round Barn

One important historical place in Mendon is the Lewis Round Barn. This unique building is listed on the National Register of Historic Places.

See also

Kids robot.svg In Spanish: Mendon (Illinois) para niños

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