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Cairo, Ohio
Village
Houses on Main Street
Houses on Main Street
Location of Cairo, Ohio
Location of Cairo, Ohio
Location of Cairo in Allen County
Location of Cairo in Allen County
Country United States
State Ohio
County Allen
Township Monroe
Area
 • Total 0.28 sq mi (0.72 km2)
 • Land 0.28 sq mi (0.72 km2)
 • Water 0.00 sq mi (0.00 km2)
Elevation
814 ft (248 m)
Population
 (2020)
 • Total 517
 • Estimate 
(2023)
502
 • Density 1,866.43/sq mi (720.62/km2)
Time zone UTC-5 (Eastern (EST))
 • Summer (DST) UTC-4 (EDT)
ZIP code
45820
Area code(s) 419
FIPS code 39-10884
GNIS feature ID 2397522

Cairo (pronounced KAIR-oh) is a small village in Allen County, Ohio, United States. It's a quiet place located in the middle of farming country. In 2020, about 517 people lived there. Cairo is part of the larger Lima area.

History of Cairo

Cairo was first called West Cairo. It was officially planned out in 1848. A post office opened there in 1852, also named West Cairo. The name was changed to Cairo in 1922.

Where is Cairo Located?

Cairo is found where two important roads used to meet. These were the east-west U.S. Route 30 (also known as the Lincoln Highway) and the north-south State Route 65. Route 65 is still called "Ottawa Road" by locals.

In the 1970s, Route 30 was improved and moved about a mile south of the village. Now, the main east-west street in Cairo is simply called Main Street.

Nearby Towns and Cities

Cairo is close to several other towns and a larger city:

  • Lima: This city is about six miles south of Cairo on State Route 65.
  • Columbus Grove: This town is about six miles north on State Route 65.
  • Gomer: You can find Gomer about five miles west on the old Lincoln Highway route.
  • Beaverdam: This town is about six miles east on the old Lincoln Highway route.

Land and Water Features

The land in Cairo is mostly flat. Its height above sea level ranges from about 812 feet on the west side to 842 feet on the east side. The average elevation is about 815 feet.

The closest stream that flows all year is Rattlesnake Creek. It flows from south of the village and passes just west of Cairo. Water in the village generally flows from the south and east towards the north and west.

The United States Census Bureau says that Cairo covers a total area of about 0.23 square miles (0.72 square kilometers). All of this area is land.

Who Lives in Cairo?

The number of people living in Cairo has changed over the years. Here's how the population has grown and shrunk:

Historical population
Census Pop.
1880 316
1890 325 2.8%
1900 338 4.0%
1910 386 14.2%
1920 380 −1.6%
1930 374 −1.6%
1940 440 17.6%
1950 505 14.8%
1960 566 12.1%
1970 587 3.7%
1980 596 1.5%
1990 473 −20.6%
2000 499 5.5%
2010 524 5.0%
2020 517 −1.3%
2023 (est.) 502 −4.2%
U.S. Decennial Census

2010 Census Information

In 2010, the census counted 524 people living in Cairo. There were 198 households, which are groups of people living together. Most people in Cairo were White (97.7%). A small number were African American, Native American, or Asian. About 1.5% of the population was Hispanic or Latino.

The average age of people in Cairo in 2010 was about 37.2 years old. About 28% of the residents were under 18 years old.

Education in Cairo

Cairo has a public library. It is a part of the Allen County Library system. This means residents can use its resources for learning and reading.

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