|Motto(s): "A Sense Of Community"|
Location of Leo-Cedarville in Allen County, Indiana.
|• Total||3.85 sq mi (9.97 km2)|
|• Land||3.71 sq mi (9.62 km2)|
|• Water||0.14 sq mi (0.35 km2)|
|Elevation||797 ft (243 m)|
|• Estimate (2016)||3,767|
|• Density||1,014.54/sq mi (391.68/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|GNIS feature ID||1681810|
Leo-Cedarville was formed by the incorporation of the villages of Leo and Cedarville in 1996. This was done so that the two towns could not be annexed by the nearby city of Fort Wayne.
Leo-Cedarville is located at  along the St. Joseph River and the Cedarville Reservoir.(41.214899, -85.015475)
According to the 2010 census, Leo-Cedarville has a total area of 3.85 square miles (9.97 km2), of which 3.71 square miles (9.61 km2) (or 96.36%) is land and 0.14 square miles (0.36 km2) (or 3.64%) is water.
The town is served by Cedarville Elementary School, Leo Elementary School, and Leo Junior/Senior High School.
As of the census of 2010, there were 3,603 people, 1,187 households, and 1,007 families residing in the town. The population density was 971.2 inhabitants per square mile (375.0/km2). There were 1,234 housing units at an average density of 332.6 per square mile (128.4/km2). The racial makeup of the town was 97.1% White, 0.1% African American, 0.2% Native American, 0.8% Asian, 0.6% from other races, and 1.2% from two or more races. Hispanic or Latino of any race were 1.6% of the population.
There were 1,187 households of which 48.4% had children under the age of 18 living with them, 73.3% were married couples living together, 7.1% had a female householder with no husband present, 4.5% had a male householder with no wife present, and 15.2% were non-families. 13.1% of all households were made up of individuals and 5.7% had someone living alone who was 65 years of age or older. The average household size was 3.04 and the average family size was 3.32.
The median age in the town was 38.1 years. 32.3% of residents were under the age of 18; 7.1% were between the ages of 18 and 24; 24% were from 25 to 44; 27.2% were from 45 to 64; and 9.4% were 65 years of age or older. The gender makeup of the town was 49.8% male and 50.2% female.
As of the census of 2000, there were 2,782 people, 922 households, and 778 families residing in the town. The population density was 745.1 people per square mile (288.0/km²). There were 939 housing units at an average density of 251.5 per square mile (97.2/km²). The racial makeup of the town was 97.81% White, 0.07% African American, 0.29% Native American, 0.40% Asian, 0.29% from other races, and 1.15% from two or more races. Hispanic or Latino of any race were 1.04% of the population.
There were 922 households out of which 47.3% had children under the age of 18 living with them, 76.2% were married couples living together, 5.7% had a female householder with no husband present, and 15.6% were non-families. 13.0% of all households were made up of individuals and 5.5% had someone living alone who was 65 years of age or older. The average household size was 3.02 and the average family size was 3.33.
In the town, the population was spread out with 32.9% under the age of 18, 6.2% from 18 to 24, 32.6% from 25 to 44, 19.9% from 45 to 64, and 8.4% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 98.0 males. For every 100 females age 18 and over, there were 98.5 males.
The median income for a household in the town was $66,652, and the median income for a family was $70,750. Males had a median income of $48,438 versus $25,552 for females. The per capita income for the town was $22,170. About 1.0% of families and 1.2% of the population were below the poverty line, including none of those under age 18 and 8.6% of those age 65 or over.
Leo-Cedarville's Town Clerk/Treasurer and Town Council members are elected to four-year terms. The Town Council has a total of 5 seats. The council includes the Council President and Vice President which are voted on within the council after an election. The current Town Clerk/Treasurer is Pamela Spannuth who was elected in 2016. The Town Manager is a non-council member and is appointed by a unanimous vote of the Town Council. The Town-Manager has the power to hire assistants, town maintenance workers, and other positions. In 2017, the Town Council hired and appointed Ashlee Fiandaca as Leo-Cedarville's Town Manager.
- "2016 U.S. Gazetteer Files". United States Census Bureau. Retrieved Jul 28, 2017.
- "American FactFinder". United States Census Bureau. Retrieved 2012-12-11.
- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- Griswold, Bert Joseph; Taylor, Mrs. Samuel R. (1917). The Pictorial History of Fort Wayne, Indiana: A Review of Two Centuries of Occupation of the Region about the Head of the Maumee River. Robert O. Law Company. pp. 662–663.
- National Park Service (2010-07-09). "National Register Information System". National Register of Historic Places. National Park Service.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "G001 - Geographic Identifiers - 2010 Census Summary File 1". United States Census Bureau. Retrieved 2015-07-17.
- "Census of Population and Housing". Census.gov. Retrieved June 4, 2015.