Lake Petersburg is a

census-designated place A census-designated place (CDP) is a Place (United States Census Bureau), concentration of population defined by the United States Census Bureau for statistical purposes only. CDPs have been used in each decennial census since 1980 as the counte ...

in Menard County,

Illinois Illinois ( ) is a U.S. state, state in the Midwestern United States, Midwestern United States. It borders on Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash River, Wabash and Ohio River, Ohio rivers to its ...

, United States. Its population was 740 as of the 2020 census. The unincorporated community centers on a small

reservoir A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of wa ...

, which is used extensively by residents for recreation.

Geography

Lake Petersburg is southwest of the center of Menard County, surrounding a reservoir of the same name, built in a valley that flows to the

Sangamon River The Sangamon River is a principal tributary of the Illinois River, approximately long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed May 13, 2011 in central Illinois in the United Sta ...

less than a mile to the east. Petersburg, the Menard

county seat A county seat is an administrative center, seat of government, or capital city of a county or parish (administrative division), civil parish. The term is in use in five countries: Canada, China, Hungary, Romania, and the United States. An equiva ...

, is to the north. According to the

U.S. Census Bureau The United States Census Bureau, officially the Bureau of the Census, is a principal agency of the U.S. federal statistical system, responsible for producing data about the American people and economy. The U.S. Census Bureau is part of the U ...

, the Lake Petersburg CDP has a total area of , within which the reservoir occupies , or 13.2% of the community's area.

Demographics

References

External links

Community website
Census-designated places in Menard County, Illinois Census-designated places in Illinois {{MenardCountyIL-geo-stub