Oak Grove Flag

Oak Grove

County:
Mercer County
County Seat:
No
Area (mi²):
0.658
State:
Illinois

Oak Grove is a village located in Mercer County, Illinois. Oak Grove has a 2026 population of 470. Oak Grove is currently growing at a rate of 0.86% annually but its population has decreased by -0.21% since the most recent census, which recorded a population of 471 in 2020.

470
Total Population
714
Density (mi²)
4 0.86%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)