Monrovia was laid out in 1834 and incorporated in 1995. The town of Monrovia is located in the northern part of Morgan County, Indiana. It is in Monroe Township which explains the origin of the name.

The Town of Monrovia had a population of 1,641 as of the 2020 Census. Monrovia ranks in the lower quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Indiana.

The primary coordinate point for Monrovia is located at latitude 39.5872 and longitude -86.4754 in Morgan County. The formal boundaries for the Town of Monrovia encompass a land area of 1.77 sq. miles and a water area of 0 sq. miles. Morgan County is in the Eastern time zone (GMT -5). The elevation is 804 feet.

The Monroe-Gregg School District which serves students in Monroe and Gregg townships in Morgan County operates three schools:

  • Monrovia Elementary School, recently constructed houses grades K-5. It replaced Hall Elementary School
  • Monrovia Middle School, houses grades 6-8.
  • Monrovia Junior-Senior High School, houses grades 9-12.