Jacksonville is a city in Pulaski County, Arkansas, United States, and a suburb of Little Rock. As of the 2010 census, the population of the city was 28,364. It is part of the Little Rock–North Little Rock–Conway Metropolitan Statistical Area with 729,135 people as of 2014.

Pulaski County is a county in the U.S. state of Arkansas. With a population of 399,125 as of the 2020 United States Census, it is the most populous county in Arkansas. The county is included in the Little Rock–North Little Rock–Conway metropolitan area. Its county seat is Little Rock, which is also Arkansas's capital and largest city.