The extent of an ETJ is dependent on the population size of the municipality. A municipality's population only incorporates those within the City Limits and does not include the residents within the ETJ. An ETJ can extend as little as one half mile (less than 5,000 inhabitants) or as much as 5 miles (100,000 inhabitants or more). The City of Cleburne has a 2-mile ETJ (25,000 to 49,000 inhabitants). As of December 2022, the City of Cleburne encompasses 36.113 square miles and has 100.211 square miles in the ETJ.