The 2000 U.S. census found that just 27,849 residents lived in the 5.84 square miles of downtown—or 4,770 people per square mile, among the lowest densities for the city of Los Angeles but about average for the county. The Southern California Association of Governments estimates that downtown's daytime population is 207,440. The population increased to 34,811 by 2008, according to city estimates. As of the end of 2019, the population of the district had grown to 85,000 residents, and 7,956 residential units were under construction. The median age for residents was 39, considered old for the city and the county.