In 2013, a study by Downtown Center Business Improvement District showed that of the 52,400 people resided in Downtown Los Angeles. The demographic breakdown was 52.7% Caucasian, 20.1% Asian, 17.0% Latino, and 6.2% African-American; 52.9% female, 47.1% male; and 74.8% of residents were between the ages of 23–44. The median age for residents was 34. The median household income was $98,700. The median household size was 1.8. In terms of educational attainment, 80.1% of residents had completed at least 4 years of college. The study was a self-selecting sample of 8,841 respondents across the DTLA area. It was not a "census" but rather a comprehensive survey of Downtown LA consumers.