 According to the 2010 United States Census, La Crescenta-Montrose had a median household income of $89,375, with 7.4% of the population living below the federal poverty line.As of the census of 2000, there were 18,532 people, 6,945 households, and 4,944 families residing in the CDP.The population density was 5,407.0 people per square mile (2,086.1/km2).