Editing Willowbrook, California (section)

===2010===
At the [[2010 United States Census|2010 census]], Willowbrook had a population of 35,983. The population density was {{convert|9,544.1|PD/sqmi|PD/km2|sp=us|adj=off}}. The racial makeup of Willowbrook was 8,245 (22.9%) White (0.9% Non-Hispanic White),<ref name="quickfacts.census.gov">{{cite web |title=Willowbrook CDP, California |url=http://quickfacts.census.gov/qfd/states/06/0685614.html |website=quickfacts.census.gov |access-date=19 March 2023 |archive-url=https://web.archive.org/web/20120418220639/http://quickfacts.census.gov/qfd/states/06/0685614.html |archive-date=April 18, 2012}}</ref> 12,387 (34.4%) African American, 273 (0.8%) Native American, 119 (0.3%) Asian, 49 (0.1%) Pacific Islander, 13,858 (38.5%) from other races, and 1,052 (2.9%) from two or more races. Hispanic or Latino of any race were 22,979 persons (63.9%).<ref>{{cite web|url=https://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0685614|archive-url=https://archive.today/20140715033934/http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0685614|url-status=dead|archive-date=July 15, 2014|title=2010 Census Interactive Population Search: CA - Willowbrook CDP|publisher=U.S. Census Bureau|access-date=July 12, 2014}}</ref>

The census reported that 35,577 people (98.9% of the population) lived in households, 116 (0.3%) lived in non-institutionalized group quarters, and 290 (0.8%) were institutionalized.

There were 8,721 households, 4,920 (56.4%) had children under the age of 18 living in them, 3,626 (41.6%) were [[marriage|opposite-sex married couples]] living together, 2,635 (30.2%) had a female householder with no husband present, 859 (9.8%) had a male householder with no wife present. There were 640 (7.3%) [[POSSLQ|unmarried opposite-sex partnerships]], and 38 (0.4%) [[same-sex partnerships|same-sex married couples or partnerships]]. 1,336 households (15.3%) were one person and 585 (6.7%) had someone living alone who was 65 or older. The average household size was 4.08. There were 7,120 families (81.6% of households); the average family size was 4.38.

The age distribution was 11,790 people (32.8%) under the age of 18, 4,500 people (12.5%) aged 18 to 24, 9,595 people (26.7%) aged 25 to 44, 7,200 people (20.0%) aged 45 to 64, and 2,898 people (8.1%) who were 65 or older. The median age was 28.2 years. For every 100 females, there were 92.1 males. For every 100 females aged 18 and over, there were 89.2 males.

There were 9,600 housing units at an average density of 2,546.3 per square mile, of the occupied units 4,525 (51.9%) were owner-occupied and 4,196 (48.1%) were rented. The homeowner vacancy rate was 2.5%; the rental vacancy rate was 5.9%. 19,021 people (52.9% of the population) lived in owner-occupied housing units and 16,556 people (46.0%) lived in rental housing units.

According to the 2010 United States Census, Willowbrook had a median household income of $34,005, with 31.5% of the population living below the federal poverty line.<ref name="quickfacts.census.gov"/>