South Gate first appeared as a city in the
1930 U.S. census as part of the now defunct San Antonio Township. The population density was . 100.0% of residents lived in urban areas, while 0.0% lived in rural areas. The census reported that 99.7% of the population lived in households, 0.3% lived in non-institutionalized group quarters, and 0.1% were institutionalized. There were 24,577 households, of which 48.1% had children under the age of 18 living in them. Of all households, 49.8% were married-couple households, 9.0% were
cohabiting couple households, 14.7% had a male householder with no spouse or partner present, and 26.5% had a female householder with no spouse or partner present. The age distribution was 24.6% under the age of 18, 11.1% aged 18 to 24, 29.1% aged 25 to 44, 23.8% aged 45 to 64, and 11.3% who were 65 years of age or older. The median age was 34.0 years. For every 100 females, there were 96.6 males, and for every 100 females age 18 and over, there were 93.4 males.
2010 census The
2010 United States census reported that South Gate had a population of 94,396. The population density was . The racial makeup of South Gate was 47,645 (50.5%) White, 3,209 (3.4%) Non-Hispanic White, 890 (0.9%) African American, 878 (0.9%) Native American, 732 (0.8%) Asian, 99 (0.1%) Pacific Islander, 40,624 (43.0%) from
other races, and 3,528 (3.7%) from two or more races. There were 89,442 residents of Hispanic or Latino ancestry, of any race (94.8%). The Census reported that 94,308 people (99.9% of the population) lived in households, 16 (0%) lived in non-institutionalized group quarters, and 72 (0.1%) were institutionalized. There were 23,278 households, out of which 13,805 (59.3%) had children under the age of 18 living in them, 13,183 (56.6%) were
opposite-sex married couples living together, 4,706 (20.2%) had a female householder with no husband present, 2,261 (9.7%) had a male householder with no wife present. There were 1,879 (8.1%)
unmarried opposite-sex partnerships, and 134 (0.6%)
same-sex married couples or partnerships. 2,292 households (9.8%) were made up of individuals, and 996 (4.3%) had someone living alone who was 65 years of age or older. The average household size was 4.05. There were 20,150
families (86.6% of all households); the average family size was 4.24. There were 29,374 residents (31.1%) under the age of 18, 11,298 (12.0%) aged 18 to 24, 28,039 (29.7%) aged 25 to 44, 19,062 (20.2%) aged 45 to 64, and 6,623 (7.0%) who were 65 years of age or older. The median age was 29.4 years. For every 100 females, there were 96.4 males. For every 100 females age 18 and over, there were 93.9 males. There were 24,160 housing units at an average density of , of which 10,658 (45.8%) were owner-occupied, and 12,620 (54.2%) were occupied by renters. The homeowner vacancy rate was 1.5%; the rental vacancy rate was 3.6%. 46,665 people (49.4% of the population) lived in owner-occupied housing units and 47,643 people (50.5%) lived in rental housing units.
2015–2019 estimates During 2015–2019, South Gate had a median household income of $52,321, with 17.2% of the population living below the federal poverty line. For people ages 25 and over, 56.7% had a high school degree or higher while 9.4% had a bachelor's degree or higher.
Religion There are approximately 40 churches located in the City representing a variety of religious denominations. 53.4% of the people in South Gate, CA are religious. 37.0% are
Catholic; 6.7% are
Protestant; 1.6% are members of
the Church of Jesus Christ of Latter-day Saints; 5.2% are another Christian faith; 1.1% are
Jewish; 1.1% are "an eastern faith"; 0.7% are Muslim.
Demographics history Mexican and
Salvadoran are the most common ancestries in South Gate.
Homelessness According to the Greater Los Angeles Homeless Count conducted by the
Los Angeles Homeless Services Authority, South Gate reported 340 homeless individuals in 2022. Subsequent counts estimated a decrease to 112 in 2023, 134 in 2024, and 83 in 2025. ==Economy==