2020 census As of the
2020 census, San Jacinto had a population of 53,898. The population density was . The median age was 32.4 years. 29.5% of residents were under the age of 18 and 11.7% were 65 years of age or older. For every 100 females, there were 94.9 males, and for every 100 females age 18 and over, there were 91.5 males. The census reported that 99.5% of the population lived in households, 0.4% lived in non-institutionalized group quarters, and 0.1% were institutionalized. In addition, 96.7% of residents lived in urban areas, while 3.3% lived in rural areas. There were 15,201 households, out of which 47.0% had children under the age of 18 living in them. Of all households, 50.5% were married-couple households, 8.2% were
cohabiting couple households, 26.1% had a female householder with no partner present, and 15.2% had a male householder with no partner present. 16.8% of households were one person, and 8.4% had someone living alone who was 65 years of age or older. The average household size was 3.53. There were 11,845 families (77.9% of all households).
2010 census The
2010 United States census reported that San Jacinto had a population of 44,199. The population density was . The racial makeup of San Jacinto was 25,272 (57.2%)
White (35.1% Non-Hispanic White), 2,928 (6.6%)
African American, 812 (1.8%)
Native American, 1,341 (3.0%)
Asian, 124 (0.3%)
Pacific Islander, 11,208 (25.4%) from
other races, and 2,514 (5.7%) from two or more races.
Hispanic or
Latino of any race were 23,109 persons (52.3%). The Census reported that 43,971 people (99.5% of the population) lived in households, 169 (0.4%) lived in non-institutionalized group quarters, and 59 (0.1%) were institutionalized. There were 13,152 households, out of which 6,460 (49.1%) had children under the age of 18 living in them, 6,954 (52.9%) were
opposite-sex married couples living together, 2,121 (16.1%) had a female householder with no husband present, 912 (6.9%) had a male householder with no wife present. There were 938 (7.1%)
unmarried opposite-sex partnerships, and 111 (0.8%)
same-sex married couples or partnerships. 2,459 households (18.7%) were made up of individuals, and 1,231 (9.4%) had someone living alone who was 65 years of age or older. The average household size was 3.34. There were 9,987
families (75.9% of all households); the average family size was 3.81. The population was spread out, with 14,487 people (32.8%) under the age of 18, 4,404 people (10.0%) aged 18 to 24, 11,885 people (26.9%) aged 25 to 44, 8,755 people (19.8%) aged 45 to 64, and 4,668 people (10.6%) who were 65 years of age or older. The median age was 30.3 years. For every 100 females, there were 95.6 males. For every 100 females age 18 and over, there were 91.4 males. There were 14,977 housing units at an average density of , of which 8,943 (68.0%) were owner-occupied, and 4,209 (32.0%) were occupied by renters. The homeowner vacancy rate was 5.7%; the rental vacancy rate was 10.3%. 28,777 people (65.1% of the population) lived in owner-occupied housing units and 15,194 people (34.4%) lived in rental housing units. According to the 2010 United States Census, San Jacinto had a median household income of $47,453, with 18.9% of the population living below the federal poverty line. ==Government==