La Puente first appeared as a city in the
1960 U.S. census The census reported that 37,986 people (99.8%) lived in households, 76 people (0.2%) lived in non-institutionalized group quarters, and no one was institutionalized. There were 9,703 households, of which 45.9% had children under the age of 18. Of all households, 51.6% were married-couple households, 15.2% had a male householder with no spouse or partner present, and 26.4% had a female householder with no spouse or partner present. About 11.3% of households were one person, and 5.2% had someone living alone who was 65 years of age or older. The average household size was 3.92. There were 8,139
families (83.9% of all households). There were 9,919 housing units at an average density of , of which 9,703 (97.8%) were occupied. Of these, 58.5% were owner-occupied and 41.5% were occupied by renters. The remaining 2.2% were vacant; the homeowner vacancy rate was 0.3% and the rental vacancy rate was 2.2%.
2010 census The
2010 United States census reported that La Puente had a population of 39,816. The population density was . La Puente is 49.4% White (4.6% Non-Hispanic White), 1.4% Black or African American, 1.1% Native American, 8.4% Asian, and 0.1% Pacific Islander.
Hispanic or
Latino of any race were 33,896 persons (85.1%). The Census reported that 39,773 people (99.9% of the population) lived in households, 43 (0.1%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized. There were 9,451 households, out of which 5,186 (54.9%) had children under the age of 18 living in them, 5,367 (56.8%) were
opposite-sex married couples living together, 1,824 (19.3%) had a female householder with no husband present, 930 (9.8%) had a male householder with no wife present. There were 584 (6.2%)
unmarried opposite-sex partnerships, and 65 (0.7%)
same-sex married couples or partnerships. 989 households (10.5%) were made up of individuals, and 472 (5.0%) had someone living alone who was 65 years of age or older. The average household size was 4.21. There were 8,121
families (85.9% of all households); the average family size was 4.34. The population was spread out, with 11,423 people (28.7%) under the age of 18, 4,640 people (11.7%) aged 18 to 24, 11,468 people (28.8%) aged 25 to 44, 8,619 people (21.6%) aged 45 to 64, and 3,666 people (9.2%) who were 65 years of age or older. The median age was 31.5 years. For every 100 females, there were 99.7 males. For every 100 females age 18 and over, there were 97.8 males. There were 9,761 housing units at an average density of , of which 5,693 (60.2%) were owner-occupied, and 3,758 (39.8%) were occupied by renters. The homeowner vacancy rate was 1.0%; the rental vacancy rate was 3.9%. 24,961 people (62.7% of the population) lived in owner-occupied housing units and 14,812 people (37.2%) lived in rental housing units. According to the 2010 United States census, La Puente had a median household income of $53,794, with 14.3% of the population living below the federal poverty line. ==Government==