Valinda first appeared as an unincorporated place in the
1970 U.S. census as part of the East San Gabriel Valley census county division; 100.0% of residents lived in urban areas, while none 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 0.0% were institutionalized. There were 5,193 households, of which 46.1% had children under the age of 18 living in them. Of all households, 56.2% were married-couple households, 6.0% were
cohabiting couple households, 14.1% were households with a male householder and no spouse or partner present, and 23.7% were households with a female householder and no spouse or partner present. About 9.0% of all households were made up of individuals and 4.5% had someone living alone who was 65 years of age or older. The average household size was 4.31, and 4,502 households (86.7% of all households) were
families. The age distribution was 22.4% under the age of 18, 10.9% aged 18 to 24, 27.9% aged 25 to 44, 25.7% aged 45 to 64, and 13.1% who were 65years of age or older. The median age was 36.0years. For every 100 females there were 97.5 males, and for every 100 females age 18 and over there were 95.8 males. 439 (1.9%) African American, 240 (1.1%) Native American, 2,718 (11.9%) Asian, 42 (0.2%) Pacific Islander, 7,530 (33.0%) from other races, and 795 (3.5%) from two or more races. Hispanic or Latino of any race were 17,977 persons (78.8%). The census reported that 22,733 people (99.6% of the population) lived in households, 83 (0.4%) lived in non-institutionalized group quarters, and 6 (0%) were institutionalized. There were 4,927 households, 2,852 (57.9%) had children under the age of 18 living in them, 3,100 (62.9%) were
opposite-sex married couples living together, 814 (16.5%) had a female householder with no husband present, 479 (9.7%) had a male householder with no wife present. There were 243 (4.9%)
unmarried opposite-sex partnerships, and 31 (0.6%)
same-sex married couples or partnerships. 375 households (7.6%) were one person and 183 (3.7%) had someone living alone who was 65 or older. The average household size was 4.61. There were 4,393 families (89.2% of households); the average family size was 4.63. The age distribution was 6,672 people (29.2%) under the age of 18, 2,651 people (11.6%) aged 18 to 24, 6,320 people (27.7%) aged 25 to 44, 5,191 people (22.7%) aged 45 to 64, and 1,988 people (8.7%) who were 65 or older. The median age was 31.7 years. For every 100 females, there were 100.5 males. For every 100 females age 18 and over, there were 98.1 males. There were 5,071 housing units at an average density of 2,517.7 per square mile, of the occupied units 3,755 (76.2%) were owner-occupied and 1,172 (23.8%) were rented. The homeowner vacancy rate was 0.9%; the rental vacancy rate was 3.3%. 17,054 people (74.7% of the population) lived in owner-occupied housing units and 5,679 people (24.9%) lived in rental housing units. According to the 2010 United States Census, Valinda had a median household income of $66,727, with 11.1% of the population living below the federal poverty line. ==Government and infrastructure==