Editing Grand Terrace, California (section)

=== 2010 ===
The [[2010 United States census]]<ref>{{cite web|url=http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0630658|archive-url=https://archive.today/20140715025155/http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0630658|url-status=dead|archive-date=July 15, 2014|title=2010 Census Interactive Population Search: CA - Grand Terrace city|publisher=U.S. Census Bureau|access-date=July 12, 2014}}</ref> reported that Grand Terrace had a population of 12,040. The population density was {{convert|3,438.0|PD/sqmi|PD/km2|sp=us|adj=off}}. The [[Race and ethnicity in the United States census|racial makeup]] of Grand Terrace was 7,912 (65.7%) White (46.4% Non-Hispanic White),<ref name="quickfacts.census.gov">{{Cite web |url=http://quickfacts.census.gov/qfd/states/06/0630658.html |title=Grand Terrace (City) QuickFacts from the US Census Bureau |access-date=December 25, 2013 |archive-url=https://web.archive.org/web/20150329005157/http://quickfacts.census.gov/qfd/states/06/0630658.html |archive-date=March 29, 2015 |url-status=dead}}</ref> 673 (5.6%) African American, 120 (1.0%) Native American, 778 (6.5%) Asian, 32 (0.3%) Pacific Islander, 1,898 (15.8%) from other races, and 627 (5.2%) from two or more races. Hispanic or Latino of any race were 4,708 persons (39.1%).

The census reported that 11,927 people (99.1% of the population) lived in households, 50 (0.4%) lived in non-institutionalized group quarters, and 63 (0.5%) were institutionalized.

There were 4,403 households, of which 1,548 (35.2%) had children under the age of 18 living in them, 2,214 (50.3%) were [[marriage|opposite-sex married couples]] living together, 599 (13.6%) had a female householder with no husband present, 254 (5.8%) had a male householder with no wife present. There were 285 (6.5%) [[POSSLQ|unmarried opposite-sex partnerships]], and 26 (0.6%) [[Domestic partnership|same-sex married couples or partnerships]]. 1,026 households (23.3%) were made up of individuals, and 395 (9.0%) had someone living alone who was 65 years of age or older. The average household size was 2.71. There were 3,067 [[family (U.S. census)|families]] (69.7% of all households); the average family size was 3.20.

2,781 people (23.1% of the population) were under the age of 18, 1,244 people (10.3%) aged 18 to 24, 3,320 people (27.6%) aged 25 to 44, 3,195 people (26.5%) aged 45 to 64, and 1,500 people (12.5%) who were 65 years of age or older. The median age was 36.1 years. For every 100 females, there were 92.9 males. For every 100 females age 18 and over, there were 89.6 males.

There were 4,649 housing units at an average density of {{convert|1,327.5|/sqmi|/km2|sp=us|adj=off}}, of which 2,790 (63.4%) were owner-occupied, and 1,613 (36.6%) were occupied by renters. The homeowner vacancy rate was 1.7%; the rental vacancy rate was 7.0%. 7,848 people (65.2% of the population) lived in owner-occupied housing units and 4,079 people (33.9%) lived in rental housing units.

According to the 2010 United States Census, Grand Terrace had a median household income of $64,073, with 6.5% of the population living below the federal poverty line.<ref name="quickfacts.census.gov" />