Editing Placentia, California (section)

=== 2010 ===
The [[2010 United States Census]]<ref>{{cite web|url=http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0657526|archive-url=https://archive.today/20140715032504/http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0657526|url-status=dead|archive-date=July 15, 2014|title=2010 Census Interactive Population Search: CA – Placentia city|publisher=U.S. Census Bureau|access-date=July 12, 2014}}</ref> reported that Placentia had a population of 50,533. The [[population density]] was {{convert|7,677.0|/mi2|/km2|disp=preunit|people&nbsp;|people|}}. The [[Race (United States Census)|racial makeup]] of Placentia was:

* 31,373 (62.1%) White (44.7% Non-Hispanic White)<ref name="census">{{cite web|url=http://quickfacts.census.gov/qfd/states/06/0657526.html|title=Census Data|access-date=December 18, 2013|archive-url=https://web.archive.org/web/20150402095245/http://quickfacts.census.gov/qfd/states/06/0657526.html|archive-date=April 2, 2015|url-status=dead}}</ref> 
* 914 (1.8%) African American
* 386 (0.8%) Native American
* 7,531 (14.9%) Asian
* 74 (0.1%) Pacific Islander
* 8,247 (16.3%) from other races
* 2,008 (4.0%) from two or more races 
* 18,416 residents (36.4%) were Hispanic or Latino, of any race.

The census reported that 50,196 people (99.3% of the population) lived in households, 253 (0.5%) lived in noninstitutionalized group quarters, and 84 (0.2%) were institutionalized.

Of the 16,365 households, 38.6% had children under 18 living in them, 57.4% were opposite-sex married couples living together, 12.6% had a female householder with no husband present, 5.5% had a male householder with no wife present, 4.6% were [[POSSLQ|unmarried opposite-sex partnerships]], and 0.6% were [[same-sex partnerships|same-sex married couples or partnerships]]. About 17.6% of households were made up of individuals, and 7.8% had someone living alone who was 65 or older. The average household size was 3.07. There were 12,366 [[family (U.S. Census)|families]] (75.6% of all households); the average family size was 3.44.

In the city, the age distribution was 24.6% under 18, 10.3% from 18 to 24, 27.6% from 25 to 44, 24.9% from 45 to 64, and 12.6% were 65 or older. The median age was 36.0 years. For every 100 females, there were 97.0 males. For every 100 females 18 and over, there were 93.7 males.

The 16,872 housing units had an average density of {{convert|2,563.2|/mi2|/km2|disp=preunit|units&nbsp;|units|}}, of which 10,681 (65.3%) were owner-occupied and 5,684 (34.7%) were occupied by renters. The homeowner vacancy rate was 0.8%; the rental vacancy rate was 4.7%. About 62.9% of the population lived in owner-occupied housing units and 36.5% lived in rental housing units.

The [[median household income]] was $75,693, with 12.2% of the population living below the federal poverty line.<ref name="census" />