Editing Quincy, California (section)

===2010===
At the [[2010 United States Census|2010 census]] Quincy had a population of 1,728. The population density was {{convert|407.6|PD/sqmi|PD/km2|sp=us|adj=off}}. The racial makeup of Quincy was 1,500 (86.8%) White, 132 (7.6%) Hispanic or Latino of any race, 37 (2.1%) Black, 29 (1.7%) Native American, 19 (1.1%) Asian, 2 (0.1%) Pacific Islander, 66 (3.8%) from other races, and 75 (4.3%) from two or more races.<ref>{{cite web|url=http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0659080|archive-url=https://archive.today/20140715040252/http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0659080|url-status=dead|archive-date=July 15, 2014|title=2010 Census Interactive Population Search: CA – Quincy CDP|publisher=U.S. Census Bureau|access-date=July 12, 2014}}</ref>

The census reported that 1,673 people (96.8% of the population) lived in households, no one lived in non-institutionalized group quarters and 55 (3.2%) were institutionalized.

There were 798 households, 183 (22.9%) had children under the age of 18 living in them, 300 (37.6%) were [[marriage|opposite-sex married couples]] living together, 85 (10.7%) had a female householder with no husband present, 28 (3.5%) had a male householder with no wife present. There were 63 (7.9%) [[POSSLQ|unmarried opposite-sex partnerships]], and 5 (0.6%) [[same-sex partnerships|same-sex married couples or partnerships]]. 314 households (39.3%) were one person and 93 (11.7%) had someone living alone who was 65 or older. The average household size was 2.10. There were 413 families (51.8% of households); the average family size was 2.77.

The age distribution was 341 people (19.7%) under the age of 18, 163 people (9.4%) aged 18 to 24, 350 people (20.3%) aged 25 to 44, 556 people (32.2%) aged 45 to 64, and 318 people (18.4%) who were 65 or older. The median age was 45.5 years. For every 100 females, there were 84.2 males. For every 100 females age 18 and over, there were 81.1 males.

There were 872 housing units at an average density of 205.7 per square mile, of the occupied units 388 (48.6%) were owner-occupied and 410 (51.4%) were rented. The homeowner vacancy rate was 2.7%; the rental vacancy rate was 5.5%. 872 people (50.5% of the population) lived in owner-occupied housing units and 801 people (46.4%) lived in rental housing units.