Editing Rio Dell, California (section)

===2010===
At the [[2010 United States Census|2010 census]] Rio Dell had a population of 3,368. The population density was {{convert|1,393.2|PD/sqmi|PD/km2|sp=us|adj=off}}. The racial makeup of Rio Dell was 2,894 (85.9%) White, 13 (0.4%) African American, 125 (3.7%) Native American, 25 (0.7%) Asian, 3 (0.1%) Pacific Islander, 140 (4.2%) from other races, and 168 (5.0%) from two or more races.  Hispanic or Latino of any race were 384 people (11.4%).<ref>{{cite web|url=http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0660900|archive-url=https://archive.today/20140715032720/http://www.census.gov/2010census/popmap/ipmtext.php?fl=06:0660900|url-status=dead|archive-date=July 15, 2014|title=2010 Census Interactive Population Search: CA - Rio Dell city|publisher=U.S. Census Bureau|access-date=July 12, 2014}}</ref>

The census reported that 3,347 people (99.4% of the population) lived in households, 21 (0.6%) lived in non-institutionalized group quarters, and no one was institutionalized.

There were 1,367 households, 440 (32.2%) had children under the age of 18 living in them, 560 (41.0%) were [[marriage|opposite-sex married couples]] living together, 199 (14.6%) had a female householder with no husband present, 85 (6.2%) had a male householder with no wife present.  There were 131 (9.6%) [[POSSLQ|unmarried opposite-sex partnerships]], and 13 (1.0%) [[same-sex partnerships|same-sex married couples or partnerships]]. 409 households (29.9%) were one person and 139 (10.2%) had someone living alone who was 65 or older. The average household size was 2.45.  There were 844 families (61.7% of households); the average family size was 2.99.

The age distribution was 803 people (23.8%) under the age of 18, 309 people (9.2%) aged 18 to 24, 824 people (24.5%) aged 25 to 44, 989 people (29.4%) aged 45 to 64, and 443 people (13.2%) who were 65 or older.  The median age was 38.3 years. For every 100 females, there were 96.7 males.  For every 100 females age 18 and over, there were 91.7 males.

There were 1,442 housing units at an average density of {{convert|596.5|/sqmi|/km2|sp=us|adj=off}}, of which 1,367 were occupied, 774 (56.6%) by the owners and 593 (43.4%) by renters.  The homeowner vacancy rate was 0.6%; the rental vacancy rate was 2.8%.  1,952 people (58.0% of the population) lived in owner-occupied housing units and 1,395 people (41.4%) lived in rental housing units.