2020 census
As of the 2020 census, Rio Dell had a population of 3,379.[17][18] The population density was 1,481.4 inhabitants per square mile (572.0/km2).[17]
The census reported that the whole population lived in households. There were 1,328 households, out of which 31.2% included children under the age of 18, 40.1% were married-couple households, 12.6% were cohabiting couple households, 28.0% had a female householder with no partner present, and 19.4% had a male householder with no partner present. 24.8% of households were one person, and 11.5% were one person aged 65 or older. The average household size was 2.54.[17] There were 861 families (64.8% of all households).[19]
The age distribution was 22.6% under the age of 18, 8.1% aged 18 to 24, 28.7% aged 25 to 44, 22.3% aged 45 to 64, and 18.3% who were 65 years of age or older. The median age was 38.0 years. For every 100 females, there were 99.4 males, and for every 100 females age 18 and over there were 96.3 males age 18 and over.[17]
There were 1,442 housing units at an average density of 632.2 units per square mile (244.1 units/km2), of which 1,328 (92.1%) were occupied. Of these, 55.1% were owner-occupied, and 44.9% were occupied by renters. 7.9% of housing units were vacant. The homeowner vacancy rate was 1.9% and the rental vacancy rate was 5.2%.[17][18]
0.0% of residents lived in urban areas, while 100.0% lived in rural areas.[20]
2010 census
At the 2010 census Rio Dell had a population of 3,368. The population density was 1,393.2 inhabitants per square mile (537.9/km2). 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%).[22]
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 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%) unmarried opposite-sex partnerships, and 13 (1.0%) 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 596.5 per square mile (230.3/km2), 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.
