| | El Rio, CA | Colton, CA | United States |
| Population | 6,447 | 53,894 | 329,725,481 |
| Female Population | 50.2% | 51.0% | 50.5% |
| Male Population | 49.8% | 49.0% | 49.5% |
| Median Age | 35.1 | 31.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 6,159 | 52,220 | 309,327,143 |
| Population - 2000 | 6,193 | 47,662 | 285,036,114 |
| Population - 1990 | 6,419 | 40,213 | 251,960,433 |
| Pop. 2000 to Now | 16.2% | 14.7% | 15.6% |
| Pop. 1990 to Now | 12.1% | 35.9% | 30.8% |
| space4 | | | |
| Population Density | 3,185.3 | 3,467.6 | 93.4 |
| Land Area | 2.0 | 15.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | El Rio, CA | Colton, CA | United States |
| Age 0 to 4 | 5.1% | 7.1% | 5.9% |
| Age 5 to 9 | 7.0% | 7.6% | 6.1% |
| Age 10 to 14 | 10.9% | 7.5% | 6.6% |
| Age 15 to 17 | 5.1% | 4.5% | 3.9% |
| Age 18 to 20 | 1.6% | 4.5% | 4.0% |
| Age 21 to 24 | 4.9% | 5.7% | 5.2% |
| Age 25 to 34 | 15.2% | 17.7% | 13.8% |
| Age 35 to 44 | 10.7% | 13.2% | 12.9% |
| Age 45 to 54 | 15.6% | 11.2% | 12.6% |
| Age 55 to 59 | 8.3% | 6.2% | 6.7% |
| Age 60 to 64 | 5.4% | 4.2% | 6.3% |
| Age 65 to 74 | 7.3% | 7.0% | 9.6% |
| Age 75 to 84 | 1.8% | 2.7% | 4.5% |
| Age 85 and over | 1.3% | 1.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | El Rio, CA | Colton, CA | United States |
| White | 16.0% | 13.2% | 59.4% |
| Black | 0.4% | 8.7% | 12.2% |
| Asian | 0.0% | 3.3% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.9% | 0.2% |
| Other | 0.7% | 1.0% | 0.4% |
| Two or More Races | 0.1% | 1.4% | 3.2% |
| Hispanic | 82.8% | 71.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | El Rio, CA | Colton, CA | United States |
| Married Population | 46.4% | 46.6% | 49.8% |
| Currently Married | 44.0% | 45.0% | 48.0% |
| Married but Separated | 2.5% | 1.6% | 1.8% |
| Single Population | 53.6% | 53.4% | 50.2% |
| Never Married | 41.4% | 40.9% | 33.8% |
| Divorced | 7.6% | 8.1% | 10.8% |
| Widowed | 4.6% | 4.5% | 5.6% |
| space5 | | | |
| Household Size | 3.73 | 3.21 | 2.60 |
| Households | 1,723 | 16,709 | 124,010,992 |
| Family Households | 1,433 | 12,880 | 80,755,759 |
| Married couple, w/children | 24.9% | 30.3% | 30.5% |
| Married couple, no children | 42.4% | 29.9% | 42.9% |
| Non Family Households | 290 | 3,829 | 43,255,233 |
| Single householder, w/children | 19.3% | 24.2% | 15.8% |
| Single householder, no children | 13.3% | 15.6% | 10.8% |