| | Big River, CA | Wenden, AZ | United States |
| Population | 1,115 | 456 | 329,725,481 |
| Female Population | 46.0% | 35.5% | 50.5% |
| Male Population | 54.0% | 64.5% | 49.5% |
| Median Age | 57.7 | 47.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,212 | 651 | 309,327,143 |
| Population - 2000 | 1,266 | 556 | 285,036,114 |
| Population - 1990 | 705 | 420 | 251,960,433 |
| Pop. 2000 to Now | -15.7% | -32.0% | 15.6% |
| Pop. 1990 to Now | 51.4% | -10.0% | 30.8% |
| space4 | | | |
| Population Density | 103.0 | 30.5 | 93.4 |
| Land Area | 10.8 | 14.9 | 3,531,905.4 |
| Water Area | 0.5 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Big River, CA | Wenden, AZ | United States |
| Age 0 to 4 | 3.4% | 1.8% | 5.9% |
| Age 5 to 9 | 2.2% | 8.6% | 6.1% |
| Age 10 to 14 | 6.4% | 0.0% | 6.6% |
| Age 15 to 17 | 1.4% | 0.0% | 3.9% |
| Age 18 to 20 | 1.2% | 0.0% | 4.0% |
| Age 21 to 24 | 3.4% | 0.2% | 5.2% |
| Age 25 to 34 | 3.0% | 0.7% | 13.8% |
| Age 35 to 44 | 7.4% | 30.5% | 12.9% |
| Age 45 to 54 | 12.3% | 18.4% | 12.6% |
| Age 55 to 59 | 16.4% | 5.7% | 6.7% |
| Age 60 to 64 | 12.8% | 11.0% | 6.3% |
| Age 65 to 74 | 15.9% | 18.6% | 9.6% |
| Age 75 to 84 | 10.4% | 0.0% | 4.5% |
| Age 85 and over | 3.9% | 4.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Big River, CA | Wenden, AZ | United States |
| White | 82.5% | 15.8% | 59.4% |
| Black | 0.5% | 7.5% | 12.2% |
| Asian | 0.6% | 1.3% | 5.6% |
| Native American | 1.0% | 4.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 2.9% | 0.0% | 3.2% |
| Hispanic | 12.5% | 71.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Big River, CA | Wenden, AZ | United States |
| Married Population | 49.9% | 81.4% | 49.8% |
| Currently Married | 49.3% | 69.7% | 48.0% |
| Married but Separated | 0.6% | 11.7% | 1.8% |
| Single Population | 50.1% | 18.6% | 50.2% |
| Never Married | 18.3% | 1.2% | 33.8% |
| Divorced | 20.2% | 5.9% | 10.8% |
| Widowed | 11.6% | 11.5% | 5.6% |
| space5 | | | |
| Household Size | 2.06 | 1.48 | 2.60 |
| Households | 540 | 307 | 124,010,992 |
| Family Households | 298 | 119 | 80,755,759 |
| Married couple, w/children | 14.4% | 40.3% | 30.5% |
| Married couple, no children | 55.0% | 59.7% | 42.9% |
| Non Family Households | 242 | 188 | 43,255,233 |
| Single householder, w/children | 16.8% | 0.0% | 15.8% |
| Single householder, no children | 13.8% | 0.0% | 10.8% |