| | Calais, ME | Banning, CA | United States |
| Population | 3,010 | 29,664 | 329,725,481 |
| Female Population | 52.2% | 51.5% | 50.5% |
| Male Population | 47.8% | 48.5% | 49.5% |
| Median Age | 51.2 | 43.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,120 | 28,794 | 309,327,143 |
| Population - 2000 | 3,447 | 23,562 | 285,036,114 |
| Population - 1990 | 3,963 | 20,570 | 251,960,433 |
| Pop. 2000 to Now | -12.2% | 28.9% | 15.6% |
| Pop. 1990 to Now | -23.6% | 47.7% | 30.8% |
| space4 | | | |
| Population Density | 87.7 | 1,274.8 | 93.4 |
| Land Area | 34.3 | 23.3 | 3,531,905.4 |
| Water Area | 5.8 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Calais, ME | Banning, CA | United States |
| Age 0 to 4 | 6.5% | 6.9% | 5.9% |
| Age 5 to 9 | 1.9% | 6.0% | 6.1% |
| Age 10 to 14 | 1.6% | 7.0% | 6.6% |
| Age 15 to 17 | 4.0% | 3.9% | 3.9% |
| Age 18 to 20 | 3.8% | 3.6% | 4.0% |
| Age 21 to 24 | 3.7% | 3.8% | 5.2% |
| Age 25 to 34 | 7.4% | 10.2% | 13.8% |
| Age 35 to 44 | 9.8% | 10.8% | 12.9% |
| Age 45 to 54 | 14.1% | 9.8% | 12.6% |
| Age 55 to 59 | 6.1% | 5.1% | 6.7% |
| Age 60 to 64 | 12.2% | 4.8% | 6.3% |
| Age 65 to 74 | 13.6% | 12.5% | 9.6% |
| Age 75 to 84 | 11.1% | 9.6% | 4.5% |
| Age 85 and over | 4.3% | 6.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Calais, ME | Banning, CA | United States |
| White | 96.0% | 35.2% | 59.4% |
| Black | 0.4% | 6.7% | 12.2% |
| Asian | 0.5% | 4.9% | 5.6% |
| Native American | 0.8% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 1.4% | 3.2% | 3.2% |
| Hispanic | 0.8% | 49.2% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Calais, ME | Banning, CA | United States |
| Married Population | 50.7% | 48.2% | 49.8% |
| Currently Married | 49.5% | 45.8% | 48.0% |
| Married but Separated | 1.2% | 2.4% | 1.8% |
| Single Population | 49.3% | 51.8% | 50.2% |
| Never Married | 22.1% | 28.8% | 33.8% |
| Divorced | 16.8% | 12.2% | 10.8% |
| Widowed | 10.5% | 10.8% | 5.6% |
| space5 | | | |
| Household Size | 1.74 | 2.69 | 2.60 |
| Households | 1,664 | 10,912 | 124,010,992 |
| Family Households | 928 | 7,390 | 80,755,759 |
| Married couple, w/children | 16.7% | 20.7% | 30.5% |
| Married couple, no children | 57.0% | 44.2% | 42.9% |
| Non Family Households | 736 | 3,522 | 43,255,233 |
| Single householder, w/children | 21.7% | 19.9% | 15.8% |
| Single householder, no children | 4.6% | 15.2% | 10.8% |