| | Canton, KS | Galva, KS | United States |
| Population | 614 | 1,170 | 329,725,481 |
| Female Population | 39.7% | 49.9% | 50.5% |
| Male Population | 60.3% | 50.1% | 49.5% |
| Median Age | 36.3 | 40.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 748 | 872 | 309,327,143 |
| Population - 2000 | 829 | 701 | 285,036,114 |
| Population - 1990 | 794 | 651 | 251,960,433 |
| Pop. 2000 to Now | -17.0% | 26.5% | 15.6% |
| Pop. 1990 to Now | -13.4% | 36.3% | 30.8% |
| space4 | | | |
| Population Density | 1,235.4 | 2,344.7 | 93.4 |
| Land Area | 0.5 | 0.5 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Canton, KS | Galva, KS | United States |
| Age 0 to 4 | 3.6% | 6.8% | 5.9% |
| Age 5 to 9 | 13.5% | 3.8% | 6.1% |
| Age 10 to 14 | 3.9% | 6.0% | 6.6% |
| Age 15 to 17 | 8.3% | 6.5% | 3.9% |
| Age 18 to 20 | 4.4% | 3.3% | 4.0% |
| Age 21 to 24 | 1.0% | 3.7% | 5.2% |
| Age 25 to 34 | 13.7% | 12.2% | 13.8% |
| Age 35 to 44 | 13.8% | 15.0% | 12.9% |
| Age 45 to 54 | 10.1% | 19.3% | 12.6% |
| Age 55 to 59 | 9.6% | 4.5% | 6.7% |
| Age 60 to 64 | 8.3% | 3.4% | 6.3% |
| Age 65 to 74 | 7.5% | 11.4% | 9.6% |
| Age 75 to 84 | 1.1% | 2.8% | 4.5% |
| Age 85 and over | 1.1% | 1.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Canton, KS | Galva, KS | United States |
| White | 87.5% | 96.8% | 59.4% |
| Black | 5.2% | 0.4% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 5.5% | 0.3% | 3.2% |
| Hispanic | 1.8% | 2.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Canton, KS | Galva, KS | United States |
| Married Population | 51.5% | 65.6% | 49.8% |
| Currently Married | 51.5% | 64.7% | 48.0% |
| Married but Separated | 0.0% | 0.9% | 1.8% |
| Single Population | 48.5% | 34.4% | 50.2% |
| Never Married | 27.0% | 22.5% | 33.8% |
| Divorced | 15.9% | 6.8% | 10.8% |
| Widowed | 5.6% | 5.1% | 5.6% |
| space5 | | | |
| Household Size | 2.59 | 2.43 | 2.60 |
| Households | 237 | 482 | 124,010,992 |
| Family Households | 154 | 390 | 80,755,759 |
| Married couple, w/children | 24.0% | 27.9% | 30.5% |
| Married couple, no children | 46.8% | 57.2% | 42.9% |
| Non Family Households | 83 | 92 | 43,255,233 |
| Single householder, w/children | 24.0% | 9.7% | 15.8% |
| Single householder, no children | 5.2% | 5.1% | 10.8% |