| | Atwood, KS | Pomona, CA | United States |
| Population | 1,187 | 151,592 | 329,725,481 |
| Female Population | 50.2% | 50.9% | 50.5% |
| Male Population | 49.8% | 49.1% | 49.5% |
| Median Age | 46.2 | 33.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,184 | 149,293 | 309,327,143 |
| Population - 2000 | 1,279 | 149,473 | 285,036,114 |
| Population - 1990 | 1,388 | 131,723 | 251,960,433 |
| Pop. 2000 to Now | -5.6% | -0.2% | 15.6% |
| Pop. 1990 to Now | -13.0% | 13.3% | 30.8% |
| space4 | | | |
| Population Density | 1,141.4 | 6,601.9 | 93.4 |
| Land Area | 1.0 | 23.0 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Atwood, KS | Pomona, CA | United States |
| Age 0 to 4 | 6.0% | 6.9% | 5.9% |
| Age 5 to 9 | 6.7% | 6.2% | 6.1% |
| Age 10 to 14 | 5.7% | 7.2% | 6.6% |
| Age 15 to 17 | 2.5% | 4.4% | 3.9% |
| Age 18 to 20 | 0.3% | 5.6% | 4.0% |
| Age 21 to 24 | 1.2% | 6.5% | 5.2% |
| Age 25 to 34 | 17.3% | 14.5% | 13.8% |
| Age 35 to 44 | 8.9% | 13.1% | 12.9% |
| Age 45 to 54 | 13.8% | 13.4% | 12.6% |
| Age 55 to 59 | 6.2% | 5.0% | 6.7% |
| Age 60 to 64 | 6.7% | 5.4% | 6.3% |
| Age 65 to 74 | 8.5% | 7.1% | 9.6% |
| Age 75 to 84 | 11.0% | 3.2% | 4.5% |
| Age 85 and over | 5.1% | 1.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Atwood, KS | Pomona, CA | United States |
| White | 82.6% | 10.3% | 59.4% |
| Black | 1.1% | 5.5% | 12.2% |
| Asian | 0.3% | 10.6% | 5.6% |
| Native American | 0.0% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 2.3% | 1.5% | 3.2% |
| Hispanic | 13.7% | 71.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Atwood, KS | Pomona, CA | United States |
| Married Population | 61.3% | 43.9% | 49.8% |
| Currently Married | 59.9% | 40.9% | 48.0% |
| Married but Separated | 1.3% | 2.9% | 1.8% |
| Single Population | 38.7% | 56.1% | 50.2% |
| Never Married | 15.3% | 43.1% | 33.8% |
| Divorced | 15.6% | 8.4% | 10.8% |
| Widowed | 7.9% | 4.6% | 5.6% |
| space5 | | | |
| Household Size | 2.12 | 3.56 | 2.60 |
| Households | 546 | 41,457 | 124,010,992 |
| Family Households | 349 | 31,541 | 80,755,759 |
| Married couple, w/children | 30.9% | 31.8% | 30.5% |
| Married couple, no children | 49.3% | 32.0% | 42.9% |
| Non Family Households | 197 | 9,916 | 43,255,233 |
| Single householder, w/children | 19.8% | 21.1% | 15.8% |
| Single householder, no children | 0.0% | 15.1% | 10.8% |