| | Marion, KY | Ogden, UT | United States |
| Population | 2,876 | 86,110 | 329,725,481 |
| Female Population | 49.2% | 48.1% | 50.5% |
| Male Population | 50.8% | 51.9% | 49.5% |
| Median Age | 47.2 | 32.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,024 | 83,107 | 309,327,143 |
| Population - 2000 | 3,196 | 77,226 | 285,036,114 |
| Population - 1990 | 3,320 | 63,909 | 251,960,433 |
| Pop. 2000 to Now | -10.8% | 13.2% | 15.6% |
| Pop. 1990 to Now | -14.2% | 36.7% | 30.8% |
| space4 | | | |
| Population Density | 865.0 | 3,159.9 | 93.4 |
| Land Area | 3.3 | 27.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Marion, KY | Ogden, UT | United States |
| Age 0 to 4 | 5.9% | 7.0% | 5.9% |
| Age 5 to 9 | 3.7% | 7.1% | 6.1% |
| Age 10 to 14 | 6.4% | 6.7% | 6.6% |
| Age 15 to 17 | 1.5% | 3.9% | 3.9% |
| Age 18 to 20 | 3.7% | 3.8% | 4.0% |
| Age 21 to 24 | 5.7% | 7.2% | 5.2% |
| Age 25 to 34 | 7.1% | 18.0% | 13.8% |
| Age 35 to 44 | 12.8% | 13.3% | 12.9% |
| Age 45 to 54 | 16.6% | 10.4% | 12.6% |
| Age 55 to 59 | 4.4% | 6.4% | 6.7% |
| Age 60 to 64 | 7.3% | 5.0% | 6.3% |
| Age 65 to 74 | 14.2% | 7.3% | 9.6% |
| Age 75 to 84 | 8.4% | 2.7% | 4.5% |
| Age 85 and over | 2.2% | 1.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Marion, KY | Ogden, UT | United States |
| White | 92.4% | 61.9% | 59.4% |
| Black | 2.1% | 1.8% | 12.2% |
| Asian | 0.0% | 1.4% | 5.6% |
| Native American | 0.0% | 0.7% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.2% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 2.3% | 3.5% | 3.2% |
| Hispanic | 3.2% | 30.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Marion, KY | Ogden, UT | United States |
| Married Population | 37.4% | 46.8% | 49.8% |
| Currently Married | 34.6% | 44.5% | 48.0% |
| Married but Separated | 2.8% | 2.3% | 1.8% |
| Single Population | 62.6% | 53.2% | 50.2% |
| Never Married | 25.2% | 33.8% | 33.8% |
| Divorced | 20.1% | 15.2% | 10.8% |
| Widowed | 17.3% | 4.3% | 5.6% |
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| Household Size | 2.45 | 2.66 | 2.60 |
| Households | 1,077 | 31,506 | 124,010,992 |
| Family Households | 550 | 19,791 | 80,755,759 |
| Married couple, w/children | 24.9% | 33.8% | 30.5% |
| Married couple, no children | 37.1% | 35.9% | 42.9% |
| Non Family Households | 527 | 11,715 | 43,255,233 |
| Single householder, w/children | 18.2% | 20.7% | 15.8% |
| Single householder, no children | 19.8% | 9.6% | 10.8% |