| | Kaplan, LA | Owenton, KY | United States |
| Population | 4,384 | 1,829 | 329,725,481 |
| Female Population | 47.7% | 51.8% | 50.5% |
| Male Population | 52.3% | 48.2% | 49.5% |
| Median Age | 40.8 | 43.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,604 | 1,529 | 309,327,143 |
| Population - 2000 | 5,177 | 1,387 | 285,036,114 |
| Population - 1990 | 4,535 | 1,306 | 251,960,433 |
| Pop. 2000 to Now | -16.1% | 11.3% | 15.6% |
| Pop. 1990 to Now | -4.2% | 18.2% | 30.8% |
| space4 | | | |
| Population Density | 1,888.8 | 962.1 | 93.4 |
| Land Area | 2.3 | 1.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Kaplan, LA | Owenton, KY | United States |
| Age 0 to 4 | 6.8% | 7.4% | 5.9% |
| Age 5 to 9 | 5.4% | 6.5% | 6.1% |
| Age 10 to 14 | 6.2% | 3.0% | 6.6% |
| Age 15 to 17 | 4.4% | 1.5% | 3.9% |
| Age 18 to 20 | 5.3% | 1.8% | 4.0% |
| Age 21 to 24 | 6.7% | 7.0% | 5.2% |
| Age 25 to 34 | 8.7% | 12.7% | 13.8% |
| Age 35 to 44 | 9.9% | 11.0% | 12.9% |
| Age 45 to 54 | 9.8% | 12.3% | 12.6% |
| Age 55 to 59 | 7.8% | 5.9% | 6.7% |
| Age 60 to 64 | 8.8% | 6.7% | 6.3% |
| Age 65 to 74 | 7.9% | 14.2% | 9.6% |
| Age 75 to 84 | 7.4% | 6.8% | 4.5% |
| Age 85 and over | 4.8% | 3.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Kaplan, LA | Owenton, KY | United States |
| White | 89.3% | 90.5% | 59.4% |
| Black | 8.8% | 2.5% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 1.3% | 0.6% |
| Hawaiian, Pacific Islander | 1.2% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.6% | 4.2% | 3.2% |
| Hispanic | 0.0% | 1.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Kaplan, LA | Owenton, KY | United States |
| Married Population | 50.4% | 49.0% | 49.8% |
| Currently Married | 47.8% | 47.9% | 48.0% |
| Married but Separated | 2.6% | 1.1% | 1.8% |
| Single Population | 49.6% | 51.0% | 50.2% |
| Never Married | 24.7% | 26.4% | 33.8% |
| Divorced | 13.4% | 15.3% | 10.8% |
| Widowed | 11.4% | 9.3% | 5.6% |
| space5 | | | |
| Household Size | 2.43 | 2.30 | 2.60 |
| Households | 1,776 | 753 | 124,010,992 |
| Family Households | 997 | 469 | 80,755,759 |
| Married couple, w/children | 33.4% | 31.1% | 30.5% |
| Married couple, no children | 50.7% | 46.5% | 42.9% |
| Non Family Households | 779 | 284 | 43,255,233 |
| Single householder, w/children | 13.8% | 8.7% | 15.8% |
| Single householder, no children | 2.1% | 13.6% | 10.8% |