| | Harrah, OK | Waterloo, IN | United States |
| Population | 6,155 | 2,029 | 329,725,481 |
| Female Population | 49.0% | 49.3% | 50.5% |
| Male Population | 51.0% | 50.7% | 49.5% |
| Median Age | 36 | 33.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,083 | 2,224 | 309,327,143 |
| Population - 2000 | 4,719 | 2,200 | 285,036,114 |
| Population - 1990 | 4,206 | 2,040 | 251,960,433 |
| Pop. 2000 to Now | 40.4% | 3.0% | 15.6% |
| Pop. 1990 to Now | 57.6% | 11.1% | 30.8% |
| space4 | | | |
| Population Density | 500.0 | 958.4 | 93.4 |
| Land Area | 12.3 | 2.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Harrah, OK | Waterloo, IN | United States |
| Age 0 to 4 | 5.8% | 9.6% | 5.9% |
| Age 5 to 9 | 9.9% | 5.4% | 6.1% |
| Age 10 to 14 | 7.6% | 5.2% | 6.6% |
| Age 15 to 17 | 5.1% | 4.0% | 3.9% |
| Age 18 to 20 | 4.2% | 6.1% | 4.0% |
| Age 21 to 24 | 2.5% | 9.8% | 5.2% |
| Age 25 to 34 | 13.8% | 12.2% | 13.8% |
| Age 35 to 44 | 12.8% | 16.0% | 12.9% |
| Age 45 to 54 | 11.8% | 10.7% | 12.6% |
| Age 55 to 59 | 5.3% | 5.8% | 6.7% |
| Age 60 to 64 | 6.0% | 5.8% | 6.3% |
| Age 65 to 74 | 8.4% | 4.7% | 9.6% |
| Age 75 to 84 | 4.6% | 4.4% | 4.5% |
| Age 85 and over | 2.0% | 0.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Harrah, OK | Waterloo, IN | United States |
| White | 77.8% | 87.5% | 59.4% |
| Black | 0.3% | 0.0% | 12.2% |
| Asian | 3.3% | 0.7% | 5.6% |
| Native American | 5.9% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 1.0% | 0.4% |
| Two or More Races | 4.9% | 6.1% | 3.2% |
| Hispanic | 7.8% | 4.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Harrah, OK | Waterloo, IN | United States |
| Married Population | 54.7% | 46.2% | 49.8% |
| Currently Married | 54.0% | 45.4% | 48.0% |
| Married but Separated | 0.7% | 0.8% | 1.8% |
| Single Population | 45.3% | 53.8% | 50.2% |
| Never Married | 24.2% | 39.3% | 33.8% |
| Divorced | 14.0% | 11.5% | 10.8% |
| Widowed | 7.1% | 3.0% | 5.6% |
| space5 | | | |
| Household Size | 2.65 | 2.50 | 2.60 |
| Households | 2,298 | 813 | 124,010,992 |
| Family Households | 1,604 | 514 | 80,755,759 |
| Married couple, w/children | 31.6% | 38.3% | 30.5% |
| Married couple, no children | 41.2% | 27.0% | 42.9% |
| Non Family Households | 694 | 299 | 43,255,233 |
| Single householder, w/children | 19.5% | 25.1% | 15.8% |
| Single householder, no children | 7.7% | 9.5% | 10.8% |