| | Nowata, OK | Newkirk, OK | United States |
| Population | 3,527 | 1,979 | 329,725,481 |
| Female Population | 51.8% | 49.7% | 50.5% |
| Male Population | 48.2% | 50.3% | 49.5% |
| Median Age | 37.3 | 37.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,717 | 2,316 | 309,327,143 |
| Population - 2000 | 3,971 | 2,243 | 285,036,114 |
| Population - 1990 | 3,896 | 2,168 | 251,960,433 |
| Pop. 2000 to Now | -10.8% | -3.6% | 15.6% |
| Pop. 1990 to Now | -9.0% | -0.3% | 30.8% |
| space4 | | | |
| Population Density | 1,051.9 | 1,501.5 | 93.4 |
| Land Area | 3.4 | 1.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Nowata, OK | Newkirk, OK | United States |
| Age 0 to 4 | 7.1% | 6.3% | 5.9% |
| Age 5 to 9 | 7.0% | 5.3% | 6.1% |
| Age 10 to 14 | 5.8% | 7.3% | 6.6% |
| Age 15 to 17 | 3.3% | 6.9% | 3.9% |
| Age 18 to 20 | 2.2% | 3.5% | 4.0% |
| Age 21 to 24 | 7.2% | 6.2% | 5.2% |
| Age 25 to 34 | 14.6% | 11.3% | 13.8% |
| Age 35 to 44 | 11.5% | 12.5% | 12.9% |
| Age 45 to 54 | 9.1% | 10.4% | 12.6% |
| Age 55 to 59 | 6.1% | 4.5% | 6.7% |
| Age 60 to 64 | 7.1% | 6.6% | 6.3% |
| Age 65 to 74 | 9.6% | 11.6% | 9.6% |
| Age 75 to 84 | 6.9% | 4.7% | 4.5% |
| Age 85 and over | 2.5% | 3.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Nowata, OK | Newkirk, OK | United States |
| White | 61.6% | 74.4% | 59.4% |
| Black | 1.2% | 0.0% | 12.2% |
| Asian | 0.8% | 0.4% | 5.6% |
| Native American | 13.8% | 10.8% | 0.6% |
| Hawaiian, Pacific Islander | 0.2% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 16.5% | 9.2% | 3.2% |
| Hispanic | 5.8% | 4.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Nowata, OK | Newkirk, OK | United States |
| Married Population | 47.7% | 44.5% | 49.8% |
| Currently Married | 44.6% | 41.4% | 48.0% |
| Married but Separated | 3.1% | 3.1% | 1.8% |
| Single Population | 52.3% | 55.5% | 50.2% |
| Never Married | 30.4% | 31.1% | 33.8% |
| Divorced | 11.7% | 15.8% | 10.8% |
| Widowed | 10.1% | 8.7% | 5.6% |
| space5 | | | |
| Household Size | 2.35 | 2.42 | 2.60 |
| Households | 1,430 | 749 | 124,010,992 |
| Family Households | 890 | 460 | 80,755,759 |
| Married couple, w/children | 28.4% | 25.4% | 30.5% |
| Married couple, no children | 42.2% | 44.3% | 42.9% |
| Non Family Households | 540 | 289 | 43,255,233 |
| Single householder, w/children | 22.4% | 22.2% | 15.8% |
| Single householder, no children | 7.0% | 8.0% | 10.8% |