| Statistic | Oak Grove | Alabama | National |
| Population | 867 | 4,903,185 | 328,239,523 |
| Population density (sq mi) | 470 | 97 | 91 |
| Median age | 55.6 | 38.6 | 37.7 |
| Male/Female ratio | 0.9:1 | 0.9:1 | 1.0:1 |
| Married (15yrs & older) | 71% | 57% | 55% |
| Families w/ Kids under 18 | 12% | 40% | 43% |
| Speak English | 99% | 95% | 79% |
| Speak Spanish | 1% | 3% | 13% |
| Race | Oak Grove | Alabama | National |
| White | 65.74% | 68.68% | 73.35% |
| Black | 33.91% | 26.48% | 12.63% |
| Asian | 0.00% | 1.25% | 5.22% |
| American Indian | 0.00% | 0.49% | 0.82% |
| Native Hawaiian | 0.00% | 0.04% | 0.18% |
| Mixed race | 0.35% | 1.76% | 3.06% |
| Other race | 0.00% | 1.28% | 4.75% |
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