| | Gladstone, MI | Greenwood, LA | United States |
| Population | 5,210 | 3,155 | 329,725,481 |
| Female Population | 48.4% | 46.1% | 50.5% |
| Male Population | 51.7% | 53.9% | 49.5% |
| Median Age | 37.6 | 51.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 4,945 | 3,227 | 309,327,143 |
| Population - 2000 | 5,032 | 2,458 | 285,036,114 |
| Population - 1990 | 4,565 | 2,092 | 251,960,433 |
| Pop. 2000 to Now | -7.4% | 25.6% | 15.6% |
| Pop. 1990 to Now | 2.1% | 47.6% | 30.8% |
| space4 | | | |
| Population Density | 1,029.4 | 351.5 | 93.4 |
| Land Area | 5.1 | 9.0 | 3,531,905.4 |
| Water Area | 2.9 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Gladstone, MI | Greenwood, LA | United States |
| Age 0 to 4 | 5.7% | 2.9% | 5.9% |
| Age 5 to 9 | 7.5% | 4.0% | 6.1% |
| Age 10 to 14 | 5.0% | 4.0% | 6.6% |
| Age 15 to 17 | 6.3% | 3.3% | 3.9% |
| Age 18 to 20 | 4.8% | 2.5% | 4.0% |
| Age 21 to 24 | 6.5% | 2.2% | 5.2% |
| Age 25 to 34 | 12.1% | 10.1% | 13.8% |
| Age 35 to 44 | 10.6% | 14.4% | 12.9% |
| Age 45 to 54 | 12.9% | 13.3% | 12.6% |
| Age 55 to 59 | 5.9% | 10.2% | 6.7% |
| Age 60 to 64 | 6.4% | 7.9% | 6.3% |
| Age 65 to 74 | 7.3% | 18.4% | 9.6% |
| Age 75 to 84 | 6.8% | 6.6% | 4.5% |
| Age 85 and over | 2.3% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Gladstone, MI | Greenwood, LA | United States |
| White | 94.7% | 61.3% | 59.4% |
| Black | 0.2% | 28.6% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.7% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.0% | 0.4% |
| Two or More Races | 3.2% | 2.6% | 3.2% |
| Hispanic | 0.9% | 7.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Gladstone, MI | Greenwood, LA | United States |
| Married Population | 44.5% | 64.6% | 49.8% |
| Currently Married | 42.1% | 63.1% | 48.0% |
| Married but Separated | 2.4% | 1.5% | 1.8% |
| Single Population | 55.5% | 35.4% | 50.2% |
| Never Married | 35.6% | 21.1% | 33.8% |
| Divorced | 11.5% | 8.0% | 10.8% |
| Widowed | 8.3% | 6.4% | 5.6% |
| space5 | | | |
| Household Size | 2.76 | 2.23 | 2.60 |
| Households | 1,880 | 1,415 | 124,010,992 |
| Family Households | 1,272 | 997 | 80,755,759 |
| Married couple, w/children | 22.8% | 26.4% | 30.5% |
| Married couple, no children | 44.4% | 63.4% | 42.9% |
| Non Family Households | 608 | 418 | 43,255,233 |
| Single householder, w/children | 22.6% | 7.0% | 15.8% |
| Single householder, no children | 10.1% | 3.2% | 10.8% |