| | Norris, TN | Birch Run, MI | United States |
| Population | 1,643 | 1,295 | 329,725,481 |
| Female Population | 56.5% | 48.6% | 50.5% |
| Male Population | 43.5% | 51.4% | 49.5% |
| Median Age | 61.3 | 47.3 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,593 | 1,553 | 309,327,143 |
| Population - 2000 | 1,446 | 1,653 | 285,036,114 |
| Population - 1990 | 1,303 | 992 | 251,960,433 |
| Pop. 2000 to Now | 11.5% | -11.1% | 15.6% |
| Pop. 1990 to Now | 23.7% | 48.1% | 30.8% |
| space4 | | | |
| Population Density | 197.2 | 687.7 | 93.4 |
| Land Area | 8.3 | 1.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Norris, TN | Birch Run, MI | United States |
| Age 0 to 4 | 0.7% | 5.8% | 5.9% |
| Age 5 to 9 | 1.3% | 4.2% | 6.1% |
| Age 10 to 14 | 4.7% | 2.4% | 6.6% |
| Age 15 to 17 | 3.0% | 4.2% | 3.9% |
| Age 18 to 20 | 1.2% | 3.2% | 4.0% |
| Age 21 to 24 | 1.8% | 7.9% | 5.2% |
| Age 25 to 34 | 7.6% | 14.9% | 13.8% |
| Age 35 to 44 | 9.1% | 5.9% | 12.9% |
| Age 45 to 54 | 12.2% | 11.5% | 12.6% |
| Age 55 to 59 | 5.1% | 6.2% | 6.7% |
| Age 60 to 64 | 9.1% | 18.4% | 6.3% |
| Age 65 to 74 | 30.9% | 10.5% | 9.6% |
| Age 75 to 84 | 11.3% | 3.6% | 4.5% |
| Age 85 and over | 1.8% | 1.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Norris, TN | Birch Run, MI | United States |
| White | 97.0% | 92.0% | 59.4% |
| Black | 0.4% | 2.6% | 12.2% |
| Asian | 0.4% | 0.0% | 5.6% |
| Native American | 0.5% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.2% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 0.5% | 3.2% |
| Hispanic | 0.5% | 4.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Norris, TN | Birch Run, MI | United States |
| Married Population | 60.7% | 42.2% | 49.8% |
| Currently Married | 58.0% | 41.6% | 48.0% |
| Married but Separated | 2.7% | 0.5% | 1.8% |
| Single Population | 39.3% | 57.8% | 50.2% |
| Never Married | 18.0% | 35.3% | 33.8% |
| Divorced | 9.1% | 14.1% | 10.8% |
| Widowed | 12.1% | 8.5% | 5.6% |
| space5 | | | |
| Household Size | 1.85 | 2.07 | 2.60 |
| Households | 828 | 627 | 124,010,992 |
| Family Households | 473 | 335 | 80,755,759 |
| Married couple, w/children | 19.2% | 19.1% | 30.5% |
| Married couple, no children | 70.2% | 47.5% | 42.9% |
| Non Family Households | 355 | 292 | 43,255,233 |
| Single householder, w/children | 5.1% | 12.8% | 15.8% |
| Single householder, no children | 5.5% | 20.6% | 10.8% |