| | Shields, MI | Presque Isle, ME | United States |
| Population | 7,506 | 8,859 | 329,725,481 |
| Female Population | 53.4% | 52.5% | 50.5% |
| Male Population | 46.6% | 47.5% | 49.5% |
| Median Age | 47.9 | 43 | 38.4 |
| space3 | | | |
| Population - 2010 | 6,821 | 9,664 | 309,327,143 |
| Population - 2000 | 6,590 | 9,511 | 285,036,114 |
| Population - 1990 | 6,634 | 10,550 | 251,960,433 |
| Pop. 2000 to Now | -11.2% | -5.9% | 15.6% |
| Pop. 1990 to Now | -11.8% | -15.2% | 30.8% |
| space4 | | | |
| Population Density | 1,167.5 | 116.9 | 93.4 |
| Land Area | 6.4 | 75.8 | 3,531,905.4 |
| Water Area | 0.2 | 1.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Shields, MI | Presque Isle, ME | United States |
| Age 0 to 4 | 3.9% | 5.6% | 5.9% |
| Age 5 to 9 | 4.5% | 4.9% | 6.1% |
| Age 10 to 14 | 6.1% | 4.1% | 6.6% |
| Age 15 to 17 | 3.4% | 3.7% | 3.9% |
| Age 18 to 20 | 3.9% | 3.7% | 4.0% |
| Age 21 to 24 | 2.1% | 4.2% | 5.2% |
| Age 25 to 34 | 7.7% | 14.2% | 13.8% |
| Age 35 to 44 | 14.2% | 10.9% | 12.9% |
| Age 45 to 54 | 12.7% | 11.6% | 12.6% |
| Age 55 to 59 | 6.2% | 9.0% | 6.7% |
| Age 60 to 64 | 9.1% | 6.5% | 6.3% |
| Age 65 to 74 | 13.5% | 10.4% | 9.6% |
| Age 75 to 84 | 9.2% | 6.9% | 4.5% |
| Age 85 and over | 3.5% | 4.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Shields, MI | Presque Isle, ME | United States |
| White | 91.1% | 90.8% | 59.4% |
| Black | 0.7% | 1.3% | 12.2% |
| Asian | 2.8% | 1.0% | 5.6% |
| Native American | 0.0% | 2.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 1.7% | 2.6% | 3.2% |
| Hispanic | 3.7% | 1.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Shields, MI | Presque Isle, ME | United States |
| Married Population | 56.5% | 48.1% | 49.8% |
| Currently Married | 54.7% | 46.1% | 48.0% |
| Married but Separated | 1.7% | 1.9% | 1.8% |
| Single Population | 43.5% | 51.9% | 50.2% |
| Never Married | 26.4% | 28.7% | 33.8% |
| Divorced | 9.5% | 13.3% | 10.8% |
| Widowed | 7.6% | 9.9% | 5.6% |
| space5 | | | |
| Household Size | 2.37 | 2.03 | 2.60 |
| Households | 3,112 | 4,157 | 124,010,992 |
| Family Households | 2,084 | 2,212 | 80,755,759 |
| Married couple, w/children | 26.9% | 22.0% | 30.5% |
| Married couple, no children | 50.2% | 53.3% | 42.9% |
| Non Family Households | 1,028 | 1,945 | 43,255,233 |
| Single householder, w/children | 7.8% | 18.6% | 15.8% |
| Single householder, no children | 15.1% | 6.0% | 10.8% |