| | Portland, MI | Cheboygan, MI | United States |
| Population | 3,940 | 4,797 | 329,725,481 |
| Female Population | 52.6% | 48.5% | 50.5% |
| Male Population | 47.4% | 51.5% | 49.5% |
| Median Age | 36.9 | 41 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,884 | 4,848 | 309,327,143 |
| Population - 2000 | 3,789 | 5,295 | 285,036,114 |
| Population - 1990 | 3,889 | 4,999 | 251,960,433 |
| Pop. 2000 to Now | 5.9% | -11.3% | 15.6% |
| Pop. 1990 to Now | 3.1% | -6.0% | 30.8% |
| space4 | | | |
| Population Density | 1,498.7 | 705.9 | 93.4 |
| Land Area | 2.6 | 6.8 | 3,531,905.4 |
| Water Area | 0.1 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Portland, MI | Cheboygan, MI | United States |
| Age 0 to 4 | 2.8% | 4.3% | 5.9% |
| Age 5 to 9 | 7.8% | 4.8% | 6.1% |
| Age 10 to 14 | 6.0% | 8.3% | 6.6% |
| Age 15 to 17 | 3.1% | 3.8% | 3.9% |
| Age 18 to 20 | 4.0% | 3.6% | 4.0% |
| Age 21 to 24 | 3.4% | 3.1% | 5.2% |
| Age 25 to 34 | 19.7% | 11.8% | 13.8% |
| Age 35 to 44 | 14.7% | 12.6% | 12.9% |
| Age 45 to 54 | 8.9% | 9.9% | 12.6% |
| Age 55 to 59 | 5.7% | 7.6% | 6.7% |
| Age 60 to 64 | 9.6% | 7.0% | 6.3% |
| Age 65 to 74 | 8.1% | 13.5% | 9.6% |
| Age 75 to 84 | 5.3% | 7.7% | 4.5% |
| Age 85 and over | 1.0% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Portland, MI | Cheboygan, MI | United States |
| White | 89.8% | 87.8% | 59.4% |
| Black | 1.6% | 1.9% | 12.2% |
| Asian | 4.1% | 0.8% | 5.6% |
| Native American | 0.0% | 1.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 2.2% | 3.5% | 3.2% |
| Hispanic | 2.2% | 4.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Portland, MI | Cheboygan, MI | United States |
| Married Population | 51.8% | 45.0% | 49.8% |
| Currently Married | 48.2% | 44.4% | 48.0% |
| Married but Separated | 3.6% | 0.6% | 1.8% |
| Single Population | 48.2% | 55.0% | 50.2% |
| Never Married | 30.1% | 29.5% | 33.8% |
| Divorced | 11.5% | 15.8% | 10.8% |
| Widowed | 6.6% | 9.6% | 5.6% |
| space5 | | | |
| Household Size | 2.58 | 2.39 | 2.60 |
| Households | 1,530 | 1,902 | 124,010,992 |
| Family Households | 1,082 | 1,140 | 80,755,759 |
| Married couple, w/children | 17.8% | 31.1% | 30.5% |
| Married couple, no children | 52.2% | 37.4% | 42.9% |
| Non Family Households | 448 | 762 | 43,255,233 |
| Single householder, w/children | 15.8% | 7.5% | 15.8% |
| Single householder, no children | 14.1% | 23.9% | 10.8% |