| | Port Austin, MI | Lexington, MI | United States |
| Population | 599 | 1,098 | 329,725,481 |
| Female Population | 47.9% | 51.7% | 50.5% |
| Male Population | 52.1% | 48.3% | 49.5% |
| Median Age | 57.2 | 60.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 663 | 1,163 | 309,327,143 |
| Population - 2000 | 737 | 1,104 | 285,036,114 |
| Population - 1990 | 815 | 779 | 251,960,433 |
| Pop. 2000 to Now | -16.6% | 1.3% | 15.6% |
| Pop. 1990 to Now | -24.5% | 43.5% | 30.8% |
| space4 | | | |
| Population Density | 606.9 | 794.5 | 93.4 |
| Land Area | 1.0 | 1.4 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Port Austin, MI | Lexington, MI | United States |
| Age 0 to 4 | 3.5% | 0.6% | 5.9% |
| Age 5 to 9 | 1.5% | 1.0% | 6.1% |
| Age 10 to 14 | 3.0% | 4.3% | 6.6% |
| Age 15 to 17 | 4.5% | 1.7% | 3.9% |
| Age 18 to 20 | 2.3% | 0.3% | 4.0% |
| Age 21 to 24 | 4.7% | 4.5% | 5.2% |
| Age 25 to 34 | 9.9% | 9.6% | 13.8% |
| Age 35 to 44 | 9.2% | 8.7% | 12.9% |
| Age 45 to 54 | 8.3% | 10.8% | 12.6% |
| Age 55 to 59 | 7.7% | 6.3% | 6.7% |
| Age 60 to 64 | 8.8% | 12.3% | 6.3% |
| Age 65 to 74 | 21.0% | 23.2% | 9.6% |
| Age 75 to 84 | 12.4% | 14.0% | 4.5% |
| Age 85 and over | 3.2% | 2.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Port Austin, MI | Lexington, MI | United States |
| White | 81.8% | 91.2% | 59.4% |
| Black | 0.5% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 1.0% | 0.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 1.2% | 3.1% | 3.2% |
| Hispanic | 15.5% | 5.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Port Austin, MI | Lexington, MI | United States |
| Married Population | 34.7% | 46.8% | 49.8% |
| Currently Married | 34.1% | 45.9% | 48.0% |
| Married but Separated | 0.5% | 0.9% | 1.8% |
| Single Population | 65.3% | 53.2% | 50.2% |
| Never Married | 35.2% | 26.8% | 33.8% |
| Divorced | 23.2% | 16.7% | 10.8% |
| Widowed | 6.9% | 9.7% | 5.6% |
| space5 | | | |
| Household Size | 1.82 | 1.52 | 2.60 |
| Households | 320 | 714 | 124,010,992 |
| Family Households | 135 | 262 | 80,755,759 |
| Married couple, w/children | 8.1% | 12.2% | 30.5% |
| Married couple, no children | 61.5% | 76.3% | 42.9% |
| Non Family Households | 185 | 452 | 43,255,233 |
| Single householder, w/children | 25.2% | 11.5% | 15.8% |
| Single householder, no children | 5.2% | 0.0% | 10.8% |