| | Pentwater, MI | Lake Placid, FL | United States |
| Population | 856 | 2,433 | 329,725,481 |
| Female Population | 51.8% | 50.9% | 50.5% |
| Male Population | 48.3% | 49.1% | 49.5% |
| Median Age | 65.6 | 38 | 38.4 |
| space3 | | | |
| Population - 2010 | 859 | 2,326 | 309,327,143 |
| Population - 2000 | 958 | 1,668 | 285,036,114 |
| Population - 1990 | 1,050 | 1,158 | 251,960,433 |
| Pop. 2000 to Now | -10.4% | 49.6% | 15.6% |
| Pop. 1990 to Now | -18.3% | 115.5% | 30.8% |
| space4 | | | |
| Population Density | 639.8 | 652.3 | 93.4 |
| Land Area | 1.3 | 3.7 | 3,531,905.4 |
| Water Area | 0.4 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Pentwater, MI | Lake Placid, FL | United States |
| Age 0 to 4 | 0.8% | 4.4% | 5.9% |
| Age 5 to 9 | 1.4% | 9.1% | 6.1% |
| Age 10 to 14 | 2.2% | 7.7% | 6.6% |
| Age 15 to 17 | 3.5% | 4.6% | 3.9% |
| Age 18 to 20 | 0.5% | 2.5% | 4.0% |
| Age 21 to 24 | 1.5% | 2.8% | 5.2% |
| Age 25 to 34 | 8.8% | 16.6% | 13.8% |
| Age 35 to 44 | 3.3% | 9.2% | 12.9% |
| Age 45 to 54 | 7.2% | 9.4% | 12.6% |
| Age 55 to 59 | 9.9% | 3.8% | 6.7% |
| Age 60 to 64 | 7.7% | 6.4% | 6.3% |
| Age 65 to 74 | 31.9% | 13.9% | 9.6% |
| Age 75 to 84 | 13.1% | 7.8% | 4.5% |
| Age 85 and over | 8.2% | 1.7% | 1.9% |
| space1 | | | |
| Race | | | |
| | Pentwater, MI | Lake Placid, FL | United States |
| White | 94.7% | 30.4% | 59.4% |
| Black | 0.0% | 1.9% | 12.2% |
| Asian | 0.0% | 0.1% | 5.6% |
| Native American | 0.0% | 1.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 0.6% | 0.2% | 3.2% |
| Hispanic | 4.7% | 65.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Pentwater, MI | Lake Placid, FL | United States |
| Married Population | 67.0% | 40.8% | 49.8% |
| Currently Married | 65.6% | 38.8% | 48.0% |
| Married but Separated | 1.3% | 2.1% | 1.8% |
| Single Population | 33.0% | 59.2% | 50.2% |
| Never Married | 15.6% | 44.1% | 33.8% |
| Divorced | 8.4% | 8.5% | 10.8% |
| Widowed | 8.9% | 6.6% | 5.6% |
| space5 | | | |
| Household Size | 2.05 | 2.80 | 2.60 |
| Households | 418 | 868 | 124,010,992 |
| Family Households | 293 | 551 | 80,755,759 |
| Married couple, w/children | 4.1% | 27.2% | 30.5% |
| Married couple, no children | 82.3% | 37.0% | 42.9% |
| Non Family Households | 125 | 317 | 43,255,233 |
| Single householder, w/children | 13.7% | 33.4% | 15.8% |
| Single householder, no children | 0.0% | 2.4% | 10.8% |