| | Bolivia, NC | West Islip, NY | United States |
| Population | 194 | 27,557 | 329,725,481 |
| Female Population | 51.6% | 48.9% | 50.5% |
| Male Population | 48.5% | 51.1% | 49.5% |
| Median Age | 43.9 | 40.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 143 | 28,692 | 309,327,143 |
| Population - 2000 | 148 | 28,907 | 285,036,114 |
| Population - 1990 | 228 | 28,419 | 251,960,433 |
| Pop. 2000 to Now | 4.1% | -7.3% | 15.6% |
| Pop. 1990 to Now | -32.5% | -5.7% | 30.8% |
| space4 | | | |
| Population Density | 305.0 | 4,372.1 | 93.4 |
| Land Area | 0.6 | 6.3 | 3,531,905.4 |
| Water Area | 0.0 | 0.5 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Bolivia, NC | West Islip, NY | United States |
| Age 0 to 4 | 1.5% | 6.4% | 5.9% |
| Age 5 to 9 | 7.2% | 5.3% | 6.1% |
| Age 10 to 14 | 4.1% | 5.6% | 6.6% |
| Age 15 to 17 | 4.1% | 3.7% | 3.9% |
| Age 18 to 20 | 9.3% | 3.5% | 4.0% |
| Age 21 to 24 | 0.0% | 6.5% | 5.2% |
| Age 25 to 34 | 10.3% | 12.3% | 13.8% |
| Age 35 to 44 | 13.9% | 12.4% | 12.9% |
| Age 45 to 54 | 5.2% | 15.0% | 12.6% |
| Age 55 to 59 | 4.1% | 8.5% | 6.7% |
| Age 60 to 64 | 7.7% | 6.9% | 6.3% |
| Age 65 to 74 | 18.0% | 8.3% | 9.6% |
| Age 75 to 84 | 10.8% | 4.0% | 4.5% |
| Age 85 and over | 3.6% | 1.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Bolivia, NC | West Islip, NY | United States |
| White | 97.4% | 86.2% | 59.4% |
| Black | 2.6% | 0.7% | 12.2% |
| Asian | 0.0% | 1.9% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 0.0% | 1.5% | 3.2% |
| Hispanic | 0.0% | 9.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Bolivia, NC | West Islip, NY | United States |
| Married Population | 53.8% | 56.9% | 49.8% |
| Currently Married | 53.8% | 55.7% | 48.0% |
| Married but Separated | 0.0% | 1.2% | 1.8% |
| Single Population | 46.2% | 43.1% | 50.2% |
| Never Married | 21.9% | 31.6% | 33.8% |
| Divorced | 17.2% | 6.3% | 10.8% |
| Widowed | 7.1% | 5.2% | 5.6% |
| space5 | | | |
| Household Size | 2.69 | 3.16 | 2.60 |
| Households | 72 | 8,607 | 124,010,992 |
| Family Households | 51 | 7,024 | 80,755,759 |
| Married couple, w/children | 27.5% | 37.2% | 30.5% |
| Married couple, no children | 47.1% | 46.6% | 42.9% |
| Non Family Households | 21 | 1,583 | 43,255,233 |
| Single householder, w/children | 13.7% | 8.8% | 15.8% |
| Single householder, no children | 11.8% | 7.4% | 10.8% |