| | Long Beach, IN | Dune Acres, IN | United States |
| Population | 1,102 | 265 | 329,725,481 |
| Female Population | 49.4% | 49.4% | 50.5% |
| Male Population | 50.6% | 50.6% | 49.5% |
| Median Age | 62 | 59.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,155 | 182 | 309,327,143 |
| Population - 2000 | 1,559 | 213 | 285,036,114 |
| Population - 1990 | 2,044 | 263 | 251,960,433 |
| Pop. 2000 to Now | -26.9% | -14.6% | 15.6% |
| Pop. 1990 to Now | -44.3% | -30.8% | 30.8% |
| space4 | | | |
| Population Density | 1,025.1 | 124.6 | 93.4 |
| Land Area | 1.1 | 2.1 | 3,531,905.4 |
| Water Area | 2.1 | 1.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Long Beach, IN | Dune Acres, IN | United States |
| Age 0 to 4 | 2.2% | 4.2% | 5.9% |
| Age 5 to 9 | 0.9% | 0.8% | 6.1% |
| Age 10 to 14 | 2.1% | 1.1% | 6.6% |
| Age 15 to 17 | 3.2% | 0.8% | 3.9% |
| Age 18 to 20 | 0.7% | 3.0% | 4.0% |
| Age 21 to 24 | 1.6% | 1.5% | 5.2% |
| Age 25 to 34 | 4.1% | 5.7% | 13.8% |
| Age 35 to 44 | 5.0% | 3.8% | 12.9% |
| Age 45 to 54 | 11.3% | 14.0% | 12.6% |
| Age 55 to 59 | 13.3% | 18.5% | 6.7% |
| Age 60 to 64 | 14.6% | 8.7% | 6.3% |
| Age 65 to 74 | 23.9% | 19.2% | 9.6% |
| Age 75 to 84 | 12.5% | 12.1% | 4.5% |
| Age 85 and over | 4.6% | 6.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Long Beach, IN | Dune Acres, IN | United States |
| White | 99.2% | 92.5% | 59.4% |
| Black | 0.0% | 0.0% | 12.2% |
| Asian | 0.5% | 5.3% | 5.6% |
| Native American | 0.1% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.4% | 0.4% |
| Two or More Races | 0.0% | 0.0% | 3.2% |
| Hispanic | 0.3% | 1.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Long Beach, IN | Dune Acres, IN | United States |
| Married Population | 72.7% | 59.0% | 49.8% |
| Currently Married | 71.5% | 59.0% | 48.0% |
| Married but Separated | 1.2% | 0.0% | 1.8% |
| Single Population | 27.3% | 41.0% | 50.2% |
| Never Married | 12.2% | 14.5% | 33.8% |
| Divorced | 8.0% | 17.7% | 10.8% |
| Widowed | 7.0% | 8.8% | 5.6% |
| space5 | | | |
| Household Size | 2.01 | 2.21 | 2.60 |
| Households | 549 | 120 | 124,010,992 |
| Family Households | 382 | 69 | 80,755,759 |
| Married couple, w/children | 14.4% | 18.8% | 30.5% |
| Married couple, no children | 75.4% | 79.7% | 42.9% |
| Non Family Households | 167 | 51 | 43,255,233 |
| Single householder, w/children | 0.0% | 0.0% | 15.8% |
| Single householder, no children | 10.2% | 1.4% | 10.8% |