| | Belle Chasse, LA | Colt, AR | United States |
| Population | 10,406 | 361 | 329,725,481 |
| Female Population | 53.0% | 51.5% | 50.5% |
| Male Population | 47.0% | 48.5% | 49.5% |
| Median Age | 40 | 35.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 14,920 | 379 | 309,327,143 |
| Population - 2000 | 9,848 | 368 | 285,036,114 |
| Population - 1990 | 8,512 | 334 | 251,960,433 |
| Pop. 2000 to Now | 35.9% | -10.1% | 15.6% |
| Pop. 1990 to Now | 57.2% | -0.9% | 30.8% |
| space4 | | | |
| Population Density | 417.6 | 287.0 | 93.4 |
| Land Area | 24.9 | 1.3 | 3,531,905.4 |
| Water Area | 3.5 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Belle Chasse, LA | Colt, AR | United States |
| Age 0 to 4 | 4.2% | 6.9% | 5.9% |
| Age 5 to 9 | 4.9% | 9.4% | 6.1% |
| Age 10 to 14 | 10.0% | 0.6% | 6.6% |
| Age 15 to 17 | 5.2% | 0.0% | 3.9% |
| Age 18 to 20 | 3.2% | 1.9% | 4.0% |
| Age 21 to 24 | 3.6% | 10.2% | 5.2% |
| Age 25 to 34 | 12.3% | 20.2% | 13.8% |
| Age 35 to 44 | 13.9% | 5.5% | 12.9% |
| Age 45 to 54 | 13.7% | 16.3% | 12.6% |
| Age 55 to 59 | 7.5% | 16.6% | 6.7% |
| Age 60 to 64 | 7.2% | 5.3% | 6.3% |
| Age 65 to 74 | 8.9% | 3.6% | 9.6% |
| Age 75 to 84 | 3.4% | 3.3% | 4.5% |
| Age 85 and over | 1.9% | 0.0% | 1.9% |
| space1 | | | |
| Race | | | |
| | Belle Chasse, LA | Colt, AR | United States |
| White | 84.6% | 76.5% | 59.4% |
| Black | 8.0% | 10.0% | 12.2% |
| Asian | 1.6% | 0.0% | 5.6% |
| Native American | 1.3% | 3.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.1% | 4.4% | 3.2% |
| Hispanic | 4.5% | 6.1% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Belle Chasse, LA | Colt, AR | United States |
| Married Population | 58.1% | 42.7% | 49.8% |
| Currently Married | 55.1% | 41.3% | 48.0% |
| Married but Separated | 3.0% | 1.3% | 1.8% |
| Single Population | 41.9% | 57.3% | 50.2% |
| Never Married | 25.8% | 40.7% | 33.8% |
| Divorced | 12.5% | 10.7% | 10.8% |
| Widowed | 3.6% | 6.0% | 5.6% |
| space5 | | | |
| Household Size | 2.97 | 2.09 | 2.60 |
| Households | 3,489 | 173 | 124,010,992 |
| Family Households | 2,826 | 82 | 80,755,759 |
| Married couple, w/children | 32.4% | 24.4% | 30.5% |
| Married couple, no children | 47.9% | 34.1% | 42.9% |
| Non Family Households | 663 | 91 | 43,255,233 |
| Single householder, w/children | 10.2% | 35.4% | 15.8% |
| Single householder, no children | 9.5% | 6.1% | 10.8% |