| | Jena, LA | New Iberia, LA | United States |
| Population | 3,697 | 28,844 | 329,725,481 |
| Female Population | 48.8% | 50.4% | 50.5% |
| Male Population | 51.2% | 49.6% | 49.5% |
| Median Age | 39.7 | 34.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,390 | 30,600 | 309,327,143 |
| Population - 2000 | 2,971 | 32,623 | 285,036,114 |
| Population - 1990 | 2,626 | 31,828 | 251,960,433 |
| Pop. 2000 to Now | 15.5% | -14.1% | 15.6% |
| Pop. 1990 to Now | 30.6% | -11.9% | 30.8% |
| space4 | | | |
| Population Density | 672.4 | 2,589.5 | 93.4 |
| Land Area | 5.5 | 11.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Jena, LA | New Iberia, LA | United States |
| Age 0 to 4 | 6.7% | 9.4% | 5.9% |
| Age 5 to 9 | 2.2% | 7.8% | 6.1% |
| Age 10 to 14 | 4.7% | 7.6% | 6.6% |
| Age 15 to 17 | 6.7% | 3.3% | 3.9% |
| Age 18 to 20 | 2.1% | 3.9% | 4.0% |
| Age 21 to 24 | 6.2% | 4.7% | 5.2% |
| Age 25 to 34 | 14.2% | 14.0% | 13.8% |
| Age 35 to 44 | 13.2% | 11.1% | 12.9% |
| Age 45 to 54 | 13.5% | 12.3% | 12.6% |
| Age 55 to 59 | 4.5% | 4.8% | 6.7% |
| Age 60 to 64 | 10.7% | 6.7% | 6.3% |
| Age 65 to 74 | 8.6% | 8.8% | 9.6% |
| Age 75 to 84 | 5.8% | 3.9% | 4.5% |
| Age 85 and over | 0.9% | 1.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Jena, LA | New Iberia, LA | United States |
| White | 78.8% | 47.6% | 59.4% |
| Black | 5.8% | 42.9% | 12.2% |
| Asian | 5.5% | 1.0% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 0.2% | 4.0% | 3.2% |
| Hispanic | 9.7% | 4.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Jena, LA | New Iberia, LA | United States |
| Married Population | 50.3% | 43.1% | 49.8% |
| Currently Married | 49.0% | 39.6% | 48.0% |
| Married but Separated | 1.3% | 3.5% | 1.8% |
| Single Population | 49.7% | 56.9% | 50.2% |
| Never Married | 31.4% | 38.9% | 33.8% |
| Divorced | 12.9% | 11.9% | 10.8% |
| Widowed | 5.4% | 6.1% | 5.6% |
| space5 | | | |
| Household Size | 2.67 | 2.53 | 2.60 |
| Households | 1,229 | 11,253 | 124,010,992 |
| Family Households | 919 | 7,284 | 80,755,759 |
| Married couple, w/children | 22.0% | 21.5% | 30.5% |
| Married couple, no children | 43.1% | 32.4% | 42.9% |
| Non Family Households | 310 | 3,969 | 43,255,233 |
| Single householder, w/children | 27.1% | 31.8% | 15.8% |
| Single householder, no children | 7.8% | 14.3% | 10.8% |