| | Niland, CA | Mecca, CA | United States |
| Population | 452 | 4,451 | 329,725,481 |
| Female Population | 44.9% | 49.5% | 50.5% |
| Male Population | 55.1% | 50.5% | 49.5% |
| Median Age | 32.8 | 49.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,306 | 7,872 | 309,327,143 |
| Population - 2000 | 1,143 | 5,402 | 285,036,114 |
| Population - 1990 | 1,183 | 1,966 | 251,960,433 |
| Pop. 2000 to Now | -39.1% | 55.1% | 15.6% |
| Pop. 1990 to Now | -41.2% | 326.3% | 30.8% |
| space4 | | | |
| Population Density | 1,124.4 | 639.6 | 93.4 |
| Land Area | 0.4 | 7.0 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Niland, CA | Mecca, CA | United States |
| Age 0 to 4 | 22.8% | 1.7% | 5.9% |
| Age 5 to 9 | 10.4% | 4.2% | 6.1% |
| Age 10 to 14 | 5.1% | 2.2% | 6.6% |
| Age 15 to 17 | 0.0% | 1.8% | 3.9% |
| Age 18 to 20 | 0.0% | 1.1% | 4.0% |
| Age 21 to 24 | 8.6% | 3.3% | 5.2% |
| Age 25 to 34 | 4.0% | 19.2% | 13.8% |
| Age 35 to 44 | 10.0% | 10.2% | 12.9% |
| Age 45 to 54 | 30.8% | 17.7% | 12.6% |
| Age 55 to 59 | 0.0% | 11.7% | 6.7% |
| Age 60 to 64 | 0.0% | 12.4% | 6.3% |
| Age 65 to 74 | 4.0% | 13.8% | 9.6% |
| Age 75 to 84 | 0.0% | 0.0% | 4.5% |
| Age 85 and over | 4.4% | 0.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Niland, CA | Mecca, CA | United States |
| White | 4.0% | 0.0% | 59.4% |
| Black | 39.4% | 0.0% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 1.6% | 3.2% |
| Hispanic | 56.6% | 98.4% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Niland, CA | Mecca, CA | United States |
| Married Population | 27.6% | 66.3% | 49.8% |
| Currently Married | 27.6% | 63.8% | 48.0% |
| Married but Separated | 0.0% | 2.5% | 1.8% |
| Single Population | 72.4% | 33.7% | 50.2% |
| Never Married | 0.0% | 29.2% | 33.8% |
| Divorced | 58.8% | 2.2% | 10.8% |
| Widowed | 13.6% | 2.3% | 5.6% |
| space5 | | | |
| Household Size | 1.75 | 2.10 | 2.60 |
| Households | 259 | 2,123 | 124,010,992 |
| Family Households | 57 | 1,155 | 80,755,759 |
| Married couple, w/children | 31.6% | 9.3% | 30.5% |
| Married couple, no children | 0.0% | 65.7% | 42.9% |
| Non Family Households | 202 | 968 | 43,255,233 |
| Single householder, w/children | 68.4% | 6.1% | 15.8% |
| Single householder, no children | 0.0% | 18.9% | 10.8% |