| | West Columbia, TX | Rosenberg, TX | United States |
| Population | 3,674 | 37,871 | 329,725,481 |
| Female Population | 54.4% | 51.3% | 50.5% |
| Male Population | 45.6% | 48.7% | 49.5% |
| Median Age | 45 | 30.4 | 38.4 |
| space3 | | | |
| Population - 2010 | 3,897 | 31,391 | 309,327,143 |
| Population - 2000 | 4,255 | 24,043 | 285,036,114 |
| Population - 1990 | 4,372 | 20,183 | 251,960,433 |
| Pop. 2000 to Now | -10.0% | 63.7% | 15.6% |
| Pop. 1990 to Now | -12.4% | 95.0% | 30.8% |
| space4 | | | |
| Population Density | 1,465.5 | 1,027.2 | 93.4 |
| Land Area | 2.5 | 36.9 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | West Columbia, TX | Rosenberg, TX | United States |
| Age 0 to 4 | 4.1% | 8.6% | 5.9% |
| Age 5 to 9 | 8.1% | 8.5% | 6.1% |
| Age 10 to 14 | 6.1% | 6.4% | 6.6% |
| Age 15 to 17 | 2.2% | 3.8% | 3.9% |
| Age 18 to 20 | 3.4% | 4.8% | 4.0% |
| Age 21 to 24 | 7.5% | 7.5% | 5.2% |
| Age 25 to 34 | 8.1% | 15.7% | 13.8% |
| Age 35 to 44 | 10.6% | 14.0% | 12.9% |
| Age 45 to 54 | 17.8% | 9.1% | 12.6% |
| Age 55 to 59 | 7.4% | 4.9% | 6.7% |
| Age 60 to 64 | 3.4% | 5.3% | 6.3% |
| Age 65 to 74 | 17.0% | 6.4% | 9.6% |
| Age 75 to 84 | 2.6% | 4.0% | 4.5% |
| Age 85 and over | 1.8% | 1.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | West Columbia, TX | Rosenberg, TX | United States |
| White | 38.3% | 21.2% | 59.4% |
| Black | 23.8% | 11.5% | 12.2% |
| Asian | 0.0% | 8.1% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 0.3% | 0.4% |
| Two or More Races | 1.3% | 1.1% | 3.2% |
| Hispanic | 36.6% | 57.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | West Columbia, TX | Rosenberg, TX | United States |
| Married Population | 43.9% | 49.7% | 49.8% |
| Currently Married | 43.9% | 47.8% | 48.0% |
| Married but Separated | 0.0% | 1.9% | 1.8% |
| Single Population | 56.1% | 50.3% | 50.2% |
| Never Married | 30.4% | 35.6% | 33.8% |
| Divorced | 14.0% | 9.3% | 10.8% |
| Widowed | 11.7% | 5.4% | 5.6% |
| space5 | | | |
| Household Size | 2.75 | 2.79 | 2.60 |
| Households | 1,333 | 13,535 | 124,010,992 |
| Family Households | 948 | 9,260 | 80,755,759 |
| Married couple, w/children | 33.0% | 39.4% | 30.5% |
| Married couple, no children | 33.3% | 29.1% | 42.9% |
| Non Family Households | 385 | 4,275 | 43,255,233 |
| Single householder, w/children | 7.3% | 24.0% | 15.8% |
| Single householder, no children | 26.4% | 7.5% | 10.8% |