| | Grambling, LA | Monroe, LA | United States |
| Population | 5,127 | 48,105 | 329,725,481 |
| Female Population | 47.4% | 51.6% | 50.5% |
| Male Population | 52.6% | 48.4% | 49.5% |
| Median Age | 22.6 | 34.3 | 38.4 |
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| Population - 2010 | 5,006 | 48,951 | 309,327,143 |
| Population - 2000 | 4,693 | 53,107 | 285,036,114 |
| Population - 1990 | 5,484 | 54,909 | 251,960,433 |
| Pop. 2000 to Now | 9.0% | -11.5% | 15.6% |
| Pop. 1990 to Now | -6.8% | -14.4% | 30.8% |
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| Population Density | 869.1 | 1,642.1 | 93.4 |
| Land Area | 5.9 | 29.3 | 3,531,905.4 |
| Water Area | 0.0 | 3.3 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Grambling, LA | Monroe, LA | United States |
| Age 0 to 4 | 3.4% | 6.9% | 5.9% |
| Age 5 to 9 | 8.6% | 6.8% | 6.1% |
| Age 10 to 14 | 4.0% | 7.0% | 6.6% |
| Age 15 to 17 | 4.2% | 5.1% | 3.9% |
| Age 18 to 20 | 21.9% | 5.8% | 4.0% |
| Age 21 to 24 | 14.9% | 6.0% | 5.2% |
| Age 25 to 34 | 7.2% | 13.1% | 13.8% |
| Age 35 to 44 | 12.3% | 11.8% | 12.9% |
| Age 45 to 54 | 3.2% | 10.5% | 12.6% |
| Age 55 to 59 | 4.9% | 6.8% | 6.7% |
| Age 60 to 64 | 3.0% | 5.3% | 6.3% |
| Age 65 to 74 | 4.1% | 8.2% | 9.6% |
| Age 75 to 84 | 2.5% | 3.6% | 4.5% |
| Age 85 and over | 5.7% | 3.1% | 1.9% |
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| Race | | | |
| | Grambling, LA | Monroe, LA | United States |
| White | 6.9% | 35.3% | 59.4% |
| Black | 91.6% | 59.6% | 12.2% |
| Asian | 0.2% | 1.1% | 5.6% |
| Native American | 0.0% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.0% | 1.1% | 0.4% |
| Two or More Races | 0.4% | 0.8% | 3.2% |
| Hispanic | 1.0% | 1.9% | 18.4% |
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| Marriage & Family | | | |
| | Grambling, LA | Monroe, LA | United States |
| Married Population | 22.2% | 32.3% | 49.8% |
| Currently Married | 18.9% | 29.0% | 48.0% |
| Married but Separated | 3.3% | 3.3% | 1.8% |
| Single Population | 77.8% | 67.7% | 50.2% |
| Never Married | 63.0% | 49.1% | 33.8% |
| Divorced | 6.3% | 10.8% | 10.8% |
| Widowed | 8.5% | 7.7% | 5.6% |
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| Household Size | 2.60 | 2.50 | 2.60 |
| Households | 1,781 | 17,914 | 124,010,992 |
| Family Households | 797 | 9,507 | 80,755,759 |
| Married couple, w/children | 31.1% | 20.6% | 30.5% |
| Married couple, no children | 19.1% | 29.3% | 42.9% |
| Non Family Households | 984 | 8,407 | 43,255,233 |
| Single householder, w/children | 28.9% | 32.8% | 15.8% |
| Single householder, no children | 21.0% | 17.3% | 10.8% |