| | Timonium, MD | Lutherville, MD | United States |
| Population | 11,136 | 6,755 | 329,725,481 |
| Female Population | 50.8% | 48.0% | 50.5% |
| Male Population | 49.2% | 52.0% | 49.5% |
| Median Age | 48.5 | 42.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 9,773 | 6,227 | 309,327,143 |
| Population - 2000 | 9,522 | 6,005 | 285,036,114 |
| Population - 1990 | 9,990 | 6,273 | 251,960,433 |
| Pop. 2000 to Now | 10.5% | 13.8% | 15.6% |
| Pop. 1990 to Now | 5.4% | 9.0% | 30.8% |
| space4 | | | |
| Population Density | 2,079.9 | 3,195.4 | 93.4 |
| Land Area | 5.4 | 2.1 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Timonium, MD | Lutherville, MD | United States |
| Age 0 to 4 | 3.8% | 4.2% | 5.9% |
| Age 5 to 9 | 5.4% | 5.4% | 6.1% |
| Age 10 to 14 | 5.6% | 9.1% | 6.6% |
| Age 15 to 17 | 5.7% | 2.7% | 3.9% |
| Age 18 to 20 | 2.3% | 3.7% | 4.0% |
| Age 21 to 24 | 2.5% | 2.1% | 5.2% |
| Age 25 to 34 | 10.9% | 11.6% | 13.8% |
| Age 35 to 44 | 10.0% | 13.1% | 12.9% |
| Age 45 to 54 | 12.6% | 14.2% | 12.6% |
| Age 55 to 59 | 5.9% | 6.5% | 6.7% |
| Age 60 to 64 | 11.8% | 7.9% | 6.3% |
| Age 65 to 74 | 9.2% | 11.7% | 9.6% |
| Age 75 to 84 | 8.0% | 5.2% | 4.5% |
| Age 85 and over | 6.3% | 2.4% | 1.9% |
| space1 | | | |
| Race | | | |
| | Timonium, MD | Lutherville, MD | United States |
| White | 79.5% | 77.3% | 59.4% |
| Black | 5.8% | 2.7% | 12.2% |
| Asian | 9.4% | 11.9% | 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 | 3.1% | 4.4% | 3.2% |
| Hispanic | 2.2% | 3.8% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Timonium, MD | Lutherville, MD | United States |
| Married Population | 56.6% | 58.9% | 49.8% |
| Currently Married | 55.9% | 57.6% | 48.0% |
| Married but Separated | 0.6% | 1.4% | 1.8% |
| Single Population | 43.4% | 41.1% | 50.2% |
| Never Married | 27.1% | 29.6% | 33.8% |
| Divorced | 7.0% | 6.8% | 10.8% |
| Widowed | 9.3% | 4.6% | 5.6% |
| space5 | | | |
| Household Size | 2.60 | 2.69 | 2.60 |
| Households | 3,985 | 2,508 | 124,010,992 |
| Family Households | 2,855 | 1,897 | 80,755,759 |
| Married couple, w/children | 33.7% | 35.0% | 30.5% |
| Married couple, no children | 53.1% | 45.9% | 42.9% |
| Non Family Households | 1,130 | 611 | 43,255,233 |
| Single householder, w/children | 6.4% | 11.5% | 15.8% |
| Single householder, no children | 6.8% | 7.6% | 10.8% |