21042 can be classified socioeconomically as Upper Middle Class class compared to other ZIP Codes in Maryland based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 21042 is White. The majority race/ethnicity attending public schools in 21042 is Asian. The current unemployment level in 21042 is 3.8%.
| Population | 42,528 |
| Population Growth Rate | 6.35% |
| Population Density | 1,141 People per Square Mile |
| Total Households | 13,368 |
| Percentage High Income Households | 26.5% |
| Median Household Income (2021) | $159,032 |
| Average Adjusted Gross Income (2021) | $472,250 |
| Current Unemployment Rate (September 2025) | 3.8% |
| Sales Tax Rate (2025) | 6.0% |
| Majority Race/Ethnicty | White - 60.52% |
| Public School Majority Race/Ethnicty | Asian - 39.35% |
21042 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 25,252 | 60.37% |
| Black | 2,202 | 5.26% |
| Hispanic | 1,500 | 3.59% |
| Asian | 12,705 | 30.38% |
| Native American | 64 | 0.15% |
| Hawaiian/Pac. Islander | 103 | 0.25% |
21042 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 3,653 | 40.29% |
| Black | 1,006 | 11.1% |
| Hispanic | 602 | 6.64% |
| Asian | 3,761 | 41.48% |
| Native American | 30 | 0.33% |
| Hawaiian/Pac. Islander | 14 | 0.15% |
21042 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
|---|
| Less Than 1 Year of College | 904 | 3.42% |
| Bachelor Degree | 9,102 | 34.46% |
| High School Diploma | 2,879 | 10.9% |
| No High School Diploma | 174 | 0.66% |
| GED or Alternate | 188 | 0.71% |
| 1 or More Years of College | 2,497 | 9.45% |
| Associates Degree | 1,380 | 5.23% |
| Masters Degree | 6,016 | 22.78% |
| Professional Degree | 1,767 | 6.69% |
| Doctorate Degree | 1,504 | 5.69% |