21131 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 21131 is White. The majority race/ethnicity attending public schools in 21131 is White. The current unemployment level in 21131 is 4.4%.
| Population | 7,722 |
| Population Growth Rate | 0.00% |
| Population Density | 324 People per Square Mile |
| Total Households | 2,396 |
| Percentage High Income Households | 29.3% |
| Median Household Income (2021) | $163,370 |
| Average Adjusted Gross Income (2021) | $624,490 |
| Current Unemployment Rate (May 2026) | 4.4% |
| Sales Tax Rate (2025) | 6.0% |
| Majority Race/Ethnicty | White - 93.85% |
| Public School Majority Race/Ethnicty | White - 85.63% |
21131 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 7,137 | 93.85% |
| Black | 23 | 0.3% |
| Hispanic | 259 | 3.41% |
| Asian | 128 | 1.68% |
| Native American | 58 | 0.76% |
| Hawaiian/Pac. Islander | 0 | 0% |
21131 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 411 | 89.35% |
| Black | 7 | 1.52% |
| Hispanic | 20 | 4.35% |
| Asian | 22 | 4.78% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
21131 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
| Less Than 1 Year of College | 198 | 4.43% |
| Bachelor Degree | 1,501 | 33.6% |
| High School Diploma | 624 | 13.97% |
| No High School Diploma | 31 | 0.69% |
| GED or Alternate | 45 | 1.01% |
| 1 or More Years of College | 517 | 11.57% |
| Associates Degree | 285 | 6.38% |
| Masters Degree | 893 | 19.99% |
| Professional Degree | 280 | 6.27% |
| Doctorate Degree | 93 | 2.08% |