21156 can be classified socioeconomically as 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 21156 is White. The current unemployment level in 21156 is 4.4%.
| Population | 362 |
| Population Growth Rate | 20.95% |
| Population Density | 328 People per Square Mile |
| Total Households | 147 |
| Percentage High Income Households | 6.8% |
| Median Household Income (2021) | $117,750 |
| Average Adjusted Gross Income (2021) | $311,830 |
| Current Unemployment Rate (May 2026) | 4.4% |
| Sales Tax Rate (2025) | 6.0% |
| Majority Race/Ethnicty | White - 97.19% |
21156 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 346 | 97.19% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 10 | 2.81% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
21156 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
| Less Than 1 Year of College | 18 | 6.9% |
| Bachelor Degree | 47 | 18.01% |
| High School Diploma | 64 | 24.52% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 10 | 3.83% |
| 1 or More Years of College | 31 | 11.88% |
| Associates Degree | 30 | 11.49% |
| Masters Degree | 53 | 20.31% |
| Professional Degree | 8 | 3.07% |
| Doctorate Degree | 0 | 0% |