21821 can be classified socioeconomically as Lower 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 21821 is White. The majority race/ethnicity attending public schools in 21821 is White. The current unemployment level in 21821 is 4.4%.
| Population | 765 |
| Population Growth Rate | -26.58% |
| Population Density | 35 People per Square Mile |
| Total Households | 416 |
| Median Household Income (2021) | $36,875 |
| Average Adjusted Gross Income (2021) | $201,870 |
| Current Unemployment Rate (May 2026) | 4.4% |
| Sales Tax Rate (2025) | 6.0% |
| Majority Race/Ethnicty | White - 90.52% |
| Public School Majority Race/Ethnicty | White - 80.99% |
21821 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 659 | 90.52% |
| Black | 48 | 6.59% |
| Hispanic | 21 | 2.88% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
21821 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 98 | 83.76% |
| Black | 9 | 7.69% |
| Hispanic | 5 | 4.27% |
| Asian | 5 | 4.27% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
21821 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
|---|
| Less Than 1 Year of College | 30 | 5.08% |
| Bachelor Degree | 47 | 7.97% |
| High School Diploma | 225 | 38.14% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 64 | 10.85% |
| 1 or More Years of College | 83 | 14.07% |
| Associates Degree | 88 | 14.92% |
| Masters Degree | 40 | 6.78% |
| Professional Degree | 13 | 2.2% |
| Doctorate Degree | 0 | 0% |