21645 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 21645 is White. The current unemployment level in 21645 is 4.4%.
| Population | 1,231 |
| Population Growth Rate | 14.90% |
| Population Density | 28 People per Square Mile |
| Total Households | 442 |
| Percentage High Income Households | 8.4% |
| Median Household Income (2021) | $123,500 |
| Average Adjusted Gross Income (2021) | $473,110 |
| Current Unemployment Rate (May 2026) | 4.4% |
| Sales Tax Rate (2025) | 6.0% |
| Majority Race/Ethnicty | White - 97.48% |
21645 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 1,274 | 97.48% |
| Black | 33 | 2.52% |
| Hispanic | 0 | 0% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
21645 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
| Less Than 1 Year of College | 92 | 14.6% |
| Bachelor Degree | 211 | 33.49% |
| High School Diploma | 189 | 30% |
| No High School Diploma | 13 | 2.06% |
| GED or Alternate | 23 | 3.65% |
| 1 or More Years of College | 55 | 8.73% |
| Associates Degree | 25 | 3.97% |
| Masters Degree | 22 | 3.49% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |