20640 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 20640 is African American. The majority race/ethnicity attending public schools in 20640 is African American. The current unemployment level in 20640 is 4.4%.
| Population | 10,629 |
| Population Growth Rate | 2.28% |
| Population Density | 175 People per Square Mile |
| Total Households | 3,426 |
| Percentage High Income Households | 4.9% |
| Median Household Income (2021) | $80,375 |
| Average Adjusted Gross Income (2021) | $340,680 |
| Current Unemployment Rate (May 2026) | 4.4% |
| Sales Tax Rate (2025) | 6.0% |
| Majority Race/Ethnicty | African American - 53.04% |
| Public School Majority Race/Ethnicty | African American - 59.05% |
20640 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 4,203 | 38.9% |
| Black | 5,727 | 53% |
| Hispanic | 472 | 4.37% |
| Asian | 348 | 3.22% |
| Native American | 47 | 0.43% |
| Hawaiian/Pac. Islander | 9 | 0.08% |
20640 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 651 | 21.53% |
| Black | 1,958 | 64.77% |
| Hispanic | 322 | 10.65% |
| Asian | 71 | 2.35% |
| Native American | 13 | 0.43% |
| Hawaiian/Pac. Islander | 8 | 0.26% |
20640 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
| Less Than 1 Year of College | 659 | 11.55% |
| Bachelor Degree | 700 | 12.27% |
| High School Diploma | 1,829 | 32.07% |
| No High School Diploma | 88 | 1.54% |
| GED or Alternate | 318 | 5.58% |
| 1 or More Years of College | 1,499 | 26.28% |
| Associates Degree | 382 | 6.7% |
| Masters Degree | 194 | 3.4% |
| Professional Degree | 17 | 0.3% |
| Doctorate Degree | 18 | 0.32% |