02421 can be classified socioeconomically as Upper Middle Class class compared to other ZIP Codes in Massachusetts based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 02421 is White. The majority race/ethnicity attending public schools in 02421 is White. The current unemployment level in 02421 is 4.6%.
| Population | 17,865 |
| Population Growth Rate | 0.13% |
| Population Density | 1,839 People per Square Mile |
| Total Households | 6,456 |
| Percentage High Income Households | 30.9% |
| Median Household Income (2021) | $191,140 |
| Average Adjusted Gross Income (2021) | $819,840 |
| Current Unemployment Rate (May 2026) | 4.6% |
| Sales Tax Rate (2025) | 6.2% |
| Majority Race/Ethnicty | White - 62.54% |
| Public School Majority Race/Ethnicty | White - 46.97% |
02421 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 11,266 | 62.54% |
| Black | 222 | 1.23% |
| Hispanic | 571 | 3.17% |
| Asian | 5,948 | 33.02% |
| Native American | 7 | 0.04% |
| Hawaiian/Pac. Islander | 0 | 0% |
02421 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 2,448 | 50.3% |
| Black | 197 | 4.05% |
| Hispanic | 268 | 5.51% |
| Asian | 1,946 | 39.98% |
| Native American | 7 | 0.14% |
| Hawaiian/Pac. Islander | 1 | 0.02% |
02421 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
|---|
| Less Than 1 Year of College | 250 | 2.11% |
| Bachelor Degree | 3,360 | 28.39% |
| High School Diploma | 1,006 | 8.5% |
| No High School Diploma | 82 | 0.69% |
| GED or Alternate | 111 | 0.94% |
| 1 or More Years of College | 684 | 5.78% |
| Associates Degree | 350 | 2.96% |
| Masters Degree | 3,310 | 27.97% |
| Professional Degree | 941 | 7.95% |
| Doctorate Degree | 1,742 | 14.72% |