01821 can be classified socioeconomically as 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 01821 is White. The majority race/ethnicity attending public schools in 01821 is White. The current unemployment level in 01821 is 4.6%.
| Population | 30,854 |
| Population Growth Rate | 0.00% |
| Population Density | 1,828 People per Square Mile |
| Total Households | 10,743 |
| Percentage High Income Households | 4.7% |
| Median Household Income (2021) | $126,146 |
| Average Adjusted Gross Income (2021) | $349,500 |
| Current Unemployment Rate (May 2026) | 4.6% |
| Sales Tax Rate (2025) | 6.2% |
| Majority Race/Ethnicty | White - 83.23% |
| Public School Majority Race/Ethnicty | White - 78.36% |
01821 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 25,923 | 83.12% |
| Black | 1,740 | 5.58% |
| Hispanic | 902 | 2.89% |
| Asian | 2,580 | 8.27% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 44 | 0.14% |
01821 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
|---|
| White | 4,140 | 80.72% |
| Black | 236 | 4.6% |
| Hispanic | 372 | 7.25% |
| Asian | 369 | 7.19% |
| Native American | 9 | 0.18% |
| Hawaiian/Pac. Islander | 3 | 0.06% |
01821 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
|---|
| Less Than 1 Year of College | 1,143 | 5.81% |
| Bachelor Degree | 4,108 | 20.88% |
| High School Diploma | 6,529 | 33.18% |
| No High School Diploma | 187 | 0.95% |
| GED or Alternate | 516 | 2.62% |
| 1 or More Years of College | 2,721 | 13.83% |
| Associates Degree | 2,243 | 11.4% |
| Masters Degree | 1,794 | 9.12% |
| Professional Degree | 183 | 0.93% |
| Doctorate Degree | 253 | 1.29% |