ZIP Code 01721
ZIP Code Tabulation Area in Middlesex County, Massachusetts.
- Population
- 18,694
- Median household income
- $127,106
- Median home value
- $586,000
+5.6%’19–’23
+2.4%’19–’23
+45.8%’19–’23
ZIP Code 01721 is a ZIP Code Tabulation Area in Middlesex County, Massachusetts, home to about 18,694 residents. At $127,106, its median household income sits in line with Middlesex County's $126,779.
From 2019 to 2023, ZIP Code 01721's population grew 5.6% from 17,710 to 18,694, while its median gross rent rose 60.4% from $1,455 to $2,334.
White (non-Hispanic) residents are the largest group, 66.0% of the population. 63.7% of workers drive to work alone.
Demographics
ACS 2019–2023- Population
- 18,694
- Median age
- 41.7 yrs
- Median household income
- $127,106
- Median home value
- $586,000
- Median gross rent
- $2,334
- Housing units
- 7,995
- Homeownership rate
- 75.5%
- Bachelor's degree or higher
- 59.5%
- Unemployment rate
- 5.1%
Trends
ACS 5-year · 2019–202317,71018,694
$124,130$127,106
$401,900$586,000
$1,455$2,334
| Year | Population | Median household income | Median home value | Median gross rent |
|---|---|---|---|---|
| 2019 | 17,710 | $124,130 | $401,900 | $1,455 |
| 2020 | 17,787 | $118,348 | $418,600 | $1,851 |
| 2021 | 18,646 | $115,959 | $435,900 | $2,018 |
| 2022 | 18,634 | $124,311 | $532,000 | $2,273 |
| 2023 | 18,694 | $127,106 | $586,000 | $2,334 |
Each year is a US Census Bureau ACS 5-year estimate ending that year.
Age distribution
Under 55.0%
5 to 1713.6%
18 to 246.2%
25 to 3414.2%
35 to 4416.3%
45 to 5412.9%
55 to 6414.5%
65 to 7410.2%
75 and over7.1%
| Count | Share | |
|---|---|---|
| Under 5 | 942 | 5.0% |
| 5 to 17 | 2,534 | 13.6% |
| 18 to 24 | 1,155 | 6.2% |
| 25 to 34 | 2,647 | 14.2% |
| 35 to 44 | 3,050 | 16.3% |
| 45 to 54 | 2,418 | 12.9% |
| 55 to 64 | 2,714 | 14.5% |
| 65 to 74 | 1,899 | 10.2% |
| 75 and over | 1,335 | 7.1% |
Race & ethnicity
| Count | Share | |
|---|---|---|
| White (non-Hispanic) | 12,344 | 66.0% |
| Black or African American | 955 | 5.1% |
| American Indian & Alaska Native | 29 | 0.2% |
| Asian | 2,813 | 15.0% |
| Native Hawaiian & Pacific Islander | 0 | 0.0% |
| Some other race | 449 | 2.4% |
| Two or more races | 686 | 3.7% |
| Hispanic or Latino (any race) | 1,418 | 7.6% |
Educational attainment (age 25+)
No high school diploma2.0%
High school graduate15.8%
Some college or associate's22.7%
Bachelor's degree30.3%
Graduate or professional degree29.2%
| Count | Share | |
|---|---|---|
| No high school diploma | 287 | 2.0% |
| High school graduate | 2,224 | 15.8% |
| Some college or associate's | 3,188 | 22.7% |
| Bachelor's degree | 4,263 | 30.3% |
| Graduate or professional degree | 4,101 | 29.2% |
Commute to work
- Mean travel time to work
- 36 min
Drove alone63.7%
Carpooled7.3%
Public transit5.6%
Walked2.0%
Bicycle0.0%
Worked from home20.9%
Other means0.6%
How workers get to work
| Count | Share | |
|---|---|---|
| Drove alone | 6,706 | 63.7% |
| Carpooled | 769 | 7.3% |
| Public transit | 586 | 5.6% |
| Walked | 206 | 2.0% |
| Bicycle | 0 | 0.0% |
| Worked from home | 2,197 | 20.9% |
| Other means | 61 | 0.6% |
Travel time
| Count | Share | |
|---|---|---|
| Under 15 min | 981 | 11.8% |
| 15 to 29 min | 2,955 | 35.5% |
| 30 to 44 min | 1,665 | 20.0% |
| 45 to 59 min | 1,155 | 13.9% |
| 60+ min | 1,572 | 18.9% |
Households
- Average household size
- 2.45
- Poverty rate
- 4.1% (761 of 18,530)
| Count | Share | |
|---|---|---|
| Family households | 5,258 | 69.4% |
| Nonfamily households | 2,315 | 30.6% |
Housing
- Median year structure built
- 1983
Occupancy
| Count | Share | |
|---|---|---|
| Occupied | 7,573 | 94.7% |
| Vacant | 422 | 5.3% |
Tenure (of occupied units)
| Count | Share | |
|---|---|---|
| Owner-occupied | 5,721 | 75.5% |
| Renter-occupied | 1,852 | 24.5% |
1-unit, detached55.7%
1-unit, attached13.8%
2 to 4 units15.1%
5 to 19 units7.1%
20 or more units8.3%
Mobile home & other0.0%
Units in structure
| Count | Share | |
|---|---|---|
| 1-unit, detached | 4,450 | 55.7% |
| 1-unit, attached | 1,101 | 13.8% |
| 2 to 4 units | 1,211 | 15.1% |
| 5 to 19 units | 570 | 7.1% |
| 20 or more units | 663 | 8.3% |
| Mobile home & other | 0 | 0.0% |
Geography
- ZCTA
- 01721
- Land area
- 12 sq mi
- Water area
- 0.54 sq mi
- Center point
- 42.2578, -71.4735
Counties this ZIP covers
1Compare with nearby ZIP codes
5National ZIP rankings
21- Largest by population
- Most densely populated
- Highest median household income
- Highest median home value
- Most affordable home values
- Highest median gross rent
- Cheapest median gross rent
- Oldest by median age
- Youngest by median age
- Most college-educated
- Highest poverty rate
- Lowest poverty rate
- Highest homeownership rate
- Lowest homeownership rate
- Longest commutes
- Shortest commutes
- Largest households
- Newest housing
- Oldest housing
- Fastest-growing (2019–2023)
- Fastest-shrinking (2019–2023)