Population 2,644 · Census ACS 2020–24
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Population and households in ZIP 01521
Household size in ZIP 01521
| Period | ZIP 01521 | Springfield area | Massachusetts | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.49 | 2.56 | 2.53 | 2.68 |
| 2010–14 | 2.37 | 2.57 | 2.57 | 2.73 |
| 2015–19 | 2.63 | 2.56 | 2.57 | 2.71 |
| 2020–24 | 2.18 | 2.51 | 2.52 | 2.65 |
| Change | −0.31 | −0.05 | −0.01 | −0.03 |
Households in ZIP 01521 are small: just 2.18 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Since 2006–10, household size has dropped from 2.49, but in a place this small, much of that may be survey noise rather than real change.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in ZIP 01521
| Period | ZIP 01521 | Springfield area | Massachusetts | U.S. |
|---|---|---|---|---|
| 2006–10 | 42.4 | 38.8 | 39.4 | 37.7 |
| 2010–14 | 43.8 | 39.4 | 40.1 | 38.6 |
| 2015–19 | 45.6 | 40.3 | 41.0 | 39.6 |
| 2020–24 | 50.4 | 40.7 | 41.4 | 40.1 |
| Change | +8.0 | +1.9 | +2.0 | +2.3 |
ZIP 01521 skews older: half of its residents are older than 50.4, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in ZIP 01521
| Period | ZIP 01521 | Springfield area | Massachusetts | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.4% | 15.4% | 11.0% | 12.3% |
| 2010–14 | 6.0% | 16.7% | 11.0% | 12.3% |
| 2015–19 | 13.3% | 15.8% | 10.3% | 11.6% |
| 2020–24 | 4.5% | 15.3% | 10.6% | 11.6% |
| Change | −3.9 pts | −0.2 pts | −0.4 pts | −0.6 pts |
Single parents head only 4.5% of households in ZIP 01521, well below the national share of 11.6%.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in ZIP 01521
Renters in ZIP 01521
| Period | ZIP 01521 | Springfield area | Massachusetts | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.6% | 37.0% | 36.0% | 33.3% |
| 2010–14 | 15.2% | 38.5% | 37.7% | 35.6% |
| 2015–19 | 12.6% | 38.9% | 37.6% | 36.0% |
| 2020–24 | 5.2% | 37.8% | 37.5% | 34.8% |
| Change | −5.4 pts | +0.8 pts | +1.5 pts | +1.5 pts |
Only 5.2% of households in ZIP 01521 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 31.7% have no mortgage at all, below the national share of 39.8%.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in ZIP 01521
| Period | ZIP 01521 | Springfield area | Massachusetts | U.S. |
|---|---|---|---|---|
| 2006–10 | 22.6% | 8.4% | 9.5% | 11.4% |
| 2010–14 | 25.0% | 8.3% | 9.1% | 11.4% |
| 2015–19 | 21.6% | 8.2% | 8.9% | 11.1% |
| 2020–24 | 20.2% | 7.7% | 7.9% | 9.6% |
| Change | −2.4 pts | −0.8 pts | −1.6 pts | −1.8 pts |
Vacancy is high in ZIP 01521: 20.2% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in ZIP 01521
| Period | ZIP 01521 | Springfield area | Massachusetts | U.S. |
|---|---|---|---|---|
| 2006–10 | 1971 | 1956 | 1958 | 1974 |
| 2010–14 | 1968 | 1956 | 1959 | 1975 |
| 2015–19 | 1972 | 1957 | 1961 | 1977 |
| 2020–24 | 1974 | 1958 | 1963 | 1980 |
| Change | +3 | +2 | +5 | +6 |
Housing in ZIP 01521 leans a little older: the median home dates to 1974, against 1980 nationally. Still, homes here are newer than in the Springfield area overall, where the median home dates to 1958.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in ZIP 01521
| Period | ZIP 01521 | Springfield area | Massachusetts | U.S. |
|---|---|---|---|---|
| 2006–10 | $857 | $809 | $1,085 | $965 |
| 2010–14 | $945 | $871 | $1,157 | $1,040 |
| 2015–19 | $1,263 | $995 | $1,398 | $1,213 |
| 2020–24 | $1,500 | $1,261 | $1,860 | $1,571 |
| Change | +$643 | +$452 | +$775 | +$606 |
Rent in ZIP 01521 runs $1,500 a month at the median, utilities included, close to the U.S. median of $1,571. Rents here are higher than in the Springfield area as a whole ($1,261). Rent takes 32.6% of the typical renter's income, just over the 30% mark often used to define affordable rent.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in ZIP 01521
Bachelor's degrees in ZIP 01521
| Period | ZIP 01521 | Springfield area | Massachusetts | U.S. |
|---|---|---|---|---|
| 2006–10 | 24.1% | 23.3% | 38.5% | 28.4% |
| 2010–14 | 31.2% | 24.8% | 40.1% | 29.6% |
| 2015–19 | 28.0% | 26.7% | 43.6% | 32.1% |
| 2020–24 | 35.5% | 29.0% | 47.2% | 35.6% |
| Change | +11.4 pts | +5.8 pts | +8.7 pts | +7.2 pts |
Just over a third of adults 25 and older in ZIP 01521 (35.5%) hold at least a bachelor's degree, close to the national share of 35.6%. The share is higher than in the Springfield area as a whole (29.0%).
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in ZIP 01521
| Period | ZIP 01521 | Springfield area | Massachusetts | U.S. |
|---|---|---|---|---|
| 2006–10 | 91.7% | 82.4% | 88.4% | 84.9% |
| 2010–14 | 91.3% | 83.3% | 89.3% | 86.1% |
| 2015–19 | 94.7% | 85.2% | 90.5% | 87.7% |
| 2020–24 | 95.3% | 86.7% | 91.0% | 89.3% |
| Change | +3.6 pts | +4.3 pts | +2.6 pts | +4.3 pts |
High school completion is high in ZIP 01521: 95.3% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in ZIP 01521
| Period | ZIP 01521 | Springfield area | Massachusetts | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.2% | 10.2% | 7.5% | 8.1% |
| 2010–14 | 8.2% | 11.8% | 8.7% | 9.4% |
| 2015–19 | 8.3% | 6.2% | 5.0% | 5.6% |
| 2020–24 | 3.8% | 6.3% | 5.2% | 5.4% |
| Change | −3.3 pts | −3.9 pts | −2.3 pts | −2.7 pts |
Unemployment in ZIP 01521 runs below the national rate: 3.8% of the labor force was out of work and looking, against 5.4% nationally. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
ZIP 01521 compared with nearby ZIP codes
| ZIP code | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| ZIP 01521 | 2.18 | 50.4 | 4.5% | 5.2% | 20.2% | 1974 | $1,500 | 35.5% | 95.3% | 3.8% |
| ZIP 01081 | 2.50 | 42.3 | 6.2% | 10.6% | 15.3% | 1983 | $1,104 | 22.4% | 90.7% | 5.5% |
| ZIP 01518 | 2.42 | 46.5 | 11.8% | 22.2% | 7.6% | 1987 | $913 | 50.1% | 96.4% | 5.3% |
| ZIP 01566 | 2.51 | 48.9 | 3.8% | 9.6% | 7.8% | 1978 | $1,528 | 49.0% | 94.4% | 2.6% |
| ZIP 01010 | 2.65 | 43.1 | 9.2% | 12.8% | 13.3% | 1988 | $789 | 44.6% | 98.0% | 2.3% |
| ZIP 01550 | 2.50 | 38.9 | 19.9% | 57.3% | 6.4% | 1956 | $1,201 | 18.8% | 81.6% | 7.4% |
| ZIP 01057 | 2.51 | 45.3 | 7.7% | 17.6% | 8.4% | 1968 | $1,015 | 29.4% | 93.4% | 6.1% |
| ZIP 06282 | 2.16 | 60.3 | 3.9% | 11.2% | 3.7% | 1987 | $1,791 | 46.1% | 96.7% | 7.6% |
| ZIP 06076 | 2.46 | 45.0 | 9.0% | 19.5% | 9.6% | 1968 | $1,141 | 27.8% | 94.0% | 5.8% |
| ZIP 01506 | 2.35 | 51.8 | 4.7% | 12.9% | 7.0% | 1972 | $1,065 | 28.4% | 93.7% | 7.5% |
| ZIP 06281 | 2.41 | 47.3 | 9.8% | 18.6% | 8.2% | 1983 | $1,209 | 48.5% | 97.9% | 3.5% |
All figures 2020–24.
Zip codes with similar populations: 06384, CT · 17981, PA · 31716, GA · 97341, OR · 03285, NH · 16421, PA · 38641, MS · 31079, GA · 53178, WI · 54666, WI
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up ZIP 01521. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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