Population 6,774 · Census ACS 2020–24
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Population and households in ZIP 04021
Household size in ZIP 04021
| Period | ZIP 04021 | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 2.75 | 2.37 | 2.68 |
| 2010–14 | 2.78 | 2.36 | 2.73 |
| 2015–19 | 2.82 | 2.35 | 2.71 |
| 2020–24 | 2.82 | 2.30 | 2.65 |
| Change | +0.07 | −0.07 | −0.03 |
Households in ZIP 04021 average 2.82 people, above the national 2.65, so families with children are more common here. Household size has crept up from 2.75 in 2006–10, even as the national average fell. ZIP 04021 has the largest households of any Maine ZIP code with 5,000+ people.
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 04021
| Period | ZIP 04021 | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 41.4 | 42.1 | 37.7 |
| 2010–14 | 39.1 | 43.5 | 38.6 |
| 2015–19 | 42.2 | 45.0 | 39.6 |
| 2020–24 | 41.9 | 45.0 | 40.1 |
| Change | +0.4 | +2.9 | +2.3 |
The median resident of ZIP 04021 is 41.9 years old, a bit older than the national median of 40.1. Still, the population here is younger than in Maine as a whole, where the median age is 45.0. Since 2006–10, the median age has crept up from 41.4, a smaller shift than nationally.
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 04021
| Period | ZIP 04021 | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 9.3% | 10.1% | 12.3% |
| 2010–14 | 10.7% | 10.1% | 12.3% |
| 2015–19 | 8.0% | 9.4% | 11.6% |
| 2020–24 | 7.2% | 8.8% | 11.6% |
| Change | −2.1 pts | −1.4 pts | −0.6 pts |
Single parents head only 7.2% of households in ZIP 04021, well below the national share of 11.6%. Since 2006–10, the single-parent share has fallen 2.1 points, a much bigger shift than nationally.
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 04021
Renters in ZIP 04021
| Period | ZIP 04021 | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 10.7% | 26.9% | 33.3% |
| 2010–14 | 10.8% | 28.6% | 35.6% |
| 2015–19 | 20.3% | 27.7% | 36.0% |
| 2020–24 | 6.4% | 25.7% | 34.8% |
| Change | −4.4 pts | −1.2 pts | +1.5 pts |
Only 6.4% of households in ZIP 04021 rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 34.1% have no mortgage at all, below the national share of 39.8%. The renter share is down 4.4 points from 2006–10, even as the national share rose. Of the 68 Maine ZIP codes with 5,000+ people, only two have a lower share of renters.
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 04021
| Period | ZIP 04021 | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 11.0% | 17.8% | 11.4% |
| 2010–14 | 8.6% | 18.1% | 11.4% |
| 2015–19 | 10.9% | 19.0% | 11.1% |
| 2020–24 | 7.9% | 16.4% | 9.6% |
| Change | −3.1 pts | −1.4 pts | −1.8 pts |
Vacancy is on the low side in ZIP 04021: 7.9% of homes sit empty, against 9.6% nationally, which points to steady demand for housing. Vacancy is down 3.1 points from 2006–10, mirroring the country.
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 04021
| Period | ZIP 04021 | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 1980 | 1969 | 1974 |
| 2010–14 | 1977 | 1971 | 1975 |
| 2015–19 | 1981 | 1973 | 1977 |
| 2020–24 | 1985 | 1975 | 1980 |
| Change | +5 | +6 | +6 |
The housing in ZIP 04021 is a little younger than the country's: half of it was built after 1985, against 1980 nationally. The median year built has moved up from 1980 in 2006–10, a sign of steady new building. The newest homes are mostly in the west, the oldest in the center.
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 04021
| Period | ZIP 04021 | Maine | U.S. |
|---|---|---|---|
| 2006–10 | $1,173 | $766 | $965 |
| 2010–14 | $942 | $831 | $1,040 |
| 2015–19 | $1,238 | $919 | $1,213 |
| 2020–24 | $2,442 | $1,230 | $1,571 |
| Change | +$1,269 | +$464 | +$606 |
The median renter in ZIP 04021 pays $2,442 a month for rent and utilities, well above the national median of $1,571. Rents are up $1,269 a month from 2006–10, a 108% jump, faster than rents rose nationally. Rent takes 20.8% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent. No other Maine ZIP code with 5,000+ people has higher rents.
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 04021
Bachelor's degrees in ZIP 04021
| Period | ZIP 04021 | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 61.5% | 27.0% | 28.4% |
| 2010–14 | 63.6% | 28.7% | 29.6% |
| 2015–19 | 68.0% | 32.0% | 32.1% |
| 2020–24 | 68.7% | 36.5% | 35.6% |
| Change | +7.2 pts | +9.5 pts | +7.2 pts |
ZIP 04021 is highly educated: about seven in ten adults 25 and older (68.7%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree has risen 7.2 points since 2006–10, mirroring the country. Of the 68 Maine ZIP codes with 5,000+ people, only two have a higher share of college graduates.
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 04021
| Period | ZIP 04021 | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 98.5% | 89.9% | 84.9% |
| 2010–14 | 98.1% | 91.4% | 86.1% |
| 2015–19 | 97.3% | 92.6% | 87.7% |
| 2020–24 | 98.9% | 94.8% | 89.3% |
| Change | +0.3 pts | +4.8 pts | +4.3 pts |
Finishing high school is nearly universal in ZIP 04021: 98.9% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. Of the 68 Maine ZIP codes with 5,000+ people, only two have a higher share of high school graduates.
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 04021
| Period | ZIP 04021 | Maine | U.S. |
|---|---|---|---|
| 2006–10 | 2.5% | 6.6% | 8.1% |
| 2010–14 | 6.6% | 7.6% | 9.4% |
| 2015–19 | 4.6% | 4.2% | 5.6% |
| 2020–24 | 0.3% | 3.9% | 5.4% |
| Change | −2.2 pts | −2.7 pts | −2.7 pts |
The job market in ZIP 04021 has been strong: just 0.3% of the labor force was out of work and looking, well below the national rate of 5.4%. ZIP 04021 has the lowest unemployment rate of any Maine ZIP code with 5,000+ people. Unemployment is down 2.2 points from 2006–10, in line with the national trend.
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 04021 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 04021 | 2.82 | 41.9 | 7.2% | 6.4% | 7.9% | 1985 | $2,442 | 68.7% | 98.9% | 0.3% |
| ZIP 04097 | 2.73 | 47.3 | 6.0% | 13.2% | 4.0% | 1983 | $1,540 | 54.0% | 98.5% | 2.0% |
| ZIP 04096 | 2.49 | 44.3 | 10.7% | 19.6% | 4.3% | 1972 | $1,748 | 68.1% | 98.7% | 3.2% |
| ZIP 04105 | 2.58 | 47.6 | 6.1% | 15.6% | 6.8% | 1986 | $2,431 | 72.9% | 98.1% | 2.5% |
| ZIP 04110 | 2.52 | 54.1 | 6.4% | 21.8% | 22.2% | 1977 | $1,971 | 76.2% | 98.9% | 0.2% |
| ZIP 04039 | 2.34 | 45.5 | 8.0% | 18.4% | 13.4% | 1984 | $1,343 | 45.7% | 96.1% | 2.8% |
| ZIP 04062 | 2.36 | 43.1 | 10.2% | 15.4% | 10.0% | 1985 | $1,603 | 45.2% | 98.0% | 1.6% |
| ZIP 04069 | 2.40 | 47.2 | 14.7% | 10.6% | 4.5% | 1971 | $981 | 49.0% | 98.3% | 0.7% |
| ZIP 04017 | 2.52 | 54.1 | 6.4% | 21.8% | 22.2% | 1977 | $1,971 | 76.2% | 98.9% | 0.2% |
| ZIP 04032 | 2.37 | 49.3 | 6.3% | 22.4% | 12.2% | 1982 | $1,477 | 60.1% | 94.5% | 4.2% |
| ZIP 04260 | 2.68 | 41.3 | 8.8% | 17.1% | 10.1% | 1989 | $1,279 | 29.4% | 95.7% | 4.4% |
All figures 2020–24.
Zip codes with similar populations: 01566, MA · 31714, GA · 28762, NC · 28428, NC · 33042, FL · 33920, FL · 27313, NC · 26426, WV · 34753, FL · 36580, AL
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 04021. 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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