Population 5,181 · Census ACS 2020–24
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Population and households in ZIP 03603
Household size in ZIP 03603
| Period | ZIP 03603 | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 2.22 | 2.52 | 2.68 |
| 2010–14 | 2.31 | 2.50 | 2.73 |
| 2015–19 | 2.44 | 2.49 | 2.71 |
| 2020–24 | 3.11 | 2.51 | 2.65 |
| Change | +0.89 | −0.01 | −0.03 |
ZIP 03603 is a place of big households: 3.11 people per home on average, compared with 2.65 nationally. Numbers like that usually point to plenty of families with kids. Since 2006–10, household size has climbed from 2.22, even as the national average fell. Of the 79 New Hampshire ZIP codes with 5,000+ people, only two have larger households.
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 03603
| Period | ZIP 03603 | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 44.5 | 40.6 | 37.7 |
| 2010–14 | 46.9 | 42.1 | 38.6 |
| 2015–19 | 49.3 | 43.3 | 39.6 |
| 2020–24 | 43.2 | 44.2 | 40.1 |
| Change | −1.3 | +3.5 | +2.3 |
The median resident of ZIP 03603 is 43.2 years old, older than the national median of 40.1. The median age has dropped from 44.5 in 2006–10, even as the national median rose. The youngest areas are in the center, the oldest in the north.
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 03603
| Period | ZIP 03603 | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 12.6% | 9.4% | 12.3% |
| 2010–14 | 8.0% | 9.5% | 12.3% |
| 2015–19 | 13.3% | 8.9% | 11.6% |
| 2020–24 | 7.8% | 8.5% | 11.6% |
| Change | −4.8 pts | −0.9 pts | −0.6 pts |
Single-parent households are relatively rare in ZIP 03603: 7.8% of households, against 11.6% nationally. The picture is much the same across New Hampshire. The single-parent share is down 4.8 points from 2006–10, 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 03603
Renters in ZIP 03603
| Period | ZIP 03603 | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 22.4% | 27.4% | 33.3% |
| 2010–14 | 20.4% | 29.0% | 35.6% |
| 2015–19 | 23.1% | 28.9% | 36.0% |
| 2020–24 | 20.5% | 27.2% | 34.8% |
| Change | −1.9 pts | −0.1 pts | +1.5 pts |
ZIP 03603 is largely a place of homeowners: only 20.5% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 59.5% have no mortgage at all, well above the national share of 39.8%. The renter share is down 1.9 points from 2006–10, even as the national share rose.
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 03603
| Period | ZIP 03603 | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 4.6% | 12.6% | 11.4% |
| 2010–14 | 12.5% | 12.5% | 11.4% |
| 2015–19 | 12.8% | 12.7% | 11.1% |
| 2020–24 | 18.9% | 11.7% | 9.6% |
| Change | +14.2 pts | −0.9 pts | −1.8 pts |
Vacant homes make up 18.9% of the housing in ZIP 03603, 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. Vacancy is up 14.2 points from 2006–10, even as the national rate fell.
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 03603
| Period | ZIP 03603 | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 1977 | 1971 | 1974 |
| 2010–14 | 1969 | 1972 | 1975 |
| 2015–19 | 1971 | 1973 | 1977 |
| 2020–24 | 1976 | 1976 | 1980 |
| Change | −0 | +5 | +6 |
Homes in ZIP 03603 are about the same age as the nation's housing: the median home was built in 1976, versus 1980 nationally. The newest homes are mostly in the southeast, the oldest in the west.
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 03603
| Period | ZIP 03603 | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | $696 | $1,018 | $965 |
| 2010–14 | $706 | $1,094 | $1,040 |
| 2015–19 | $994 | $1,224 | $1,213 |
| 2020–24 | $1,047 | $1,597 | $1,571 |
| Change | +$351 | +$580 | +$606 |
The median renter in ZIP 03603 pays $1,047 a month for rent and utilities, well below the national median of $1,571. Rents are up $351 a month from 2006–10, a 50% rise, a slower climb than the nation's. The typical renter here spends 35.0% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched. Renters on a budget will find the lowest rents in the center; the highest are in the northeast.
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 03603
Bachelor's degrees in ZIP 03603
| Period | ZIP 03603 | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 14.4% | 33.5% | 28.4% |
| 2010–14 | 13.6% | 35.0% | 29.6% |
| 2015–19 | 16.0% | 37.6% | 32.1% |
| 2020–24 | 12.8% | 41.1% | 35.6% |
| Change | −1.5 pts | +7.6 pts | +7.2 pts |
College degrees are relatively uncommon in ZIP 03603: 12.8% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%. The share with a degree has fallen 1.5 points since 2006–10, even as the national share rose. No other New Hampshire ZIP code with 5,000+ people has a lower 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 03603
| Period | ZIP 03603 | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 88.2% | 91.0% | 84.9% |
| 2010–14 | 87.3% | 92.0% | 86.1% |
| 2015–19 | 90.6% | 93.1% | 87.7% |
| 2020–24 | 96.5% | 94.5% | 89.3% |
| Change | +8.3 pts | +3.5 pts | +4.3 pts |
High school completion is high in ZIP 03603: 96.5% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 8.3 points from 2006–10, as it has nationally.
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 03603
| Period | ZIP 03603 | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 2.0% | 5.9% | 8.1% |
| 2010–14 | 7.8% | 6.6% | 9.4% |
| 2015–19 | 5.4% | 3.6% | 5.6% |
| 2020–24 | 4.7% | 3.4% | 5.4% |
| Change | +2.7 pts | −2.5 pts | −2.7 pts |
At 4.7%, unemployment in ZIP 03603 is close to the national rate of 5.4%. The rate is higher than in New Hampshire as a whole (3.4%). Unemployment has risen 2.7 points since 2006–10, even as the national rate fell.
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 03603 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 03603 | 3.11 | 43.2 | 7.8% | 20.5% | 18.9% | 1976 | $1,047 | 12.8% | 96.5% | 4.7% |
| ZIP 05156 | 2.34 | 43.4 | 7.9% | 32.1% | 12.2% | 1961 | $935 | 24.6% | 90.8% | 9.1% |
| ZIP 03601 | 3.03 | 47.3 | 4.3% | 7.5% | 41.6% | 1963 | $1,352 | 25.4% | 93.7% | 6.0% |
| ZIP 03607 | 3.02 | 47.4 | 4.3% | 7.7% | 41.5% | 1963 | $1,349 | 25.3% | 93.8% | 5.9% |
| ZIP 03609 | 2.27 | 40.7 | 18.1% | 24.7% | 13.4% | 1957 | $1,074 | 30.3% | 99.8% | 1.9% |
| ZIP 05101 | 2.16 | 49.9 | 10.0% | 39.3% | 17.1% | 1946 | $1,111 | 33.9% | 97.0% | 8.1% |
| ZIP 03743 | 2.60 | 45.1 | 11.7% | 41.4% | 11.3% | 1958 | $1,229 | 20.8% | 87.5% | 4.9% |
| ZIP 05150 | 2.21 | 45.5 | 9.8% | 15.0% | 4.3% | 1982 | $926 | 23.1% | 96.4% | 0.0% |
| ZIP 03602 | 2.33 | 50.5 | 4.0% | 19.5% | 22.3% | 1976 | $1,092 | 28.5% | 94.6% | 3.3% |
| ZIP 03604 | 2.39 | 41.2 | 8.3% | 46.3% | 15.7% | 1957 | $1,148 | 27.6% | 91.5% | 0.3% |
| ZIP 05154 | 2.04 | 52.5 | 3.2% | 33.3% | 17.3% | 1938 | $1,155 | 48.8% | 97.2% | 2.1% |
All figures 2020–24.
Zip codes with similar populations: 32058, FL · 72106, AR · 67871, KS · 18414, PA · 21111, MD · 21638, MD · 21758, MD · 22473, VA · 25506, WV · 56085, MN
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 03603. 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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