03431, NH Demographics

Population 23,861 · Census ACS 2020–24

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03431, NH map of median age by neighborhood
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Population and households in ZIP 03431

Household size in ZIP 03431

Household size, people per household
PeriodZIP 03431New HampshireU.S.
2006–102.342.522.68
2010–142.202.502.73
2015–192.202.492.71
2020–242.242.512.65
Change−0.10−0.01−0.03
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Households in ZIP 03431 are small: just 2.24 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. Household size has dropped from 2.34 in 2006–10, a much bigger shift than nationally.

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 03431

Median age, years
PeriodZIP 03431New HampshireU.S.
2006–1038.640.637.7
2010–1440.242.138.6
2015–1942.143.339.6
2020–2442.044.240.1
Change+3.4+3.5+2.3
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The median resident of ZIP 03431 is 42.0 years old, a bit older than the national median of 40.1. Still, the population here is younger than in New Hampshire as a whole, where the median age is 44.2. The median age has climbed from 38.6 in 2006–10, mirroring the country.

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 03431

Single-parent households, % of households
PeriodZIP 03431New HampshireU.S.
2006–1010.0%9.4%12.3%
2010–149.0%9.5%12.3%
2015–1910.2%8.9%11.6%
2020–248.9%8.5%11.6%
Change−1.1 pts−0.9 pts−0.6 pts
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Single parents head about one in twelve households in ZIP 03431 (8.9%), below the national share of 11.6%. That is in line with the rest of New Hampshire. The single-parent share has edged down 1.1 points since 2006–10, as it has 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 03431

Renters in ZIP 03431

Renters, % of occupied homes
PeriodZIP 03431New HampshireU.S.
2006–1040.0%27.4%33.3%
2010–1441.9%29.0%35.6%
2015–1945.2%28.9%36.0%
2020–2443.1%27.2%34.8%
Change+3.1 pts−0.1 pts+1.5 pts
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More than four in ten households in ZIP 03431 rent their homes (43.1%), above the national share of 34.8%. Among owners, 43.6% have paid off their mortgages, above the national share of 39.8%. Rentals cluster in the east; owners are most common in the northwest. Since 2006–10, the renter share has risen 3.1 points, as it has nationally.

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 03431

Vacant homes, % of all homes
PeriodZIP 03431New HampshireU.S.
2006–109.2%12.6%11.4%
2010–149.2%12.5%11.4%
2015–199.7%12.7%11.1%
2020–2411.3%11.7%9.6%
Change+2.1 pts−0.9 pts−1.8 pts
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A few more homes sit empty in ZIP 03431 than nationally: 11.3%, against 9.6%. The count includes vacation homes and homes between owners or tenants, not just abandoned ones. Vacancy is up 2.1 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 03431

Age of homes, median year built
PeriodZIP 03431New HampshireU.S.
2006–10195619711974
2010–14195619721975
2015–19196019731977
2020–24196019761980
Change+4+5+6
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ZIP 03431 is a place of older homes: half were built before 1960, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. Newer construction is concentrated in the northwest, while the east has the oldest housing. Only seven of the 79 New Hampshire ZIP codes with 5,000+ people have older homes.

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 03431

Rent, per month
PeriodZIP 03431New HampshireU.S.
2006–10$1,019$1,018$965
2010–14$990$1,094$1,040
2015–19$992$1,224$1,213
2020–24$1,530$1,597$1,571
Change+$511+$580+$606
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Rent in ZIP 03431 runs $1,530 a month at the median, utilities included, close to the U.S. median of $1,571. Rent has climbed $511 a month since 2006–10, up 50%, a slower climb than the nation's. Rent takes 32.2% of the typical renter's income, just over the 30% mark often used to define affordable rent. Renters on a budget will find the lowest rents in the east; the highest are in the northwest.

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 03431

Bachelor's degrees in ZIP 03431

Bachelor's degrees, % of adults 25+
PeriodZIP 03431New HampshireU.S.
2006–1035.5%33.5%28.4%
2010–1438.0%35.0%29.6%
2015–1940.6%37.6%32.1%
2020–2442.0%41.1%35.6%
Change+6.5 pts+7.6 pts+7.2 pts
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College degrees are a bit more common in ZIP 03431 than nationally: 42.0% of adults 25 and older have a bachelor's or higher, against 35.6%. Since 2006–10, the share with a degree has risen 6.5 points, as it has nationally. College graduates are most concentrated in the west and least in the east.

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 03431

High school graduates, % of adults 25+
PeriodZIP 03431New HampshireU.S.
2006–1090.1%91.0%84.9%
2010–1492.2%92.0%86.1%
2015–1992.8%93.1%87.7%
2020–2494.1%94.5%89.3%
Change+3.9 pts+3.5 pts+4.3 pts
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High school completion in ZIP 03431 is above the national rate: 94.1% of adults have a diploma, against 89.3%. The picture is much the same across New Hampshire. The share with a diploma has risen 3.9 points since 2006–10, mirroring the country.

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 03431

Unemployment, % of the labor force
PeriodZIP 03431New HampshireU.S.
2006–108.2%5.9%8.1%
2010–149.2%6.6%9.4%
2015–194.2%3.6%5.6%
2020–241.8%3.4%5.4%
Change−6.3 pts−2.5 pts−2.7 pts
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Unemployment in ZIP 03431 has been low: just 1.8% of the labor force was out of work and looking, well below the national rate of 5.4%. Since 2006–10, unemployment has fallen 6.3 points, as it has nationally. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's 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 03431 compared with nearby ZIP codes

ZIP codeHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
ZIP 034312.2442.08.9%43.1%11.3%1960$1,53042.0%94.1%1.8%
ZIP 034352.1420.066.7%100.0%30.0%1981$1,40756.2%100.0%5.2%
ZIP 034462.3950.18.9%27.0%4.7%1973$1,57032.3%93.2%2.8%
ZIP 034552.2645.89.5%31.5%8.6%1963$1,19540.1%94.5%0.4%
ZIP 034452.5943.95.9%7.4%19.3%1976$1,26341.4%92.0%2.6%
ZIP 034622.4148.812.7%23.9%28.8%1979$1,33047.3%94.9%4.0%
ZIP 034482.7244.84.7%7.7%9.6%1975$1,74227.0%95.3%4.4%
ZIP 034672.3555.34.5%10.7%3.9%1975$1,35447.2%96.4%2.7%
ZIP 034572.5944.86.2%7.4%23.4%1976$1,22740.7%92.5%2.7%
ZIP 034432.4846.611.5%13.6%14.7%1981$1,33044.9%95.9%5.2%
ZIP 034652.6739.76.7%22.7%10.8%1967$1,13926.8%93.8%4.5%

All figures 2020–24.

Zip codes with similar populations: 88030, NM · 45133, OH · 33870, FL · 77026, TX · 46375, IN · 46321, IN · 48134, MI · 35020, AL · 34110, FL · 55038, 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 03431. 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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