Population 3,108 · Census ACS 2020–24
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Population and households in Grantham
Household size in Grantham
| Period | Grantham | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 2.57 | 2.52 | 2.68 |
| 2010–14 | 2.72 | 2.50 | 2.73 |
| 2015–19 | 2.36 | 2.49 | 2.71 |
| 2020–24 | 2.43 | 2.51 | 2.65 |
| Change | −0.14 | −0.01 | −0.03 |
The average household in Grantham has 2.43 people, under the U.S. average of 2.65. That is in line with the rest of New Hampshire. Since 2006–10, household size has dropped from 2.57, but in a place this small, survey estimates can swing a lot from one release to the next.
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 Grantham
| Period | Grantham | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 47.4 | 40.6 | 37.7 |
| 2010–14 | 48.6 | 42.1 | 38.6 |
| 2015–19 | 49.9 | 43.3 | 39.6 |
| 2020–24 | 49.3 | 44.2 | 40.1 |
| Change | +1.8 | +3.5 | +2.3 |
With a median age of 49.3, Grantham is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees.
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 Grantham
| Period | Grantham | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 3.0% | 9.4% | 12.3% |
| 2010–14 | 7.8% | 9.5% | 12.3% |
| 2015–19 | 9.9% | 8.9% | 11.6% |
| 2020–24 | 9.6% | 8.5% | 11.6% |
| Change | +6.6 pts | −0.9 pts | −0.6 pts |
Single parents head about one in ten households in Grantham (9.6%), below the national share of 11.6%. Even so, single parents are more common here than in New Hampshire overall (8.5%).
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 Grantham
Renters in Grantham
| Period | Grantham | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 9.2% | 27.4% | 33.3% |
| 2010–14 | 8.8% | 29.0% | 35.6% |
| 2015–19 | 11.2% | 28.9% | 36.0% |
| 2020–24 | 0.9% | 27.2% | 34.8% |
| Change | −8.3 pts | −0.1 pts | +1.5 pts |
Grantham is overwhelmingly a place of homeowners: only 0.9% of households rent, far below the national share of 34.8%. Owner-heavy areas like this tend to see less turnover. Among homeowners, 46.1% have no mortgage at all, above 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 Grantham
| Period | Grantham | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 37.1% | 12.6% | 11.4% |
| 2010–14 | 33.5% | 12.5% | 11.4% |
| 2015–19 | 30.7% | 12.7% | 11.1% |
| 2020–24 | 32.5% | 11.7% | 9.6% |
| Change | −4.5 pts | −0.9 pts | −1.8 pts |
Vacant homes make up 32.5% of the housing in Grantham, 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 Grantham
| Period | Grantham | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 1983 | 1971 | 1974 |
| 2010–14 | 1988 | 1972 | 1975 |
| 2015–19 | 1987 | 1973 | 1977 |
| 2020–24 | 1990 | 1976 | 1980 |
| Change | +7 | +5 | +6 |
Grantham has newer housing than the country as a whole: the median home was built in 1990, versus 1980 nationally.
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 Grantham
| Period | Grantham | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | $1,443 | $1,018 | $965 |
| 2010–14 | $1,391 | $1,094 | $1,040 |
| 2015–19 | $1,217 | $1,224 | $1,213 |
| 2020–24 | $1,057 | $1,597 | $1,571 |
| Change | −$385 | +$580 | +$606 |
Rent in Grantham runs $1,057 a month at the median, utilities included, well below the U.S. median of $1,571. The typical renter here spends 20.2% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally.
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 Grantham
Bachelor's degrees in Grantham
| Period | Grantham | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 55.2% | 33.5% | 28.4% |
| 2010–14 | 54.1% | 35.0% | 29.6% |
| 2015–19 | 61.2% | 37.6% | 32.1% |
| 2020–24 | 56.6% | 41.1% | 35.6% |
| Change | +1.3 pts | +7.6 pts | +7.2 pts |
College graduates are unusually common in Grantham: 56.6% of adults 25 and older have a bachelor's degree or higher, against 35.6% nationally. Education tends to track local incomes and the kinds of jobs nearby.
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 Grantham
| Period | Grantham | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 95.3% | 91.0% | 84.9% |
| 2010–14 | 96.1% | 92.0% | 86.1% |
| 2015–19 | 98.9% | 93.1% | 87.7% |
| 2020–24 | 97.9% | 94.5% | 89.3% |
| Change | +2.5 pts | +3.5 pts | +4.3 pts |
Finishing high school is nearly universal in Grantham: 97.9% 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 Grantham
| Period | Grantham | New Hampshire | U.S. |
|---|---|---|---|
| 2006–10 | 3.9% | 5.9% | 8.1% |
| 2010–14 | 3.4% | 6.6% | 9.4% |
| 2015–19 | 0.2% | 3.6% | 5.6% |
| 2020–24 | 3.8% | 3.4% | 5.4% |
| Change | −0.2 pts | −2.5 pts | −2.7 pts |
Jobs have been easier to find in Grantham than nationally: unemployment was 3.8%, against 5.4%. The picture is much the same across New Hampshire. 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).
Grantham compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Grantham | 2.43 | 49.3 | 9.6% | 0.9% | 32.5% | 1990 | $1,057 | 56.6% | 97.9% | 3.8% |
| West Springfield | 2.98 | 51.4 | 6.4% | 9.3% | 40.3% | 1985 | $1,096 | 36.4% | 97.4% | 1.0% |
| Springfield | 2.98 | 51.4 | 6.4% | 9.3% | 40.3% | 1985 | $1,096 | 36.4% | 97.4% | 1.0% |
| Enfield Center | 2.07 | 59.9 | 8.6% | 1.1% | 22.0% | 1983 | $1,172 | 38.8% | 98.6% | 0.9% |
| Mascoma | 2.23 | 49.7 | 9.0% | 12.8% | 15.3% | 1985 | $1,317 | 50.1% | 99.8% | 0.0% |
| Georges Mills | 2.36 | 62.0 | 7.3% | 17.6% | 44.9% | 1982 | $1,614 | 52.5% | 97.7% | 0.2% |
| Croydon Flat | 2.83 | 38.3 | 9.3% | 11.3% | 31.6% | 1979 | $991 | 27.2% | 94.7% | 3.1% |
| Enfield | 2.07 | 56.7 | 5.0% | 17.6% | 24.8% | 1984 | $1,155 | 43.6% | 95.4% | 0.5% |
| Meriden | 2.71 | 40.6 | 4.6% | 10.6% | 15.4% | 1981 | $1,971 | 48.4% | 97.3% | 0.4% |
| Cornish Flat | 2.44 | 51.6 | 4.7% | 7.1% | 10.6% | 1980 | $1,275 | 40.5% | 97.8% | 4.2% |
| Robinson Corner | 2.61 | 51.8 | 5.4% | 10.2% | 27.1% | 1985 | $1,116 | 36.8% | 96.6% | 3.2% |
All figures 2020–24.
Cities with similar populations: Floydada, TX · Andale, KS · Sturgis, KY · North Lawrence, OH · Nathalie, VA · Milton, NH · Lyford, TX · Lennox, SD · Lennon, MI · Janesville, CA
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 Grantham. 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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