Population 3,080 · Census ACS 2020–24
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Population and households in Grantham
Household size in Grantham
| Period | Grantham | Harrisburg area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.09 | 2.41 | 2.51 | 2.68 |
| 2010–14 | 2.10 | 2.43 | 2.53 | 2.73 |
| 2015–19 | 2.10 | 2.42 | 2.50 | 2.71 |
| 2020–24 | 1.50 | 2.44 | 2.46 | 2.65 |
| Change | −0.59 | +0.03 | −0.05 | −0.03 |
Grantham is a place of small households, averaging 1.50 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Since 2006–10, household size has dropped from 2.09, 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 Grantham
| Period | Grantham | Harrisburg area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 23.3 | 39.8 | 40.3 | 37.7 |
| 2010–14 | 23.4 | 40.6 | 41.0 | 38.6 |
| 2015–19 | 23.6 | 40.9 | 41.8 | 39.6 |
| 2020–24 | 24.4 | 40.7 | 42.0 | 40.1 |
| Change | +1.2 | +0.8 | +1.7 | +2.3 |
With a median age of just 24.4, Grantham is far younger than the country as a whole (40.1), a population that tilts toward young adults in their twenties.
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 | Harrisburg area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 10.3% | 10.0% | 10.5% | 12.3% |
| 2010–14 | 14.0% | 10.7% | 10.6% | 12.3% |
| 2015–19 | 8.8% | 10.2% | 10.5% | 11.6% |
| 2020–24 | 7.8% | 10.2% | 10.7% | 11.6% |
| Change | −2.5 pts | +0.2 pts | +0.2 pts | −0.6 pts |
Single parents head only 7.8% of households in Grantham, 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 Grantham
Renters in Grantham
| Period | Grantham | Harrisburg area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 14.8% | 30.3% | 29.0% | 33.3% |
| 2010–14 | 21.6% | 31.6% | 30.5% | 35.6% |
| 2015–19 | 20.8% | 32.4% | 31.1% | 36.0% |
| 2020–24 | 23.5% | 32.0% | 30.7% | 34.8% |
| Change | +8.7 pts | +1.7 pts | +1.7 pts | +1.5 pts |
Only 23.5% of households in Grantham rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Just over eight in ten owners (84.5%) have paid off their mortgages, well 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 | Harrisburg area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.6% | 8.1% | 10.3% | 11.4% |
| 2010–14 | 7.9% | 8.6% | 10.5% | 11.4% |
| 2015–19 | 4.7% | 8.6% | 10.7% | 11.1% |
| 2020–24 | 39.8% | 6.5% | 9.1% | 9.6% |
| Change | +35.3 pts | −1.6 pts | −1.2 pts | −1.8 pts |
Vacant homes make up 39.8% 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 | Harrisburg area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 1975 | 1969 | 1963 | 1974 |
| 2010–14 | 1980 | 1970 | 1964 | 1975 |
| 2015–19 | 1977 | 1971 | 1965 | 1977 |
| 2020–24 | 1982 | 1974 | 1967 | 1980 |
| Change | +7 | +5 | +4 | +6 |
Homes in Grantham are about the same age as the nation's housing: the median home was built in 1982, versus 1980 nationally. Homes here are newer than in the wider Harrisburg area, where the median home dates to 1974.
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 | Harrisburg area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | $777 | $808 | $829 | $965 |
| 2010–14 | $997 | $909 | $923 | $1,040 |
| 2015–19 | $1,110 | $1,045 | $1,039 | $1,213 |
| 2020–24 | $1,798 | $1,304 | $1,323 | $1,571 |
| Change | +$1,021 | +$496 | +$494 | +$606 |
A typical rental in Grantham costs $1,798 a month with utilities, above the national median of $1,571. Rent takes 26.1% of the typical renter's income, comfortably under 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 Grantham
Bachelor's degrees in Grantham
| Period | Grantham | Harrisburg area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 34.7% | 28.6% | 27.2% | 28.4% |
| 2010–14 | 13.8% | 29.4% | 28.7% | 29.6% |
| 2015–19 | 71.8% | 32.7% | 31.8% | 32.1% |
| 2020–24 | 64.3% | 35.9% | 35.6% | 35.6% |
| Change | +29.6 pts | +7.3 pts | +8.3 pts | +7.2 pts |
Grantham is highly educated: nearly two-thirds of adults 25 and older (64.3%) hold at least a bachelor's degree, far above the national share of 35.6%.
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 | Harrisburg area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 99.2% | 89.0% | 87.3% | 84.9% |
| 2010–14 | 99.1% | 89.8% | 88.8% | 86.1% |
| 2015–19 | 98.8% | 90.8% | 90.3% | 87.7% |
| 2020–24 | 99.3% | 91.8% | 91.8% | 89.3% |
| Change | +0.1 pts | +2.8 pts | +4.5 pts | +4.3 pts |
Finishing high school is nearly universal in Grantham: 99.3% 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 Grantham
| Period | Grantham | Harrisburg area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 8.2% | 5.6% | 7.5% | 8.1% |
| 2010–14 | 8.0% | 6.9% | 8.8% | 9.4% |
| 2015–19 | 4.6% | 4.2% | 5.5% | 5.6% |
| 2020–24 | 7.2% | 4.2% | 5.4% | 5.4% |
| Change | −1.0 pts | −1.4 pts | −2.1 pts | −2.7 pts |
Unemployment runs high in Grantham: 7.2% of the labor force was out of work and looking, against 5.4% 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).
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 | 1.50 | 24.4 | 7.8% | 23.5% | 39.8% | 1982 | $1,798 | 64.3% | 99.3% | 7.2% |
| Dillsburg | 2.60 | 43.5 | 9.0% | 17.3% | 5.3% | 1987 | $1,187 | 34.1% | 94.4% | 2.5% |
| Mechanicsburg | 2.47 | 42.6 | 6.1% | 25.7% | 4.4% | 1989 | $1,606 | 51.4% | 96.5% | 2.4% |
| Shiremanstown | 2.31 | 37.6 | 8.4% | 34.3% | 0.8% | 1955 | $1,134 | 35.8% | 97.7% | 9.2% |
| Windsor Park | 1.93 | 27.4 | 9.2% | 67.3% | 1.2% | 2001 | $1,321 | 24.7% | 100.0% | 0.0% |
| Fortney | 2.80 | 35.7 | 3.2% | 0.0% | 0.9% | 1996 | $827 | 30.4% | 88.3% | 3.2% |
| Franklintown | 2.17 | 53.7 | 3.7% | 23.2% | 1.3% | 1992 | $1,250 | 30.2% | 99.7% | 3.8% |
| Lewisberry | 2.56 | 46.2 | 3.5% | 10.5% | 3.3% | 1986 | $1,118 | 34.2% | 94.4% | 1.9% |
| Camp Hill | 2.51 | 42.4 | 5.3% | 23.7% | 6.5% | 1966 | $1,429 | 49.6% | 94.3% | 3.4% |
| Lower Allen | 2.70 | 35.3 | 15.5% | 38.8% | 7.2% | 1960 | $1,306 | 42.2% | 94.2% | 3.2% |
| Boiling Springs | 2.83 | 41.3 | 12.1% | 15.4% | 2.4% | 1986 | $1,277 | 49.7% | 98.4% | 3.3% |
All figures 2020–24.
Cities with similar populations: Swanzey, NH · Shark River Hills, NJ · Sterlington, LA · Stigler, OK · Shadyside, OH · Shady Cove, OR · Shavano Park, TX · St. Bernard, OH · Starr, SC · Taylor, AZ
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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