Population 413 · Census ACS 2020–24
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Median age by neighborhoodHistory and comparison ↓︎
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Population and households in South Mountain
Household size in South Mountain
| Period | South Mountain | Pennsylvania | U.S. |
|---|---|---|---|
| 2006–10 | 2.68 | 2.51 | 2.68 |
| 2010–14 | 2.47 | 2.53 | 2.73 |
| 2015–19 | 2.77 | 2.50 | 2.71 |
| 2020–24 | 2.26 | 2.46 | 2.65 |
| Change | −0.43 | −0.05 | −0.03 |
Households in South Mountain are small: just 2.26 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. Since 2006–10, household size has dropped from 2.68, 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 South Mountain
| Period | South Mountain | Pennsylvania | U.S. |
|---|---|---|---|
| 2006–10 | 29.8 | 40.3 | 37.7 |
| 2010–14 | 40.9 | 41.0 | 38.6 |
| 2015–19 | 51.9 | 41.8 | 39.6 |
| 2020–24 | 52.1 | 42.0 | 40.1 |
| Change | +22.3 | +1.7 | +2.3 |
With a median age of 52.1, South Mountain 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 South Mountain
| Period | South Mountain | Pennsylvania | U.S. |
|---|---|---|---|
| 2006–10 | 19.4% | 10.5% | 12.3% |
| 2010–14 | 10.8% | 10.6% | 12.3% |
| 2015–19 | 6.3% | 10.5% | 11.6% |
| 2020–24 | 4.8% | 10.7% | 11.6% |
| Change | −14.6 pts | +0.2 pts | −0.6 pts |
Single-parent households are relatively rare in South Mountain: 4.8% of households, against 11.6% 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 South Mountain
Renters in South Mountain
| Period | South Mountain | Pennsylvania | U.S. |
|---|---|---|---|
| 2006–10 | 24.4% | 29.0% | 33.3% |
| 2010–14 | 8.0% | 30.5% | 35.6% |
| 2015–19 | 14.9% | 31.1% | 36.0% |
| 2020–24 | 35.9% | 30.7% | 34.8% |
| Change | +11.5 pts | +1.7 pts | +1.5 pts |
More than a third of households in South Mountain rent their homes (35.9%), close to the national share of 34.8%. Renters make up a bigger share here than in Pennsylvania as a whole (30.7%). Nearly six in ten owners (55.9%) 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 South Mountain
| Period | South Mountain | Pennsylvania | U.S. |
|---|---|---|---|
| 2006–10 | 4.5% | 10.3% | 11.4% |
| 2010–14 | 11.2% | 10.5% | 11.4% |
| 2015–19 | 15.0% | 10.7% | 11.1% |
| 2020–24 | 4.8% | 9.1% | 9.6% |
| Change | +0.2 pts | −1.2 pts | −1.8 pts |
Only 4.8% of homes in South Mountain are vacant, far below the national rate of 9.6%, which usually means strong demand for housing.
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 South Mountain
| Period | South Mountain | Pennsylvania | U.S. |
|---|---|---|---|
| 2006–10 | 1975 | 1963 | 1974 |
| 2010–14 | 1972 | 1964 | 1975 |
| 2015–19 | 1970 | 1965 | 1977 |
| 2020–24 | 1975 | 1967 | 1980 |
| Change | +1 | +4 | +6 |
Housing in South Mountain leans a little older: the median home dates to 1975, against 1980 nationally. Even so, homes here are newer than in Pennsylvania as a whole, where the median home dates to 1967.
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 South Mountain
| Period | South Mountain | Pennsylvania | U.S. |
|---|---|---|---|
| 2006–10 | $827 | $829 | $965 |
| 2010–14 | $855 | $923 | $1,040 |
| 2015–19 | $1,099 | $1,039 | $1,213 |
| 2020–24 | $836 | $1,323 | $1,571 |
| Change | +$10 | +$494 | +$606 |
Rent in South Mountain runs $836 a month at the median, utilities included, well below the U.S. median of $1,571. Rent takes 26.3% 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 South Mountain
Bachelor's degrees in South Mountain
| Period | South Mountain | Pennsylvania | U.S. |
|---|---|---|---|
| 2006–10 | 5.3% | 27.2% | 28.4% |
| 2010–14 | 7.5% | 28.7% | 29.6% |
| 2015–19 | 14.4% | 31.8% | 32.1% |
| 2020–24 | 9.6% | 35.6% | 35.6% |
| Change | +4.3 pts | +8.3 pts | +7.2 pts |
Fewer adults in South Mountain have a four-year degree than in the country as a whole: 9.6%, against 35.6% nationally.
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 South Mountain
| Period | South Mountain | Pennsylvania | U.S. |
|---|---|---|---|
| 2006–10 | 86.9% | 87.3% | 84.9% |
| 2010–14 | 75.9% | 88.8% | 86.1% |
| 2015–19 | 81.0% | 90.3% | 87.7% |
| 2020–24 | 86.2% | 91.8% | 89.3% |
| Change | −0.6 pts | +4.5 pts | +4.3 pts |
About one in seven adults in South Mountain never finished high school, a bit more than nationally: 86.2% have a diploma or equivalent, against 89.3% across the U.S.
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 South Mountain
| Period | South Mountain | Pennsylvania | U.S. |
|---|---|---|---|
| 2006–10 | 5.6% | 7.5% | 8.1% |
| 2010–14 | 7.0% | 8.8% | 9.4% |
| 2015–19 | 20.6% | 5.5% | 5.6% |
| 2020–24 | 0.4% | 5.4% | 5.4% |
| Change | −5.2 pts | −2.1 pts | −2.7 pts |
Unemployment in South Mountain has been low: just 0.4% of the labor force was out of work and looking, well below the national rate of 5.4%. 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).
South Mountain 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| South Mountain | 2.26 | 52.1 | 4.8% | 35.9% | 4.8% | 1975 | $836 | 9.6% | 86.2% | 0.4% |
| Mont Alto | 2.34 | 40.8 | 5.4% | 25.0% | 2.7% | 1972 | $1,209 | 17.0% | 89.2% | 6.8% |
| Fayetteville | 2.28 | 52.1 | 5.4% | 12.9% | 12.6% | 1979 | $1,029 | 28.1% | 94.7% | 3.2% |
| Caledonia Park | 2.59 | 46.9 | 10.1% | 9.5% | 20.8% | 1972 | $1,084 | 27.2% | 91.5% | 3.4% |
| Blue Ridge Summit | 2.12 | 49.8 | 7.4% | 24.1% | 9.2% | 1968 | $879 | 25.0% | 87.3% | 9.2% |
| Virginia Mills | 2.25 | 49.5 | 9.7% | 11.0% | 13.1% | 1955 | $897 | 14.8% | 87.7% | 5.9% |
| Glen Forney | 2.02 | 62.5 | 3.6% | 4.8% | 8.4% | 1992 | $1,189 | 36.0% | 92.7% | 0.0% |
| Quincy | 2.59 | 56.7 | 4.1% | 31.2% | 19.1% | 1974 | $1,492 | 19.2% | 90.4% | 14.4% |
| Orrtanna | 2.59 | 47.3 | 13.9% | 14.9% | 16.8% | 1970 | $925 | 28.6% | 88.8% | 4.3% |
| Cold Spring | 2.88 | 40.1 | 11.1% | 4.7% | 14.7% | 1987 | $1,246 | 28.0% | 96.4% | 0.0% |
| Cashtown | 2.87 | 42.4 | 19.6% | 27.1% | 8.2% | 1974 | $692 | 33.0% | 92.2% | 0.0% |
All figures 2020–24.
Cities with similar populations: McNairy, TN · Retsof, NY · Relfs Bluff, AR · Redland, OK · Raybon, GA · Pumpkin Center, SD · Millersburg, IA · Middleton, GA · Middleport, PA · Meta, MO
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 South Mountain. 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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