Population 7,661 · Census ACS 2020–24
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Population and households in Allendale County
Household size in Allendale County
| Period | Allendale County | South Carolina | U.S. |
|---|---|---|---|
| 2006–10 | 2.58 | 2.54 | 2.68 |
| 2010–14 | 2.59 | 2.59 | 2.73 |
| 2015–19 | 2.28 | 2.57 | 2.71 |
| 2020–24 | 2.20 | 2.50 | 2.65 |
| Change | −0.38 | −0.04 | −0.03 |
Allendale County is a place of small households, averaging 2.20 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Household size has dropped from 2.58 in 2006–10, a much bigger shift than nationally. Only one other South Carolina county has smaller 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 Allendale County
| Period | Allendale County | South Carolina | U.S. |
|---|---|---|---|
| 2006–10 | 40.4 | 38.3 | 37.7 |
| 2010–14 | 39.2 | 39.3 | 38.6 |
| 2015–19 | 41.8 | 40.6 | 39.6 |
| 2020–24 | 45.4 | 41.2 | 40.1 |
| Change | +5.0 | +2.9 | +2.3 |
With a median age of 45.4, Allendale County is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. Since 2006–10, the median age has climbed from 40.4, in line with the national trend. The youngest areas are in the south, the oldest in the northeast.
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 Allendale County
| Period | Allendale County | South Carolina | U.S. |
|---|---|---|---|
| 2006–10 | 16.8% | 13.0% | 12.3% |
| 2010–14 | 16.8% | 13.0% | 12.3% |
| 2015–19 | 16.0% | 11.8% | 11.6% |
| 2020–24 | 14.8% | 11.7% | 11.6% |
| Change | −2.0 pts | −1.3 pts | −0.6 pts |
Single-parent households are common in Allendale County: 14.8% of all households, against 11.6% nationally. Since 2006–10, the single-parent share has fallen 2.0 points, a much bigger shift than nationally. Allendale County has a higher share of single-parent households than at least four in five South Carolina counties.
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 Allendale County
Renters in Allendale County
| Period | Allendale County | South Carolina | U.S. |
|---|---|---|---|
| 2006–10 | 40.9% | 30.1% | 33.3% |
| 2010–14 | 35.2% | 31.4% | 35.6% |
| 2015–19 | 31.8% | 30.6% | 36.0% |
| 2020–24 | 38.3% | 28.1% | 34.8% |
| Change | −2.7 pts | −2.0 pts | +1.5 pts |
Renting is a bit more common in Allendale County than nationally: 38.3% of households rent their homes, against 34.8% for the U.S. About two-thirds of owners (65.6%) have paid off their mortgages, well above the national share of 39.8%. Since 2006–10, the renter share has fallen 2.7 points, even as the national share rose. Only one other South Carolina county has a higher share of renters.
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 Allendale County
| Period | Allendale County | South Carolina | U.S. |
|---|---|---|---|
| 2006–10 | 23.8% | 14.2% | 11.4% |
| 2010–14 | 23.4% | 14.2% | 11.4% |
| 2015–19 | 30.3% | 13.3% | 11.1% |
| 2020–24 | 17.0% | 11.8% | 9.6% |
| Change | −6.8 pts | −2.5 pts | −1.8 pts |
Vacant homes make up 17.0% of the housing in Allendale County, 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 has fallen 6.8 points since 2006–10, a much bigger shift than nationally.
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 Allendale County
| Period | Allendale County | South Carolina | U.S. |
|---|---|---|---|
| 2006–10 | 1977 | 1984 | 1974 |
| 2010–14 | 1974 | 1985 | 1975 |
| 2015–19 | 1980 | 1987 | 1977 |
| 2020–24 | 1981 | 1991 | 1980 |
| Change | +4 | +7 | +6 |
The typical home in Allendale County was built around 1981, about the same vintage as the country's housing overall (1980). Homes here are older than in South Carolina as a whole, where the median home dates to 1991. The median year built has moved up from 1977 in 2006–10, a sign of steady new building. The newest homes are mostly in the northwest, the oldest in the northeast.
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 Allendale County
| Period | Allendale County | South Carolina | U.S. |
|---|---|---|---|
| 2006–10 | $547 | $780 | $965 |
| 2010–14 | $562 | $859 | $1,040 |
| 2015–19 | $639 | $984 | $1,213 |
| 2020–24 | $653 | $1,294 | $1,571 |
| Change | +$106 | +$514 | +$606 |
A typical rental in Allendale County costs $653 a month with utilities, well below the national median of $1,571. Rent has climbed $106 a month since 2006–10, up 19%, a slower climb than the nation's. The typical renter here spends 29.6% of household income on rent, just under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally. Allendale County has the lowest rents of any South Carolina county.
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 Allendale County
Bachelor's degrees in Allendale County
| Period | Allendale County | South Carolina | U.S. |
|---|---|---|---|
| 2006–10 | 16.0% | 25.2% | 28.4% |
| 2010–14 | 13.0% | 26.5% | 29.6% |
| 2015–19 | 9.4% | 28.9% | 32.1% |
| 2020–24 | 15.1% | 32.6% | 35.6% |
| Change | −1.0 pts | +7.4 pts | +7.2 pts |
Fewer adults in Allendale County have a four-year degree than in the country as a whole: 15.1%, against 35.6% nationally. The share with a degree has edged down 1.0 points since 2006–10, even as the national share rose. College graduates are most concentrated in the northeast and least in the south.
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 Allendale County
| Period | Allendale County | South Carolina | U.S. |
|---|---|---|---|
| 2006–10 | 76.1% | 84.0% | 84.9% |
| 2010–14 | 71.7% | 85.7% | 86.1% |
| 2015–19 | 78.6% | 87.8% | 87.7% |
| 2020–24 | 79.8% | 90.2% | 89.3% |
| Change | +3.8 pts | +6.2 pts | +4.3 pts |
About one in five adults in Allendale County never finished high school, well above the national share: only 79.8% have a diploma or equivalent, against 89.3% nationally. The share with a diploma has risen 3.8 points since 2006–10, mirroring the country. Of South Carolina's 46 counties, only two have a lower share of high school graduates.
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 Allendale County
| Period | Allendale County | South Carolina | U.S. |
|---|---|---|---|
| 2006–10 | 17.4% | 9.1% | 8.1% |
| 2010–14 | 18.3% | 10.6% | 9.4% |
| 2015–19 | 16.0% | 5.8% | 5.6% |
| 2020–24 | 8.0% | 4.9% | 5.4% |
| Change | −9.4 pts | −4.2 pts | −2.7 pts |
Unemployment in Allendale County runs well above the national rate: 8.0% of the labor force was out of work and looking, against 5.4%. Since 2006–10, unemployment has fallen 9.4 points, a much bigger shift than nationally. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current 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).
Allendale County compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Allendale County | 2.20 | 45.4 | 14.8% | 38.3% | 17.0% | 1981 | $653 | 15.1% | 79.8% | 8.0% |
| Hampton County | 2.48 | 41.4 | 15.9% | 26.6% | 16.1% | 1983 | $822 | 12.4% | 85.0% | 8.6% |
| Colleton County | 2.39 | 42.6 | 16.5% | 26.7% | 14.0% | 1987 | $1,002 | 17.7% | 84.5% | 8.9% |
| Dorchester County | 2.69 | 38.3 | 14.0% | 24.5% | 7.7% | 1999 | $1,575 | 29.6% | 92.0% | 4.9% |
| Jefferson County | 2.63 | 41.5 | 17.6% | 31.9% | 17.6% | 1983 | $709 | 13.3% | 85.1% | 5.4% |
| Berkeley County | 2.64 | 38.4 | 10.5% | 25.5% | 7.4% | 2000 | $1,784 | 33.3% | 92.1% | 3.2% |
| Charleston County | 2.36 | 40.0 | 8.2% | 36.1% | 12.4% | 1990 | $1,834 | 50.7% | 93.4% | 3.4% |
| Washington County | 2.62 | 41.3 | 19.8% | 35.5% | 17.2% | 1982 | $817 | 17.1% | 84.2% | 8.6% |
| Baldwin County | 2.36 | 39.0 | 14.5% | 38.9% | 17.4% | 1987 | $961 | 25.5% | 87.2% | 6.4% |
| Wilkinson County | 2.51 | 43.9 | 13.4% | 19.5% | 17.9% | 1982 | $831 | 12.1% | 88.7% | 5.0% |
| Jones County | 2.66 | 42.8 | 12.3% | 16.4% | 10.5% | 1990 | $956 | 18.6% | 90.9% | 3.8% |
All figures 2020–24.
Counties with similar populations: Upton County, TX · Clay County, TN · Mora County, NM · Harding County, NM · Hyde County, NC · Schoolcraft County, MI · Sargent County, ND · Menard County, TX · Jeff Davis County, TX · Eureka County, NV
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 Allendale County. 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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