St. Andrews or Saint Andrews It is part of the Columbia, South Carolina metropolitan area.
History
The Pine Grove Rosenwald School was listed on the National Register of Historic Places in 2009.
Geography
According to the United States Census Bureau, the CDP has a total area of , of which is land and , or 0.33%, is water.
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Racial and ethnic composition
{| class="wikitable sortable" style="text-align:center;"
|+St. Andrews CDP, South Carolina – Racial and ethnic composition<br><small></small>
!Race / Ethnicity <small>(NH = Non-Hispanic)</small>
!Pop 2000
!Pop 2010
!style="background-color: #ffffb3;" |Pop 2020
!% 2000
!% 2010
!style="background-color: #ffffb3;" |% 2020
|-
|White alone (NH)
|9,213
|5,516
|style='background: #ffffe6; |4,798
|42.23%
|26.92%
|style='background: #ffffe6; |23.21%
|-
|Black or African American alone (NH)
|11,427
|13,343
|style='background: #ffffe6; |13,351
|52.38%
|65.11%
|style='background: #ffffe6; |64.58%
|-
|Native American or Alaska Native alone (NH)
|51
|51
|style='background: #ffffe6; |39
|0.23%
|0.25%
|style='background: #ffffe6; |0.19%
|-
|Asian alone (NH)
|399
|395
|style='background: #ffffe6; |588
|1.83%
|1.93%
|style='background: #ffffe6; |2.84%
|-
|Native Hawaiian or Pacific Islander alone (NH)
|14
|15
|style='background: #ffffe6; |16
|0.06%
|0.07%
|style='background: #ffffe6; |0.08%
|-
|Other race alone (NH)
|45
|31
|style='background: #ffffe6; |98
|0.21%
|0.15%
|style='background: #ffffe6; |0.47%
|-
|Mixed race or Multiracial (NH)
|234
|388
|style='background: #ffffe6; |807
|1.07%
|1.89%
|style='background: #ffffe6; |3.90%
|-
|Hispanic or Latino (any race)
|431
|754
|style='background: #ffffe6; |978
|1.98%
|3.68%
|style='background: #ffffe6; |4.73%
|-
|Total
|21,814
|20,493
|style='background: #ffffe6; |20,675
|100.00%
|100.00%
|style='background: #ffffe6; |100.00%
|}
2020 census
As of the 2020 census, St. Andrews had a population of 20,675. The median age was 33.5 years. 21.6% of residents were under the age of 18 and 13.2% of residents were 65 years of age or older. For every 100 females there were 85.4 males, and for every 100 females age 18 and over there were 81.6 males age 18 and over.
There were 9,974 households in St. Andrews, of which 24.3% had children under the age of 18 living in them. Of all households, 20.9% were married-couple households, 26.1% were households with a male householder and no spouse or partner present, and 44.4% were households with a female householder and no spouse or partner present. About 43.4% of all households were made up of individuals and 10.8% had someone living alone who was 65 years of age or older. There were 4,364 families in the CDP.
! Race
! Num.
! Perc.
|-
| White
| 4,969
| 24.0%
|-
| Black or African American
| 13,473
| 65.2%
|-
| American Indian and Alaska Native
| 60
| 0.3%
|-
| Asian
| 591
| 2.9%
|-
| Native Hawaiian or Pacific Islander
| 16
| 0.1%
|-
| Some other race
| 411
| 2.0%
|-
| Two or more races
| 1,155
| 5.6%
|-
| Hispanic or Latino (of any race)
| 978
| 4.7%
|}
2000 census
As of the census