Town · South Carolina
Clio, South Carolina
Clio, town, in Marlboro County, South Carolina. Clio had 577 residents on July 1, 2025 by the Census Bureau's estimate, down 4.6% since 2020; the 2020 Census counted 608 and the ACS 2020-2024 5-year estimates put it at 840 (±271). GEOID 4515310.
Residents, July 2025 estimate
577
Census Bureau estimate (no margin published)
2020 Census count: 608 · ACS 2020-2024: 840 ±271
Median household income
$36,359
±$11,301 (90% margin)
South Carolina: $69,324
Median home value
$106,600
±$31,257 (90% margin)
South Carolina: $259,000
Median gross rent
$575
±$201 (90% margin)
South Carolina: $1,180
Where is Clio and what county is it in?
Clio is a town in Marlboro County, South Carolina. It covers 0.9 square miles of land, 710 residents per square mile in 2020.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Clio, and is it growing?
The Census Bureau estimates that 577 people lived in Clio on July 1, 2025, down 4.6% since 2020, while South Carolina grew 8.8%. The 2020 Census counted 608 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 840 (±271).
| Measure | Clio | Marlboro County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 840 ±271 | 25,975 | no clear change |
| Households | 333 ±88 | 9,789 | no clear change |
| Average household size | 2.52 ±0.66 | 2.40 | no clear change |
| Housing units | 383 ±93 | 12,077 | no clear change |
Clio's population since 2000
From 774 in 2000 to 577 in 2025: down 25.5%. The 2000, 2010 and 2020 figures are census counts, each for Clio as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Clio?
The median resident of Clio is 38.3 years old; 9.4% are under 18 and 16.4% are 65 or older. The largest group is non-Hispanic Black residents at 62.4%, then non-Hispanic white residents at 13.3%.
| Measure | Clio | Marlboro County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 38.3 ±14.5 | 41.7 | no clear change |
| Under 18 years | 9.4% ±5.6 pts | 19.9% | – |
| 65 years and over | 16.4% ±6.7 pts | 19.1% | – |
| Male | 48.6% ±12.0 pts | 52.7% | – |
| Hispanic or Latino (any race) | 9.8% ±10.2 pts | 2.7% | – |
| White alone, not Hispanic | 13.3% ±8.3 pts | 38.2% | – |
| Black or African American alone, not Hispanic | 62.4% ±19.0 pts | 47.7% | no clear change |
| Asian alone, not Hispanic | 0.0% ±5.2 pts | 0.4% | – |
| American Indian and Alaska Native alone, not Hispanic | 10.2% ±8.4 pts | 3.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±5.2 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.3% ±4.1 pts | 7.2% | – |
| Some other race alone, not Hispanic | 0.0% ±5.2 pts | 0.7% | – |
| Born outside the United States | 8.6% ±10.5 pts | 2.1% | – |
| Speak a language other than English at home (age 5+) | 12.3% ±12.9 pts | 2.7% | – |
| Civilian veterans (age 18+) | 2.2% ±2.5 pts | 5.9% | – |
| With a disability | 12.9% ±5.6 pts | 20.3% | – |
| No health insurance coverage | 24.3% ±13.7 pts | 12.6% | no clear change |
| High school graduate or higher (age 25+) | 92.6% ±5.8 pts | 79.1% | – |
| Bachelor's degree or higher (age 25+) | 10.5% ±8.4 pts | 9.0% | – |
| Graduate or professional degree (age 25+) | 2.5% ±2.5 pts | 2.9% | – |
| Lived in the same house a year earlier | 92.9% ±7.8 pts | 89.0% | – |
| Moved from another state in the past year | 6.0% ±7.5 pts | 2.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Clio earn?
Half of Clio's 333 households earn less than $36,359 a year (±$11,301), against $34,301 in Marlboro County and $69,324 in South Carolina. In 2015-2019 it was $39,287 in 2024 dollars; the margins of error cannot tell the two periods apart. 29.2% of residents live below the poverty line.
| Measure | Clio | Marlboro County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $36,359 ±$11,301 | $34,301 | no clear change |
| Mean household income | $54,958 ±$11,347 | $51,818 | – |
| Per capita income | $25,293 ±$4,182 | $21,486 | no clear change |
| People below the poverty line | 29.2% ±14.0 pts | 28.5% | no clear change |
| Children under 18 below the poverty line | 59.5% ±34.9 pts | 39.3% | – |
| Households receiving SNAP | 11.7% ±7.3 pts | 23.0% | – |
| Households with a computer | 85.6% ±10.3 pts | 84.3% | – |
| Households with a broadband subscription | 80.2% ±13.2 pts | 70.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Clio?
Owners occupy 69.1% of Clio's occupied homes and renters 30.9%. The median owner-occupied home is valued at $106,600 by its owner (±$31,257). The median renter pays $575 a month including utilities, and 72.5% of renters pay 35% or more of their income on rent.
| Measure | Clio | Marlboro County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $106,600 ±$31,257 | $82,000 | no clear change |
| Median gross rent | $575 ±$201 | $689 | no clear change |
| Renters paying 35% or more of income on rent | 72.5% ±26.7 pts | 44.6% | no clear change |
| Median monthly owner costs, with a mortgage | $1,643 ±$351 | $1,090 | – |
| Owner-occupied homes | 69.1% ±14.7 pts | 63.0% | no clear change |
| Renter-occupied homes | 30.9% ±14.7 pts | 37.0% | – |
| Housing units | 383 ±93 | 12,077 | no clear change |
| Homeowner vacancy rate | 5.0% ±6.0 pts | 3.0% | – |
| Rental vacancy rate | 0.0% ±33.7 pts | 7.0% | – |
| Single-family detached homes | 64.0% ±11.7 pts | 62.0% | – |
| Mobile homes | 19.8% ±9.3 pts | 25.9% | – |
| Built 2020 or later | 0.0% ±11.1 pts | 0.3% | – |
| Built 2010 to 2019 | 0.0% ±11.1 pts | 6.1% | – |
| Built 1939 or earlier | 30.5% ±14.9 pts | 9.3% | – |
| Households with no vehicle | 24.0% ±12.0 pts | 15.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Clio work and get to work?
87.7% of Clio's workers drive alone. The average trip to work takes 47.9 minutes.
| Measure | Clio | Marlboro County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 58.3% ±16.3 pts | 45.7% | – |
| Unemployment rate | 12.2% ±14.4 pts | 9.9% | – |
| Drove alone to work | 87.7% ±16.7 pts | 83.6% | – |
| Carpooled | 0.0% ±10.7 pts | 11.0% | – |
| Public transportation | 0.0% ±10.7 pts | 0.3% | – |
| Walked | 0.0% ±10.7 pts | 0.9% | – |
| Worked from home | 12.3% ±16.7 pts | 3.2% | – |
| Mean travel time to work | 47.9 min ±8.5 | 26.9 min | +20.6 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Clio?
No census tract lies mostly in Clio; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9605Marlboro County | 2,027 | $32,813 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Clio) · Census block assignment files
How does Clio compare with other places in South Carolina?
By the Census Bureau's July 2025 estimates, Clio is the 12,624th-most populous of the 19,476 U.S. incorporated places that have one and the 185th-most populous of 271 in South Carolina.
Clio is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 185th | 271 |
Clio's figures with every place in South Carolina (CSV)
Every place in South Carolina, sortable · Compare Clio with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Clio?
21 of the 57 figures for Clio on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Clio are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Clio.