Round O ZIP Codes — Colleton County, SC

There is one unique ZIP code in Round O, South Carolina and it is 29474. Area code: 843.

ZIP codes

100.71

sq mi land

0.19

sq mi water

843

area code

Round O, SC ZIP code map

About Round O, SC

Round O, South Carolina, is a small and charming community located within Colleton County. Known for its rural appeal and serene landscapes, this area offers a unique glimpse into Southern living. With a single ZIP code of 29474, Round O embodies the quaint traits of a close-knit town while being a part of the natural beauty characteristic of South Carolina.

Location & geography

Round O is situated in the Lowcountry region of South Carolina, characterized by its flat terrain and marshlands. Nearby cities include Walterboro, which is approximately 15 miles to the southeast, and Williams, located about 17 miles to the northwest. The total land area of Round O is 100.71 square miles, with a small water area of 0.19 square miles, indicating the presence of local water bodies amidst the expansive land.

Community & economy

The community in Round O is defined by its friendly residents and a laid-back lifestyle that embodies the spirit of rural South Carolina. The local economy is supported by agriculture and small businesses, contributing to the daily life of its residents. Daily activities often revolve around community gatherings, local events, and enjoying the natural surroundings, fostering a strong sense of togetherness.

Transportation

Transportation in Round O is primarily facilitated by local roads and highways such as U.S. Route 15, which connects residents to neighboring towns and cities. The nearest major airport is located in Charleston, approximately 60 miles away, offering wider travel options for residents. Public transit options are minimal, with the focus primarily on personal vehicles for commuting.

History

Round O was established in the early days of South Carolina's development, reflecting the agricultural heritage of the region. Over the years, agriculture has remained a key industry, with local farms playing a vital role in the economy. Notable events in the area's history include the growth of the community through the 20th century, adapting to changes while preserving its rural charm.

Did you know?

One surprising fact about Round O is its standing as one of the quieter gems in Colleton County, often overlooked by tourists seeking Southern destinations. Additionally, the area’s name, 'Round O,' is believed to have originated from the circular shape of a nearby landmark, reflecting the town's unique geography.

ZIP codes for Round O, SC (1)

ZIP code	City	County	Map
29474	Round O	Colleton	View map

Demographics & statistics

1,487

Population

54.1

Median age

$40,613

Median household income

$25,406

Per capita income

$124,500

Median home value

$789

Median monthly rent

67.2%

Home ownership

17.1%

Poverty rate

0.4%

Unemployment

728

Housing units

8.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

120

45–54

137

55–59

60–64

178

65–74

203

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	209	14.1%
18 and over	1,278	85.9%
65 and over	478	32.1%
Median age	54.1 years

Race & ethnicity

White 64.2%

Black or African American 28%

Two or more races 4.2%

Hispanic or Latino 2.4%

Other race 1.2%

Group	Count	%
White	978	64.2%
Black or African American	426	28%
Two or more races	64	4.2%
Hispanic or Latino	36	2.4%
Other race	19	1.2%

Household income

Under $10k 13.2%

$10k–$15k 1.1%

$15k–$25k 10.3%

$25k–$35k 15.4%

$35k–$50k 19.3%

$50k–$75k 17.2%

$75k–$100k 10.7%

$100k–$150k 12.8%

Range	% of households
Under $10k	13.2%
$10k–$15k	1.1%
$15k–$25k	10.3%
$25k–$35k	15.4%
$35k–$50k	19.3%
$50k–$75k	17.2%
$75k–$100k	10.7%
$100k–$150k	12.8%
Median income	$40,613

Housing

Home values

Under $50k 4.0%

$50k–$100k 21.8%

$100k–$150k 28.2%

$150k–$200k 16.2%

$200k–$300k 20.8%

$300k–$500k 9.0%

Housing overview

Metric	Value
Median home value	$124,500
Median rent / month	$789
Owner occupied	67.2%
Renter occupied	32.8%
Vacant	17.4%
Single-family detached	59.1%
Large apartment buildings	0.0%
Mobile homes	40.9%
Median rooms	6.0
Avg household size (owned)	1.70

Year built

Era	%
2020 or later	0.7%
2010–2019	4.9%
2000–2009	20.2%
1990–1999	13.4%
1980–1989	17.4%
1970–1979	19.2%
1960–1969	11.7%
1950–1959	7.7%
1940–1949	0.0%
1939 or earlier	4.7%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	23.5%
3 bedrooms	57.6%
4 bedrooms	14.0%
5+ bedrooms	4.9%

Vehicles per household

Vehicles	% of households
No vehicle	13.9%
1 vehicle	31.4%
2 vehicles	21.5%
3 or more	33.2%

Heating fuel

Fuel type	%
Utility gas	7.4%
Electricity	76.8%
Propane / LP gas	12.0%
Wood	3.8%

Households & families

Household type	Count	%
Married-couple family	301	36.5%
Cohabiting couple	93	11.3%
Male householder, no spouse	178	21.6%
Female householder, no spouse	253	30.7%
Households with children under 18	110	13.3%
Households with seniors (65+)	328	39.8%
Average household size	1.79

Marital status

Status	Male	Female
Never married	19.4%	5.9%
Married	42.4%	44.4%
Separated	0.0%	1.2%
Widowed	4.8%	25.2%
Divorced	33.4%	23.3%

Education

Less than 9th grade 2.7%

Some HS, no diploma 12.9%

HS graduate 40.9%

Some college, no degree 24.5%

Associate's degree 10.7%

Bachelor's degree 3.4%

Graduate / professional 4.9%

Metric	%
HS diploma or higher	84.4%
Bachelor's or higher	8.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	105	75.0%
High school	15	10.7%
College / grad school	20	14.3%

Employment

Industry of employment

Education & healthcare 24.8%

Transportation & utilities 13.5%

Construction 12.0%

Professional & management 12.0%

Retail trade 11.7%

Other services 10.6%

Manufacturing 5.6%

Finance & real estate 5.4%

Public administration 2.4%

Arts, food & hospitality 2.0%

Occupation

Category	%
Management, business & arts	25.7%
Service	11.7%
Sales & office	26.3%
Natural resources & construction	28.9%
Production & transportation	7.4%

Employment type

Type	%
Private sector	88.9%
Government	11.1%
Self-employed	0.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	90.2%
Carpool	3.3%
Public transit	0.0%
Walk	3.0%
Other means	3.5%
Avg commute (minutes)	34.3

Poverty

All people 17.1%

Under 18 years 4.3%

18 and over 19.2%

Married-couple families 20.3%

Female-led households 7.5%

Income support

Source	% of households
Social Security	45.3%
Retirement income	19.0%
Supplemental Security	6.5%
Cash public assistance	0.0%
Food stamps / SNAP	21.7%

Health indicators

Condition	%
High blood pressure	44.7%
High cholesterol	37.5%
Heart disease	8.5%
Stroke	4.8%
Asthma	10.8%
Arthritis	33.1%
Kidney disease	3.9%
Pulmonary disease	10.3%
Cancer	6.9%

Behavior / access	%
Binge drinking	15.6%
No physical activity	31.6%
Less than 7 hrs sleep	38.1%
Fair or poor health	21.7%
Poor mental health	16.2%
Poor physical health	14.7%
No health insurance	18.6%
Visited doctor (checkup)	78.6%
Visited dentist	58.8%
Cholesterol screening	89.3%
Teeth loss	20.4%

Veterans & disability

Veterans	Count	%
Civilian veterans	171	13.4%

Disability	%
Any disability	25.4%
Under 18	4.3%
18–64 years	30.3%
65 and over	26.4%

Health insurance coverage

Type	%
Private insurance	61.1%
Public insurance	47.6%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,434	96.4%
Spanish	17	1.2%
Other Indo-European	17	1.2%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,431	96.2%
Born in same state	1,430	96.2%
Born in different state	1,182	79.5%
Foreign born	1	0.1%
Naturalized citizen	56	3.8%
Not a US citizen	30	53.6%

Ancestry

Ancestry	Count	%
French	154	10.4%
Arab	77	5.2%

Ancestry	Count	%
Italian	68	4.6%
Polish	11	0.7%

Technology access

Metric	% of households
Computer access	55.5%
Internet access	88.5%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Round O, SC have?

Round O, SC has one ZIP code: 29474. Each ZIP code serves a distinct delivery area within the city and surrounding region.