Barnwell ZIP Codes — Barnwell County, SC

There is one unique ZIP code in Barnwell, South Carolina and it is 29812. Area code: 803.

ZIP codes

173.48

sq mi land

1.74

sq mi water

803

area code

Barnwell, SC ZIP code map

About Barnwell, SC

Barnwell, South Carolina, is a small yet vibrant city located in the heart of Barnwell County. Known for its rich cultural heritage and friendly community, Barnwell offers a quaint atmosphere that is appealing to both residents and visitors alike. With a blend of historical charm and modern conveniences, the city serves as a quiet retreat while still providing access to vital services and amenities.

Location & geography

Situated in the southeastern region of South Carolina, Barnwell is approximately 25 miles from the larger city of Aiken and about 30 miles from Augusta, Georgia. The city's terrain features a mix of forested areas and open spaces, contributing to its picturesque environment, while the water area covers 1.74 square miles, adding to the overall natural beauty. This combination of land and water makes Barnwell an appealing destination for outdoor enthusiasts.

Community & economy

The community of Barnwell reflects a friendly, small-town atmosphere with strong ties among its residents. Historically, the area has been supported by agriculture and manufacturing industries, which have shaped the local economy and job market. Daily life in Barnwell includes various community events, local festivals, and gatherings, accentuating the city's social fabric.

Transportation

Barnwell is conveniently accessible via U.S. Route 278, which connects it to other significant locations in South Carolina. The nearest major airports include Augusta Regional Airport and Columbia Metropolitan Airport, both providing essential services for travel. Public transportation options may be limited, but the city's layout allows for easy movement and access by car.

History

Founded in the early 19th century, Barnwell has evolved from a small agricultural community into a vibrant city with a diverse economic base. Key industries have historically included farming and textiles, which played an essential role in the local economy. Significant events in Barnwell's history include the construction of railroads that contributed to its growth and connectivity with surrounding regions.

Did you know?

A little-known fact about Barnwell is that it was once home to a thriving railroad industry, which significantly contributed to its development in the late 19th century. Additionally, Barnwell hosts the annual Barnwell County Fair, a beloved local tradition that draws visitors for entertainment, food, and community spirit.

ZIP codes for Barnwell, SC (1)

ZIP code	City	County	Map
29812	Barnwell	Barnwell	View map

Demographics & statistics

10,773

Population

39.7

Median age

$42,038

Median household income

$25,711

Per capita income

$98,400

Median home value

$686

Median monthly rent

74.4%

Home ownership

29.0%

Poverty rate

6.0%

Unemployment

3,897

Housing units

17.5%

Bachelor's or higher

Age distribution

Male Female

458

Under 5

466

361

5–9

368

359

10–14

366

358

15–19

364

398

20–24

404

566

25–34

575

516

35–44

525

642

45–54

653

332

55–59

337

356

60–64

362

634

65–74

645

255

75–84

260

106

85+

107

← Male

Female →

Age summary

Group	Count	%
Under 18	2,761	25.6%
18 and over	8,012	74.4%
65 and over	2,007	18.6%
Median age	39.7 years

Race & ethnicity

White 54.1%

Black or African American 40%

Two or more races 2.3%

Hispanic or Latino 1.6%

Other race 1.4%

Asian 0.4%

American Indian / Alaska Native 0.2%

Group	Count	%
White	5,922	54.1%
Black or African American	4,378	40%
Two or more races	256	2.3%
Hispanic or Latino	179	1.6%
Other race	151	1.4%
Asian	45	0.4%
American Indian / Alaska Native	21	0.2%

Household income

Under $10k 13.0%

$10k–$15k 10.5%

$15k–$25k 7.3%

$25k–$35k 12.6%

$35k–$50k 11.7%

$50k–$75k 10.7%

$75k–$100k 15.5%

$100k–$150k 11.2%

$150k–$200k 3.8%

$200k+ 3.7%

Range	% of households
Under $10k	13.0%
$10k–$15k	10.5%
$15k–$25k	7.3%
$25k–$35k	12.6%
$35k–$50k	11.7%
$50k–$75k	10.7%
$75k–$100k	15.5%
$100k–$150k	11.2%
$150k–$200k	3.8%
$200k+	3.7%
Median income	$42,038

Housing

Home values

Under $50k 23.3%

$50k–$100k 27.8%

$100k–$150k 11.5%

$150k–$200k 14.9%

$200k–$300k 13.7%

$300k–$500k 8.2%

$500k–$1M 0.3%

$1M+ 0.3%

Housing overview

Metric	Value
Median home value	$98,400
Median rent / month	$686
Owner occupied	74.4%
Renter occupied	25.6%
Vacant	14.9%
Single-family detached	61.1%
Large apartment buildings	2.1%
Mobile homes	26.3%
Median rooms	5.6
Avg household size (owned)	2.43

Year built

Era	%
2020 or later	0.3%
2010–2019	4.0%
2000–2009	7.4%
1990–1999	18.3%
1980–1989	23.7%
1970–1979	14.6%
1960–1969	9.0%
1950–1959	12.4%
1940–1949	1.3%
1939 or earlier	8.9%

Bedrooms

Size	% of units
No bedroom (studio)	2.3%
1 bedroom	5.3%
2 bedrooms	22.4%
3 bedrooms	53.4%
4 bedrooms	15.2%
5+ bedrooms	1.3%

Vehicles per household

Vehicles	% of households
No vehicle	12.2%
1 vehicle	34.6%
2 vehicles	29.8%
3 or more	23.5%

Heating fuel

Fuel type	%
Utility gas	9.9%
Electricity	78.4%
Propane / LP gas	10.9%
Wood	0.7%
No fuel used	0.1%

Households & families

Household type	Count	%
Married-couple family	1,612	38.0%
Cohabiting couple	147	3.5%
Male householder, no spouse	736	17.4%
Female householder, no spouse	1,747	41.2%
Households with children under 18	1,053	24.8%
Households with seniors (65+)	1,397	32.9%
Average household size	2.49

Marital status

Status	Male	Female
Never married	40.1%	33.3%
Married	43.3%	38.6%
Separated	3.4%	3.3%
Widowed	3.6%	14.3%
Divorced	9.6%	10.5%

Education

Less than 9th grade 7.2%

Some HS, no diploma 10.9%

HS graduate 35.6%

Some college, no degree 16.1%

Associate's degree 12.6%

Bachelor's degree 9.5%

Graduate / professional 8.0%

Metric	%
HS diploma or higher	81.8%
Bachelor's or higher	17.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	356	13.2%
Kindergarten	78	2.9%
Elementary school	1,156	42.8%
High school	671	24.8%
College / grad school	443	16.4%

Employment

Industry of employment

Education & healthcare 25.5%

Manufacturing 15.0%

Arts, food & hospitality 12.3%

Professional & management 11.6%

Transportation & utilities 8.8%

Retail trade 8.5%

Public administration 3.9%

Construction 3.8%

Agriculture & mining 3.0%

Other services 2.8%

Information 2.6%

Finance & real estate 1.6%

Wholesale trade 0.5%

Occupation

Category	%
Management, business & arts	29.1%
Service	23.7%
Sales & office	14.8%
Natural resources & construction	10.7%
Production & transportation	21.7%

Employment type

Type	%
Private sector	78.3%
Government	18.3%
Self-employed	2.9%
Unpaid family workers	0.5%

Commute

Method	%
Drive alone	82.5%
Carpool	11.2%
Public transit	1.4%
Walk	0.6%
Other means	1.0%
Avg commute (minutes)	29.5

Poverty

All people 29.0%

Under 18 years 50.9%

18 and over 21.3%

Married-couple families 2.9%

Female-led households 54.9%

Income support

Source	% of households
Social Security	37.4%
Retirement income	30.3%
Supplemental Security	7.6%
Cash public assistance	3.7%
Food stamps / SNAP	24.6%

Health indicators

Condition	%
High blood pressure	42.7%
High cholesterol	37.6%
Heart disease	7.4%
Stroke	4.3%
Asthma	11.0%
Arthritis	30.6%
Kidney disease	3.6%
Pulmonary disease	8.9%
Cancer	6.3%

Behavior / access	%
Binge drinking	16.2%
No physical activity	31.5%
Less than 7 hrs sleep	38.1%
Fair or poor health	20.0%
Poor mental health	16.3%
Poor physical health	13.4%
No health insurance	19.4%
Visited doctor (checkup)	79.5%
Visited dentist	60.1%
Cholesterol screening	88.7%
Teeth loss	20.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	574	7.2%

Disability	%
Any disability	18.9%
Under 18	2.2%
18–64 years	17.4%
65 and over	47.2%

Health insurance coverage

Type	%
Private insurance	55.8%
Public insurance	49.1%
Uninsured under 19	1.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	9,849	91.4%
Spanish	64	0.6%
Other Indo-European	11	0.1%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	10,372	96.3%
Born in same state	10,358	96.1%
Born in different state	7,133	66.2%
Foreign born	14	0.1%
Naturalized citizen	401	3.7%
Not a US citizen	122	30.4%

Ancestry

Ancestry	Count	%
Arab	2,456	22.8%
French	450	4.2%
Italian	150	1.4%

Ancestry	Count	%
Irish	9	0.1%
English	6	0.1%

Technology access

Metric	% of households
Computer access	39.4%
Internet access	83.4%

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

Frequently asked questions

What ZIP codes does Barnwell, SC have?

Barnwell, SC has one ZIP code: 29812. Each ZIP code serves a distinct delivery area within the city and surrounding region.