29321 ZIP Code — Buffalo, SC

Union County, South Carolina

ZIP code 29321 is located in Buffalo, South Carolina, within Union County. It covers approximately 39.32 square miles and serves a population of 3,248 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 864.

About ZIP code 29321

The housing stock consists of a higher-than-average concentration of mobile homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $66,400. Owner-occupancy is high at 76%, well above the national average.

Median household income is $31,283. Poverty affects 37% of residents, above the national average. SNAP benefit usage at 27% of households reflects economic stress in the area. 48% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 24 minutes is near the national average.

College attainment at 15% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (23%) compared to national benchmarks.

Notable community characteristics include a notable veteran presence at 13% of civilians, above the national average of 7%; and disability rates above the national average at 26%.

Overall, ZIP code 29321 reflects a community defined by a trades-oriented workforce, economic challenges above the national average, a strong veteran community, high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.

3,248

population

39.32

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

29321 ZIP code map

Cities in ZIP code 29321

Below are the cities the US Postal Service accepts for ZIP code 29321. Using any city not on this list may result in mail delivery delays.

City	Status
Buffalo	Preferred

Nearby ZIP codes

29379 Union (6.4 mi) 29374 Pauline (7.8 mi) 29395 Jonesville (8.4 mi) 29353 Jonesville (8.7 mi) 29335 Enoree (9.7 mi) 29302 Spartanburg (12.9 mi) 29372 Pacolet (13.1 mi) 29376 Roebuck (13.9 mi) 29306 Spartanburg (16.2 mi) 29388 Woodruff (16.8 mi) 29325 Clinton (17.5 mi) 29369 Moore (18.7 mi)

Demographics updated 05/2026

Population
Total population	3,248
Population density	83 / sq mi
State FIPS	45
County FIPS	087

Geography
Land area	39.32 sq mi
Water area	0.02 sq mi
Latitude	34.7210
Longitude	-81.7407
Timezone	Eastern (ET)
Area code	864

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	71.9%	58.3%	45.8%
$50k – $100k	26.9%	30.3%	30.5%
$100k – $200k	1.2%	10.3%	18.6%
Over $200k	0.0%	1.1%	5.1%

Demographics & statistics

3,248

Population

People per sq mi

35.1

Median age

$31,283

Median household income

$17,852

Per capita income

$66,400

Median home value

$649

Median monthly rent

75.8%

Home ownership

36.6%

Poverty rate

8.3%

Unemployment

1,123

Housing units

14.7%

Bachelor's or higher

Age distribution

Male Female

129

Under 5

139

192

5–9

207

150

10–14

161

15–19

20–24

191

25–34

204

206

35–44

221

274

45–54

295

55–59

60–64

127

65–74

136

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,135	34.9%
18 and over	2,113	65.1%
65 and over	387	11.9%
Median age	35.1 years

Race & ethnicity

White 89.3%

Black or African American 5.9%

Two or more races 4.8%

Group	Count	%
White	2,901	89.3%
Black or African American	192	5.9%
Two or more races	155	4.8%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	71.9%	58.3%	45.8%
$50k – $100k	26.9%	30.3%	30.5%
$100k – $200k	1.2%	10.3%	18.6%
Over $200k	0.0%	1.1%	5.1%

Under $10k 13.5%

$10k–$15k 0.9%

$15k–$25k 23.8%

$25k–$35k 20.0%

$35k–$50k 4.2%

$50k–$75k 22.4%

$75k–$100k 6.3%

$100k–$150k 8.4%

$150k–$200k 0.3%

$200k+ 0.2%

Range	% of households
Under $10k	13.5%
$10k–$15k	0.9%
$15k–$25k	23.8%
$25k–$35k	20.0%
$35k–$50k	4.2%
$50k–$75k	22.4%
$75k–$100k	6.3%
$100k–$150k	8.4%
$150k–$200k	0.3%
$200k+	0.2%
Median income	$31,283

Housing

Home values

Under $50k 41.4%

$50k–$100k 28.8%

$100k–$150k 16.2%

$150k–$200k 5.1%

$200k–$300k 1.5%

$300k–$500k 1.8%

$500k–$1M 4.1%

$1M+ 1.1%

Housing overview

Metric	Value
Median home value	$66,400
Median rent / month	$649
Owner occupied	75.8%
Renter occupied	24.2%
Vacant	13.9%
Single-family detached	58.9%
Large apartment buildings	0.0%
Mobile homes	41.1%
Median rooms	5.2
Avg household size (owned)	2.24

Year built

Era	%
2020 or later	0.0%
2010–2019	2.1%
2000–2009	18.0%
1990–1999	20.9%
1980–1989	12.3%
1970–1979	19.0%
1960–1969	2.5%
1950–1959	10.9%
1940–1949	4.2%
1939 or earlier	10.1%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	32.8%
3 bedrooms	43.8%
4 bedrooms	21.1%
5+ bedrooms	2.3%

Vehicles per household

Vehicles	% of households
No vehicle	12.4%
1 vehicle	31.7%
2 vehicles	35.8%
3 or more	20.2%

Heating fuel

Fuel type	%
Utility gas	16.6%
Electricity	75.5%
Propane / LP gas	2.2%
Fuel oil	3.9%
Wood	0.8%
No fuel used	1.0%

Households & families

Household type	Count	%
Married-couple family	369	30.2%
Cohabiting couple	184	15.1%
Male householder, no spouse	361	29.5%
Female householder, no spouse	308	25.2%
Households with children under 18	465	38.1%
Households with seniors (65+)	350	28.6%
Average household size	2.66

Marital status

Status	Male	Female
Never married	34.1%	28.9%
Married	35.1%	39.2%
Separated	0.0%	5.6%
Widowed	5.8%	14.0%
Divorced	25.1%	12.3%

Education

Less than 9th grade 7.3%

Some HS, no diploma 16.0%

HS graduate 35.8%

Some college, no degree 20.2%

Associate's degree 6.1%

Bachelor's degree 13.8%

Graduate / professional 0.8%

Metric	%
HS diploma or higher	76.8%
Bachelor's or higher	14.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	42	4.6%
Kindergarten	162	17.8%
Elementary school	478	52.5%
High school	196	21.5%
College / grad school	32	3.5%

Employment

Industry of employment

Education & healthcare 30.2%

Manufacturing 24.1%

Retail trade 12.3%

Finance & real estate 6.3%

Transportation & utilities 5.8%

Other services 5.7%

Construction 4.3%

Professional & management 3.5%

Public administration 3.5%

Information 2.9%

Wholesale trade 1.4%

Occupation

Category	%
Management, business & arts	35.3%
Service	11.0%
Sales & office	25.2%
Natural resources & construction	9.0%
Production & transportation	19.4%

Employment type

Type	%
Private sector	86.0%
Government	8.1%
Self-employed	5.0%
Unpaid family workers	1.0%

Commute

Method	%
Drive alone	74.4%
Carpool	23.0%
Public transit	0.0%
Walk	0.0%
Work from home	1.7%
Other means	0.9%
Avg commute (minutes)	24.2

Poverty

All people 36.6%

Under 18 years 63.0%

18 and over 22.4%

Married-couple families 10.6%

Female-led households 59.5%

Income support

Source	% of households
Social Security	47.6%
Retirement income	14.2%
Supplemental Security	9.2%
Cash public assistance	0.7%
Food stamps / SNAP	26.7%

Health indicators

Condition	%
Obesity	36.4%
High blood pressure	39.3%
High cholesterol	37.9%
Diabetes	12.8%
Heart disease	7.8%
Stroke	4.0%
Asthma	10.5%
Arthritis	31.1%
Kidney disease	3.4%
Pulmonary disease	9.7%
Cancer	6.8%

Behavior / access	%
Smoking	23.3%
Binge drinking	17.6%
No physical activity	29.8%
Less than 7 hrs sleep	34.5%
Depression	24.8%
Fair or poor health	18.7%
Poor mental health	16.5%
Poor physical health	13.6%
No health insurance	17.7%
Visited doctor (checkup)	78.2%
Visited dentist	61.2%
Cholesterol screening	87.8%
Teeth loss	19.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	265	12.5%

Disability	%
Any disability	26.2%
Under 18	16.2%
18–64 years	32.6%
65 and over	26.9%

Health insurance coverage

Type	%
Private insurance	51.5%
Public insurance	51.5%
No insurance	11.2%
Uninsured under 19	8.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,980	91.7%
Spanish	7	0.2%
Other Indo-European	0	0.0%
Asian & Pacific Islander	7	0.2%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,241	99.8%
Born in same state	3,241	99.8%
Born in different state	2,777	85.5%
Foreign born	0	0.0%
Naturalized citizen	7	0.2%
Not a US citizen	7	100.0%

Ancestry

Ancestry	Count	%
Arab	538	16.6%
Italian	244	7.5%
French	142	4.4%

Ancestry	Count	%
German	18	0.6%
Polish	11	0.3%

Technology access

Metric	% of households
Computer access	37.6%
Internet access	89.0%

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

Frequently asked questions about ZIP code 29321

What city is ZIP code 29321 in?

ZIP code 29321 is primarily assigned to Buffalo, South Carolina.

What county is ZIP code 29321 in?

ZIP code 29321 falls within Union County, South Carolina.

What is the poverty rate in ZIP code 29321?

37% of residents in ZIP code 29321 live below the poverty line, above the national average.

Is ZIP code 29321 family-oriented?

35% of residents in ZIP code 29321 are under 18, reflecting a younger, family-oriented community.

Does ZIP code 29321 have a large retiree population?

48% of households in ZIP code 29321 receive Social Security income, suggesting a significant retiree or disability population.

How educated is the population of ZIP code 29321?

15% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

What timezone is ZIP code 29321 in?

ZIP code 29321 observes the EST timezone.