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Duncan, SC

Town in Spartanburg County, South Carolina. ZIP codes: 29334.

Population

4,310

Land area

6.6sq mi

People per sq mi

651

ZIP codes

1

Duncan and its ZIP codes

Full map

Duncan at a glance

  • Duncan is about 3.7 times as dense as South Carolina as a whole.
  • Households here earn a median of $52,500 a year, 24% less than the South Carolina figure of $69,324.
  • A typical owner-occupied home is valued at $211,400 (18% below South Carolina) and median rent is $1,032 a month.

Local data for Duncan, SC

Counts from official public data

Housing and community stats

Duncan, SC, American Community Survey 2020-2024

Full profile

Median household income

$52,500

Poverty rate

12.4%

Median home value

$211,400

Median rent

$1,032/mo

Homeownership

56.7%

Bachelor's or higher

29.5%

Median age

34.4

Average commute

28.1 min

Largest reported origins and ancestries: German Americans (606), Irish Americans (272), Mexican Americans (159).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for Spartanburg County. PPP loans are for Duncan.

Details

Unemployment rate

4.3%

Aug 2026, -0.6 pts in a year

Average annual pay

$62,161

157,484 jobs, 2025

Income per person

$55,886

BEA, 2024

Federal spending

$2.24B

FY 2026, $6,834 per person

Spartanburg County economyFederal spending

How people get to work

Duncan, SC, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone86.5%
  • Carpooled12.1%
  • Public transit0.0%
  • Walked0.0%
  • Bicycle0.0%
  • Taxi, ride-hailing, motorcycle or other0.0%
  • Worked from home1.4%

Average one-way commute: 28.1 minutes for people who do not work from home.

Environment and hazard risk

Duncan, SC, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: ice storm

Storm events since 1996

862

Countywide, mostly thunderstorm wind

Flood insurance policies

224

0.2% of homes, county

July high / Jan low

90° / 32°F

49.7 inches of rain a year

Hazards, floods and storm historyCheck a flood zone

Health statistics

Share of adults in Duncan, SC, CDC PLACES estimates

All 40 measures

Obesity

39.5%

U.S. 33.3% +6.2 pts

Diabetes

11.8%

U.S. 12.1% about the same

Smoking

14.5%

U.S. 12.8% +1.7 pts

Uninsured (18-64)

14.0%

U.S. 11.1% +2.9 pts

ZIP codes in Duncan

1 in or overlapping Duncan. Population shown

·

Cities near Duncan

NameDistanceLand area (sq mi)
LymanTown2 mi6.7
StartexCensus-designated place3.2 mi1.1
WellfordCity4.4 mi4.6
GreerCity4.7 mi23.5
ReidvilleTown4.8 mi1.8
FairforestCensus-designated place7.3 mi2.1
Inman MillsCensus-designated place7.8 mi1.1
InmanCity8.3 mi1.8
TaylorsCensus-designated place8.6 mi10.6
ArcadiaCensus-designated place8.7 mi2
Southern ShopsCensus-designated place9.1 mi3.6
Five ForksCensus-designated place9.9 mi7.6
SaxonCensus-designated place10 mi2.4
GramlingCensus-designated place10 mi1
RoebuckCensus-designated place11 mi4.3
HilltopCensus-designated place11 mi1.8

Frequently asked questions

What county is Duncan, SC in?
Duncan is in Spartanburg County, South Carolina.
What ZIP codes are in Duncan, SC?
ZIP codes in or overlapping Duncan include 29334.
What is the population of Duncan, SC?
About 4,310 people live in Duncan, based on American Community Survey 5-year estimates.
What cities are near Duncan?
Nearby places include Lyman (2 mi), Startex (3.2 mi), Wellford (4.4 mi), Greer (4.7 mi), Reidville (4.8 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023