Duncan, SC Profile: Facts, Map & Data


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Duncan, South Carolina - Basic Facts

The Town of Duncan had a population of 3,455 as of July 1, 2016. Duncan ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in South Carolina. See peer rankings below.

The primary coordinate point for Duncan is located at latitude 34.9375 and longitude -82.141 in Spartanburg County. The formal boundaries for the Town of Duncan (see map below) encompass a land area of 4.69 sq. miles and a water area of 0.1 sq. miles. Spartanburg County is in the Eastern time zone (GMT -5). The elevation is 863 feet.

The Town of Duncan (GNIS ID: 2406404) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

South Carolina is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Town of Duncan is located within Wellford Division of Spartanburg County.

Beneath the boundary map are tables with Duncan population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Duncan: Duncans Cross Roads, Vernonsville.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


Town of Duncan, SC Boundary Map

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Boundary Maps: Wellford Division | Spartanburg County | South Carolina Counties

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Duncan, SC Data & Demographics (As of July 1, 2016)


Total Population 3,455
Population in Households 3,454
Population in Familes 2,878
Population in Group Qrtrs 1
Population Density1 736
Diversity Index2 64


Total Households 1,329
Average Household Size 2.6
Family Households 928
Average Family Size 3


Total Housing Units 1,503 (100%)
Owner Occupied HU 724 (48.2%)
Renter Occupied HU 605 (40.3%)
Vacant Housing Units 174 (11.6%)
Median Home Value $102,294
Average Home Value $116,229


Median Household Income $31,035
Average Household Income $41,668
Per Capita Income $15,890
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.33% 1.27%
Households 1.17% 1.18%
Families 1.47% 1.06%
Median Household Income   -1.49%
Per Capita Income   0.3%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Duncan, SC - Peer Comparisons by Rank and Percentile

The table below compares Duncan to the other 396 incorporated cities, towns and CDPs in South Carolina by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 124 69th
Population Density1 # 177 56th
Diversity Index2 # 30 93rd
Median Household Income # 294 26th
Per Capita Income # 342 14th

Additional comparisons and rankings can be made with a VERY EASY TO USE South Carolina Census Data Comparison Tool.

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