Duncan, SC Profile: Facts & Data


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Duncan, South Carolina - Basic Facts

The Town of Duncan had a population of 3,856 as of July 1, 2018. 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.

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

Jump to... (On This Page!)
  1. Duncan 2018 Demographic Data
  2. Growth Rates for Duncan (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. South Carolina Research Tools (Easy Tools & Current Data)
  3. South Carolina Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Duncan, SC Data & Demographics (As of July 1, 2018)


Total Population 3,856
Population in Households 3,855
Population in Familes 3,220
Population in Group Qrtrs 1
Population Density2 822
Diversity Index3 64


Median Household Income $34,405
Average Household Income $44,927
Per Capita Income $17,179


Total Housing Units 1,685 (100%)
Owner Occupied HU 774 (45.9%)
Renter Occupied HU 714 (42.4%)
Vacant Housing Units 197 (11.7%)
Median Home Value $111,790
Average Home Value $126,744


Total Households 1,488
Average Household Size 2.59
Family Households 1,034
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2018 2018-2023
Population 2.36% 1.97%
Households 2.27% 1.9%
Families 2.45% 1.74%
Median Household Income   3.41%
Per Capita Income   3.26%

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, 2018 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 # 118 70th
Population Density # 162 59th
Diversity Index # 32 92nd
Median Household Income # 286 28th
Per Capita Income # 335 16th

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

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