Cost of living in Duncan, South Carolina

Duncan, South Carolina has about 4,310 people. That count is a 2020–2024 Census average, not a headcount from one day.

A typical home is worth about $211,400.

HUD's fair-market rent for a 2-bedroom in Spartanburg County is $1,196 a month. That is the county number, not an apartment listing in Duncan. It runs from October 2026 through September 2027.

In the Spartanburg, SC metro area, prices sit at 91.1 when the U.S. average is 100. That is a 2024 BEA index.

South Carolina taxes wages. A typical combined sales tax is 7.5% as of January 1, 2026. That mix is statewide, not Duncan's exact store tax.

In July 2026, a typical South Carolina home paid 15.47¢ per kilowatt-hour. That is a state average from EIA, not Duncan's bill.

EIA does not publish a South Carolina gasoline price. For the week of October 12, 2026, the Lower Atlantic (PADD 1C) all-grades price was $4.035 a gallon. At 12,000 miles a year and 25 mpg, the index counts that as $1,936.80 a year. Those miles are our standard, not a Census figure, and every town in South Carolina shares this price.

Among 246 places we list in South Carolina with a rent figure, 110 have higher typical rent than Duncan.