Union County is included in Spartanburg , SC Metropolitan Statistical Area , which is also included in the Greenville -- Spartanburg -- Anderson , SC combined statistical area . Union County is included in the Spartanburg , SC Metropolitan Statistical Area , which is also included in the Greenville -- Spartanburg -- Anderson , SC Combined Statistical Area . Spartanburg is included in the Metropolitan Statistical Area Greenville , which is also included in the Union County -- Spartanburg , SC -- Anderson , SC Combined Statistical Service .