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Homefacts City Report. Duncan is located in Spartanburg County, SC. The population is 3,173, making Duncan the 8th largest city in Spartanburg County. There are 7 public schools in Duncan with an average Homefacts rating of B+. The total crime rate for Duncan is low, and there are 17 registered sex offenders residing in the city.
Impact Fee Update Duncan Associates. Lake County, Florida 1 August 7, 2013. The consultant team of Duncan Associates and Littlejohn Engineering Associates was retained by. Lake County to provide engineering and planning analysis to determine the extent to which. development in the Countyâs South transportation impact benefit district would benefit from.