According to the ATF database, there are 8 registered FFLs in Millsboro, Delaware.
28547 DUPONT BLVDMILLSBORO, DE, 19966
240 MAIN STMILLSBORO, DE, 19966
29920 JOHN J WILLIAMS HWYMILLSBORO, DE, 19966
28381 DUPONT BLVDMILLSBORO, DE, 19966
38531 PARKER RDMILLSBORO, DE, 19966
18464 LAUREL RDMILLSBORO, DE, 19966
220 MAIN STREETMILLSBORO, DE, 19966
33827 LAWTON LANEMILLSBORO, DE, 19966