Us Secret Service 230 S Phillips Ave # 405 Sioux Falls, SD 57104 Phone : (605) 330-4565 Business Category Police Protection Federal Secret Service--sioux Falls Resident Office Sioux Falls, SD 57103 Phone : (605) 330-4565 Secret Service--sioux Falls Resident Office Business Category Government Offices-Federal Government Offices & Public Schools United States Government--law Enforcement, Secret Service Field Office Sioux Falls, SD 57103 Phone : (605) 330-4565 Business Category Government Offices-Federal Police Departments Government Offices & Public Schools United States Government--secret Service, Local Field Office 230 S Phillips Ave Ste 405 Sioux Falls, SD 57104 Phone : (605) 330-4565 United States Government--secret Service, Local Field Office Business Category Government Offices-Federal Government Offices & Public Schools