Derby Insurance Services Share: Insurance Derby Insurance Services Visit Website 5529 Military Rd Sioux City, IA 51109-1399 (712) 233-2838 (712) 233-2710 (fax) About Map About Derby Insurance Agency, Inc. was founded in 1982 by Dan and Jeanne Derby in an effort to provide affordable insurance products and valuable customer service to the citizens of Siouxland. What's Nearby? Distance: 5 10 15 20 25 50 mi.