Farm Service Agency Address: 211 Iowa Ave, Onawa, IA 51040 Phone: (712) 423-1311 Government Offices-Us Other Businesses: Nelson & Rock Contracting Inc at 23565 Highway K45, Onawa, IA 51040 Minnihan Law Firm at 906 9th St, Onawa, IA 51040 Jensen, Michael P at 710 Iowa Ave, Onawa, IA 51040 Alexander Farms Inc at 22417 260th St, Onawa, IA 51040