Government All Locations... DowntownThe Avenues of Ingersoll & Grand go Results Found: 6 Button group with nested dropdown US Small Business Administration US Small Business Administration 210 Walnut Street Des Moines IA 50309 (515) 284-4422 Terrace Hill Terrace Hill Iowa Governor's Residence and National Historic Landmark Iowa Governor's Residence and National Historic Landmark 2300 Grand Ave Des Moines IA 50312 (515) 281-7205 Polk County Board of Supervisors 111 Court Ave. Room 300 Des Moines IA 50309 (515) 286-3121 Iowa Workforce Development Iowa Workforce Development 200 Army Post Rd Suite 44 Des Moines IA 50315 (515) 218-0665 City of Des Moines - Office of Economic Development 400 Robert D Ray Dr Des Moines IA 50309 (515) 283-4004 City of Des Moines City of Des Moines 400 Robert D. Ray Drive Des Moines IA 50312 (515) 283-4209