Mason City Social Security Office

Social Security field office in Mason City, Iowa · Cerro Gordo County

Source: Social Security Administration field office list September 2026

Address and phone

(866) 365-6708office line

625 Village Green Dr SW, Mason City, IA 50401

(833) 515-0435fax

Get directions

Services you can do online at ssa.gov

National line: 1-800-772-1213 (TTY 1-800-325-0778), Mon–Fri 8 AM–7 PM local time.

Hours

Monday: 9:00 AM – 4:00 PM
Tuesday: 9:00 AM – 4:00 PM
Wednesday: 9:00 AM – 4:00 PM
Thursday: 9:00 AM – 4:00 PM
Friday: 9:00 AM – 4:00 PM
Saturday – Sunday: Closed

Closed on federal holidays. Many offices see visitors by appointment; call ahead before you go.

Where it is

County: Cerro Gordo County
Micro area: Mason City, IA
State: Iowa
ZIP code: 50401
SSA office code: 698

All offices in Iowa →

Other offices nearby

#	Office	Miles	Address	Phone	Hours
1	Austin, MNMower County	38.6	404 2nd St NWAustin, MN 55912	(866) 504-5010	Mon–Fri 9 AM–4 PM
2	Waterloo, IABlack Hawk County	63.4	3121 Greyhound DrWaterloo, IA 50701	(888) 456-9554	Mon–Fri 9 AM–4 PM
3	Fort Dodge, IAWebster County	64.1	2315 2nd Ave NFort Dodge, IA 50501	(866) 839-6193	Mon–Fri 9 AM–4 PM
4	Fairmont, MNMartin County	69.6	400 S. State St, Suite 70Fairmont, MN 56031	(877) 405-0414	Mon–Fri 9 AM–4 PM
5	Rochester, MNOlmsted County	72.1	206 Broadway Ave S, Suite 600Rochester, MN 55904	(877) 405-3631	Mon–Fri 9 AM–4 PM
6	Marshalltown, IAMarshall County	79.8	2502 S 2nd StMarshalltown, IA 50158	(877) 819-2595	Mon–Fri 9 AM–4 PM
7	Mankato, MNBlue Earth County	80	12 Civic Cntr Plaza, Ste 1550 Mankato PlMankato, MN 56001	(877) 457-1734	Mon–Fri 9 AM–4 PM
8	Ames, IAStory County	81.7	2615 University BlvdAmes, IA 50010	(866) 899-1928	Mon–Fri 9 AM–4 PM

Source: SSA field office list (public ArcGIS copy, Sep 2026). Hours and services can change; check ssa.gov or call the office before visiting. Distances are straight-line miles.