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Sen. Mike Rounds
U.S. Senator · U.S. Senate · Republican
Junior senator for South Dakota. Senate class 2.
In office since January 6, 2015. Current term ends January 3, 2027.
Phones
Washington office
U.S. Senate
716 Hart Senate Office Building
Washington, DC 20510
716 Hart Senate Office Building
Washington, DC 20510
Online
homepagerounds.senate.gov
contact formrounds.senate.gov/contact/email-mike
facebookfacebook.com/SenatorMikeRounds
instagraminstagram.com/senatorrounds
Congress does not publish email addresses. To write to this office, use its official contact form or website.
Committees and subcommittees
↳Subcommittee on Departments of Labor, Health and Human Services, and Education, and Related Agencies
↳Subcommittee on Agriculture, Rural Development, Food and Drug Administration, and Related Agencies
Local offices
Pierre111 W. Capitol Ave., Suite 210
Pierre, SD 57501
Phone 605-224-1450
Fax 605-224-1379
Pierre, SD 57501
Phone 605-224-1450
Fax 605-224-1379
Sioux Falls320 N. Main Ave., Suite A
Sioux Falls, SD 57104
Phone 605-336-0486
Fax 605-336-6624
Sioux Falls, SD 57104
Phone 605-336-0486
Fax 605-336-6624
Aberdeen221 Brown County Highway 19 S, Suite 112
Aberdeen, SD 57401
Phone 605-225-0366
Aberdeen, SD 57401
Phone 605-225-0366
Rapid City603 Omaha St., Suite 100
Rapid City, SD 57701
Phone 605-343-5035
Fax 605-343-5348
Rapid City, SD 57701
Phone 605-343-5035
Fax 605-343-5348
From My Contact Base
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Source: congress-legislators (public domain). Official portrait. Last checked October 28, 2026. Official website ↗