Mark Summerside

Corporate Relations Associate

Mark Summerside serves as NACo’s Corporate Relations Associate. In this role, he assists in coordinating the marketing activities of our partners and sponsors. Prior to NACo, Mark worked in higher education, managing federal internship and fellowships at the Department of Transportation and Naval Research Laboratories.

Mark grew up in Green Bay, Wis. and graduated from the University of Iowa.

Stronger Counties. Stronger America.

About NACo

The National Association of Counties (NACo) strengthens America’s counties, serving nearly 40,000 county elected officials and 3.6 million county employees.  Founded in 1935, NACo unites county officials to:

  • Advocate county priorities in federal policymaking
  • Promote exemplary county policies and practices
  • Nurture leadership skills and expand knowledge networks
  • Optimize county and taxpayer resources and cost savings, and
  • Enrich the public’s understanding of county government.


Strengthen America’s counties.


Healthy, safe and vibrant counties across America.