Doña Ana County

County Manager

Fernando R. Macias

County Manager
Department Head: 
Fernando R. Macias
845 N Motel Blvd
Las Cruces, New Mexico 88007
(575) 525-5802 (Office)
(575) 525-5812
(575) 525-5951
Phone: (575) 525-5802 (Office)
Fax: (575) 525-5812
TDD: (575) 525-5951

County Manager

Fernando R. Macias took the helm of Doña Ana County as county manager on January 8, 2018. He holds a bachelor’s degree in government and economics from New Mexico State University and a law degree from Georgetown University. As county manager, he said he will focus on budgetary issues, infrastructure, public safety and moving forward the policy initiatives of the Doña Ana County Board of Commissioners.

Macias previously served as county manager from 1997 to 2000, before taking the executive director position at the Juarez-based Border Environment Cooperation Commission. He is also a former Doña Ana County commissioner and commission chairman.

He was appointed to the Third Judicial District Court bench by former Gov. Bill Richardson in 2006 and earned retention from the voters in each subsequent election cycle.

As manager, Macias is the sole direct-report employee of the Doña Ana County Board of Commissioners and he oversees approximately 850 employees.


Assistant County Managers
Chuck McMahon
Assistant County Manager (Operations)
Chuck McMahon
Tel: (575) 525-6129
Fax: (575) 525-5812

A Doña Ana County employee since 2000, Chuck McMahon joined the organization as a planner. In 2004, he was promoted to Director of Community Development, and in 2009, he was named Deputy Assistant County Manager. He has been Assistant County Manager since 2012 and briefly served as Interim County Manager. He is a veteran of the U.S. Army.

As Assistant County Manager for Operations, McMahon oversees the following county departments:

  • Community Development
  • Engineering & Roads
  • Facilities & Parks
  • Fire & Emergency Services
  • Fleet Management
  • Jetport at Santa Teresa
  • Utilities
Robert J. Thompson
Assistant County Manager (Administration)
Robert J. Thompson
Tel: (575) 525-5919
Fax: (575) 525-5812

Robert Thompson has more than 20 years of leadership experience from the public and private sectors. Most recently, he served as the Compliance Officer and Associate Director for the Office of Unemployment Compensation at the Department of Employment Services in the District of Columbia. Thompson is a veteran of the United States Air Force.

As Assistant County Manager for Administration, Thompson oversees the following county departments:

  • Animal Control & Codes
  • Detention Center
  • Financial Services
  • Health & Human Services
  • Human Resources
  • Information Technology
  • Media & Public Communications