Home to over 560,000 residents, thousands of businesses and a yearly budget of approximately $580,000,000 Jefferson County is a great place to Live, Work, Play, and Learn. Elected for his first term as Jefferson County Commissioner during the “Great Recession”, Donald showed his professionalism leading the county through very difficult financial times while streamlining and improving core county services. Donald continued his commitment to the residents, businesses, and visitors of Jefferson County throughout his first term and then through his second term as County Commissioner. The County Commissioners act as the governing body of the county, and are elected at large to four-year terms and enact policies such as the establishment of the property tax rate and the adoption of the budget. They are also responsible for adopting ordinances or local laws that affect citizens living in the unincorporated areas of the county
He was elected Jefferson County Commissioner (District 3) in November 2010 and won re-election to another four-year term in November 2014.
While commissioner he served on numerous boards and commissions including the following:
- Boundary Control Commission
- Colorado Counties, Inc. Legislative Committee
- C-470 Corridor Coalition board member
- Denver Regional Council of Governments (DRCOG) board member
- DRCOG Administrative and Executive Board member
- Jefferson County Economic Development Corporation Executive Committee
- Jefferson County Economic Development Corporation Board
- Jefferson Parkway Public Highway Authority Board – Chairman
- Noxious Weed Advisory Board
- Criminal Justice Coordinating Committee
- Jefferson County Transportation Action and Advocacy Group (JEFFTAAG) – Chairman
- I-70 Mountain Coalition
Chairman of the Land Use and Natural Resource Steering Committee – Colorado Counties Inc.
- DRCOG Metro Vision Issues Committee
- Chairman of the WestConnect Transportation Planning Committee
Rosier is past chair of the Metro Area County Commissioners (MACC) group of Colorado Counties, Inc. (CCI), and is past president of the CCI Front Range District. He chaired CCI’s Land Use and Natural Resource Steering Committee for over four years. In 2011, Rosier was named CCI’s Freshman Commissioner of the Year. CCI represents boards of county commissioners from more than 60 Colorado counties.
Rosier also served on the National Association of Counties (NACo) Transportation Steering Committee, which develops NACo policies and represents counties before Congress. In 2012, he was chosen to participate in a national leadership institute developed by NACo and the Cambridge Leadership Associates. He also served as President of the National Conference of Republican County Officials (“NCRCO”)
A graduate of Colorado State University with a bachelor’s degree in civil engineering, with an emphasis on water resources, Rosier has worked in the consulting engineering field, the public engineering sector, the land development and construction field, and he has worked in energy development and exploration.
Paid for by Rosier for HD25