Jonathan Wilton Lines is a respected business owner, public servant, and community leader dedicated to the prosperity, security, and heritage of Yuma County and the State of Arizona.

As a Yuma County Supervisor, Jonathan has championed policies and projects that strengthen infrastructure, enhance public safety, and promote economic growth. He played a key role in securing funding for transformative initiatives such as the regional Law Enforcement Training Academy, Yuma County Fairgrounds improvements, and critical water infrastructure projects—ensuring the region is prepared for future challenges while honoring its deep agricultural and military roots. 

Jonathan currently serves as Chairman of the Arizona Water Infrastructure and Finance Authority (WIFA), overseeing investments in water resources essential to Arizona’s long-term growth, sustainability, and resilience. He is also Chairman of the Board for Amberly’s Place, the region’s only family advocacy center for victims of abuse, and serves on the Board of the Yuma Community Food Bank, working to combat hunger and strengthen local support systems. Jonathan is a current Board Member and past Chairman of Arizona Fairs and Expositions, supporting the state’s fairgrounds and agricultural exhibition network. He also previously served as Chairman of the Arizona Republican Party.

His leadership extends to the national conversation on border security as Chairman of the Board for the Border Security Alliance, as well as his service on the boards of the Greater Yuma Economic Development Corporation and the Arizona/Mexico Commission, where he promotes trade, investment, and cross-border cooperation.

In business, Jonathan is the sole owner and General Manager of Lines & Lundgreen LLC, a premier roofing and insulation company serving residential and commercial clients across Yuma County. Under his leadership, the company has earned a reputation for quality workmanship, integrity, and strong community engagement. 

A lifelong advocate for service and mentorship, Jonathan has been deeply involved in organizations such as the Boy Scouts of America, reflecting his commitment to developing future leaders and giving back to the community. His advocacy is rooted in a deep respect for Yuma’s agricultural heart, its patriotic spirit, and its strategic role in the nation’s security and food supply. 

Jonathan and his wife, Rosalie, a successful REALTOR® with EXP Realty, are proud to call Yuma home. Together, they are raising their family with a commitment to faith, hard work, and service to others.