Mia Costello is a Republican serving in the Alaska House of Representatives, representing District 15. She assumed office on January 21, 2025, and her current term is scheduled to end on January 19, 2027. Costello won election in November 2024, succeeding Tom McKay, and now represents a district in Anchorage, Alaska.

Born on January 11, 1968, in Anchorage, Alaska, Mia Costello has spent much of her life dedicated to public service and education. She attended Harvard University, where she earned her bachelor’s degree in 1990, and later pursued graduate studies at the University of Alaska Southeast, completing her degree in 1997. Her academic background reflects a strong commitment to learning and leadership, qualities that have guided her throughout her career.

Before entering politics, Costello worked as a teacher and instructor, helping to shape the lives of young Alaskans. Her early career in education gave her a deep appreciation for the importance of schools, community engagement, and preparing future generations for success. This experience would later influence her legislative priorities, particularly in areas related to education and workforce development.

Costello’s political career began in the Alaska House of Representatives, where she first served from 2011 to 2015, representing District 27. During this period, she established herself as a thoughtful and hardworking legislator, focusing on issues such as education, economic growth, and responsible governance. In 2014, she successfully ran for the Alaska State Senate, representing District K. She served in the Senate from 2015 until 2023, where she held leadership positions, including Majority Leader in 2019. Her time in the Senate was marked by efforts to strengthen Alaska’s economy, support families, and ensure responsible use of state resources.

After leaving the Senate in 2023, Costello returned to the Alaska House of Representatives in 2025, representing District 15. Her return to the House reflects her continued dedication to serving the people of Anchorage and Alaska as a whole. As a legislator, she has prioritized issues such as education, energy, community development, and fiscal responsibility. She has also served on key committees, including those focused on commerce, environmental conservation, judiciary, and energy, where she has worked to shape policies that directly impact Alaskans’ daily lives.

Costello’s political philosophy is rooted in conservative values, emphasizing limited government, fiscal discipline, and community empowerment. She has consistently advocated for policies that support working families, reduce unnecessary regulations, and promote sustainable economic growth. Her leadership style is pragmatic and collaborative, often seeking solutions that balance the needs of her constituents with the broader interests of the state.

Beyond her legislative work, Mia Costello remains deeply connected to her community in Anchorage. She has built a career that combines education, leadership, and public service, and she continues to inspire others through her dedication to Alaska. Her journey from teacher to legislator, from the House to the Senate and back again, reflects a lifelong commitment to improving the lives of Alaskans and ensuring that the state remains strong and resilient.

Mia Costello’s story is one of perseverance, leadership, and service. Her career demonstrates how experience in education and local community engagement can translate into effective governance at the state level. As she continues her work in the Alaska House of Representatives, Costello remains focused on strengthening her district, supporting Alaska’s economy, and ensuring that the state remains a place where families and communities can thrive.