GSA Celebrates Strongest Membership Growth in Decades
Boulder, Colo., USA: The Geological Society of America (GSA) closed 2025 with its strongest membership performance in decades, marking a decisive reversal of membership declines and signaling renewed confidence in the Society’s mission, value, and momentum in the geosciences overall. In 2025, GSA achieved an 8.4% net increase in membership, adding almost 5,000 new members and restoring annual retention to 82%, a level not seen since the early 2010s. The results represent a significant swing from prior years and reflect the success of a deliberate strategy focused on both growth and sustained engagement.
“Our momentum was fueled by a balanced approach that welcomed new members while re-engaging existing ones, advanced scientific excellence while making science more accessible to the public, and strengthened professional development and career pathways across all career stages,” said GSA’s Executive Director and CEO, Melanie Brandt, who also credited the efforts of GSA’s scientific partners.
“We are also benefiting from the broader efforts of organizations such as the Geological Society of London’s This Is Geoscience campaign, the advocacy leadership of the American Geophysical Union (AGU), and the talent-pipeline work of the American Geosciences Institute (AGI). Together, these collective efforts are strengthening the geoscience community as a whole and positioning GSA for continued growth in 2026 and beyond.”
Scientific conferences remained central to GSA’s impact. Across its 2025 meetings, the Society delivered robust technical programs, dynamic keynote symposia, and high levels of participation, reinforcing GSA’s role as a premier forum for sharing cutting-edge geoscience research and fostering collaboration across disciplines and career stages.
Field-based learning also played a defining role in 2025. GSA expanded opportunities for hands-on scientific exchange through immersive experiences such as the Thompson Field Forum in Cuba, which brought geoscientists together in an international setting to deepen understanding, build connections, and engage directly with Earth systems in the field.
GSA further advanced its mission of service to society by strengthening the voice of geoscience in policy. In 2025, the Society adopted a new Position Statement on the Benefits of Professional Geologist Licensure, underscoring the critical role of licensed geologists in protecting public health, safety, and the environment and reaffirming GSA’s support for strong professional standards.
Together, these accomplishments reflect a revitalized and globally connected geoscience community. As GSA looks ahead to 2026—with international meetings planned and a return to Denver for its flagship event, GSA Connects—the Society is poised to build on this momentum and continue advancing geoscience through research, education, and collaboration.
About the Geological Society of America
The Geological Society of America (GSA) is a global professional society with more than 18,000 members across over 100 countries. As a leading voice for the geosciences, GSA advances the understanding of Earth's dynamic processes and fosters collaboration among scientists, educators, and policymakers. GSA publishes Geology, the top-ranked “geology” journal, along with a diverse portfolio of scholarly journals, books, and conference proceedings—several of which rank among Amazon’s top 100 best-selling geology titles.
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