Former Rosemead Councilmember William Alarcon, a longtime civic leader and advocate for local residents, died Dec. 7, 2025, surrounded by family, city officials announced. He was 78.
Alarcon served the City of Rosemead for more than two decades across multiple roles, earning a reputation as a steady presence in local government and a thoughtful voice on growth, traffic, and neighborhood concerns. City leaders said his work helped shape Rosemead during periods of significant change.
“William Alarcon dedicated much of his life to public service, and his impact on Rosemead will be felt for generations,” the city said in a statement released Monday.
Long record of city service
Alarcon first joined the Rosemead City Council in 2003 and served until 2005. He returned to the council in 2011 and remained in office until retiring in 2018. During those years, he worked on issues ranging from infrastructure improvements to long-term planning aimed at balancing development with quality of life.
Before his council service, Alarcon was appointed to the Rosemead Traffic Commission and later the Rosemead Planning Commission. In those roles, he helped guide policies related to street safety, land use, and future development, according to city records. Colleagues said his familiarity with city operations made him an effective bridge between commissions and the council dais.
Education and community focus
A graduate of Don Bosco Technical Institute in Rosemead and the University of Southern California, Alarcon brought a strong technical and academic background to local government. City officials said his education informed his interest in practical solutions and innovation, particularly when addressing infrastructure and planning challenges.
Throughout his career, Alarcon emphasized accessibility and responsiveness to residents. He regularly attended community events and meetings, listening to concerns from homeowners and business owners alike. Former colleagues have described him as prepared, detail-oriented, and deeply invested in the city he served.
City expresses condolences
The City of Rosemead extended condolences to Alarcon’s family on behalf of the City Council and city staff. Flags at City Hall will be lowered in his honor later this week, according to city officials. Information about memorial services had not been released as of press time.
Residents seeking to learn more about Alarcon’s years of service can visit the city’s official website at https://www.cityofrosemead.org.
Alarcon is remembered as a public servant whose commitment and leadership helped guide Rosemead through years of growth while keeping community needs at the forefront.
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