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More People Downtown, More of the Time

Los Alamos MainStreet hosts several major community events in downtown Los Alamos. We believe that community-building events lead to better quality of life for the entire community. All events are FREE to the public.


Los Alamos ScienceFest+ 

July 6-11, 2021

ScienceFest features a week of interactive activities, competitions, speakers, tours, and exhibits to engage the public in Science, Technology, Engineering, Art and Math (STEAM) topics. In 2021 there will be even more channels in which to safely participate in engaging science events!


Fair & Rodeo Parade

August 13-15, 2021

The Los Alamos County Fair and Rodeo is a 3-day event. The public is encouraged to come downtown to enjoy the Arts & Crafts Fair and Rodeo Parade. The Cowboy Dinner & Dance takes place at the Posse Lodge and the Rodeo at the Brewer Arena, both on North Mesa. The 2021 Rodeo theme is "On the Road Again"!



October 29-31, 2021

Halloweekend is typically anchored by Trick-or-Treat on MainStreet, a wildly popular event that turns Central Avenue into a ghoulish pedestrian area!


Holiday Lights Parade

December 3-5, 2021

WinterFest Weekend celebrates winter in Los Alamos. A host of businesses and organizations schedule events including ballets, bazaars, shows, and sales. The weekend is highlighted by the Holiday Lights Parade and the lighting of the tree at Ashley Pond. 

Support the Community by Sponsoring an Event

Join our family of sponsors that are contributing to building the

community of Los Alamos.


Contact lauren@losalamos.org or

call 505-661-4844

for a current Sponsorship Packet.


Los Alamos MainStreet is a volunteer driven organization. Following the best practices as established by the National Trust for Historic Preservation, we have standing committees that implement all our projects. We invite you to join our volunteer corps, a wonderful group of individuals, students and 

community leaders. Meet new friends, try out new skills and have fun as you help support the MainStreet District. Opportunities range from volunteering for specific events to joining one of our Creative District committees.