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 ... Goes Virtual!

July 7-12, 2020

ScienceFest, which typically features a week of interactive activities, competitions, speakers, tours, and exhibits to engage the public in Science, Technology, Engineering, Art and Math (STEAM) topics, has gone virtual this year in light of COVID-19. You can still participate in some of your favorite ScienceFest activities, including Discovery Day (with science demos), just in a new online format in 2020!


Fair & Rodeo Parade

August 7-9, 2020

The Los Alamos County Fair and Rodeo is a 3-day event. Come downtown to enjoy the Arts & Crafts Fair and Rodeo Parade. The Cowboy Dinner & Dance takes place at the Posse Lodge and the Rodeo rides once again at the Brewer Arena, both on North Mesa. Register to participate here.



October 29-31, 2020

Halloweekend is typically anchored by Trick-or-Treat on MainStreet, a wildly popular event that turns Central Avenue into a ghoulish pedestrian area. Due to the current pandemic, however, we are changing things up this year. Check out our schedule for the latest COVID-safe activities! 


Holiday Lights Parade

December 4-6, 2020

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. Register to participate here.

Support the Community by Sponsoring an Event

Join our family of sponsors that are contributing to building the

community of Los Alamos.


Contact 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.

Copyright of Los Alamos Commerce and Development Corporation

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