Visit the Boulder County Ballot Measures website for information about 2025 ballot measures.

Share your feedback on Boulder County’s website by Friday, Oct. 3. Take the website survey.

Hikes & Events

Beautiful Butterflies of Boulder County

Ron Stewart Parks & Open Space Building 5201 St Vrain Rd, Longmont, CO

Hammering On the Farm

Agricultural Heritage Center 8348 Ute Hwy, Longmont, CO

Catfish Night

Carolyn Holmberg Preserve at Rock Creek Farm 2100 S. 104th St., Broomfield, CO

Astronomy: Aurora Borealis

Ron Stewart Preserve at Rabbit Mountain 14950 N. 55th St., Longmont, CO

Gold Panning

Nederland Mining Museum 200 N. Bridge Street, Nederland, CO

Middle Boulder Creek Fuels Reduction Partnership Project Community Meeting

Nederland Community Center 750 Highway 72 North, Nederland, CO, United States

Sharing Our Backyards with Bobcats

Louisville Public Library 951 Spruce Street, Louisville, CO

Fun on the Farm: Wiggle Worms

Agricultural Heritage Center 8348 Ute Hwy, Longmont, CO

CANCELED: Hammering On the Farm

Agricultural Heritage Center 8348 Ute Hwy, Longmont, CO

Small Engine Day

Nederland Mining Museum 200 N. Bridge Street, Nederland, CO

Altona School Open House

Altona Schoolhouse

Restoring the Prairie: Conservation and Habitat Part 2

Agricultural Heritage Center 8348 Ute Hwy, Longmont, CO