Jefferson County
Extension

Jefferson County Extension improves residents by delivering unbiased, research-based programs that support healthy land stewardship, empower youth, and strengthen community engagement.

Welcome to Jefferson County Extension

We’re glad you’re here. Questions? Need help?

Front doors of the CSU Extension offices, framed with a flower growing in the garden. Linked to link to Jeffco Parks and Open Space website.

A program in partnership of CSU and Jeffco Parks and Open Space.

Announcement

Wildfire Season

It’s wildfire season here in Colorado. Find information and resources on preparation, planning and recovery on the CSU Extension website.

Emergency Planning & Recovery Resources

Announcement

Got Garden Questions?

The Colorado Master Gardener (CMG) program helps Coloradans grow thriving landscapes while strengthening local communities. Jeffco Master Gardeners volunteer year-round at our local helpdesk to answer community questions.

Learn more

Announcement

Sign Up For Our Newsletter

Jefferson County Extension offers hundreds of events, workshops, and opportunities each year for the whole family. CSU Extension is your go-to for natural resources, gardening, horticulture, 4-H youth development, and health and wellbeing. Follow us on Facebook or Instagram @csuextensionjeffco and join our quarterly ExPress newsletter.

Announcement

Pay Fees Online

Jefferson County Extension accepts online payments. View the Pay Online page and click the appropriate link to pay for your enrollment, program, or service. Online payments are fast, secure, and available anytime for your convenience.

Pay Online

Featured Programs

From local 4-H clubs to neighborhood training events, Jefferson County Extension supports individuals and communities with programming, services, and educational outreach.