Adams County buildings - including the Government Center, Human Services Center, and Motor Vehicle locations - are now open Tuesday-Friday, 7 a.m.- 5:30 p.m. Some departments are open by appointment only. Find modified office hours here.

Commercial Exhibitors

For 2020 refund information please contact Ryan.

Below are links to some of our vendor websites.

Universal Windows Denver

Bordner Home Install

Steel Structures of America

Heathers Happy Faces Face Painting

Expressions Leather


We will see you on the Midway in 2021!

Founded in 1904, the Adams County Fair is one of the metro-Denver region’s top annual agricultural events. Having just celebrated its 115th anniversary, the 2019 fair attracted 86,000 attendees, making it the largest county fair in Colorado. From headline entertainment stages, to bull riding events, to Dia de la Familia, the fair provides a large variety of venues and features for potential vendors.

The Adams County Fair serves the communities of Federal Heights, Westminster, Thornton, Brighton, Northglenn, Arvada, Aurora, and Commerce City.