Colorado's 18th Senate district
Colorado's 18th Senate district is one of 35 districts in the Colorado Senate. As of January 8, 2025 it is represented by Judy Amabile. It was previously represented by Democrat Steve Fenberg, the former Senate President, since 2017.
Geography
District 18 is based in the city of Boulder, also covering the outlying Boulder County communities of Lyons, Nederland, Gunbarrel, and Niwot.The district is located almost entirely within Colorado's 2nd congressional district, with a small section extending into the 4th district. It overlaps with the 10th, 11th, 12th, and 13th districts of the Colorado House of Representatives.