Where to vote in Castle Rock, Colorado on November 3, 2026
- Election DayTue, Nov 3Tuesday, November 3
- Polls open7 a.m. – 7 p.m.Local time
- Election officeDouglas County303-660-7444
Find your polling place Election office Voting dates
Castle Rock is in Douglas County. Castle Rock has about 83,815 people, by the U.S. Census Bureau's 2025 estimate, which also gives its county lines.
Douglas County election office
Douglas County Clerk and Recorder
Office: 125 Stephanie Pl., Castle Rock, CO 80109
Phone: 303-660-7444
Website: douglas.co.us/elections
Check your registration and find your polling place at GoVoteColorado.gov, the state's voter site.
Colorado voting dates for Castle Rock voters
| Date | What |
|---|---|
| Fri, Oct 2 Started | Ballots start going out source |
| Mon, Oct 19 | Voter service centers open source |
| Mon, Oct 26 | Register and still get a mail ballot source |
| Tue, Nov 3, 7 p.m. | Election Day: polling centers open 7 a.m. to 7 p.m. source |
| Tue, Nov 3, 7 p.m. | Register and vote in person source |
| Tue, Nov 3, 7 p.m. | Return your ballot source |
Castle Rock voting questions
How do I vote in Castle Rock?
Colorado mails every registered voter a ballot. Return it by mail or to a ballot drop box. Enter your address on the Colorado page to find the nearest.
What is the phone number of the election office for Castle Rock?
303-660-7444, the Douglas County Clerk and Recorder, 125 Stephanie Pl., Castle Rock, CO 80109.
Which county runs elections in Castle Rock?
Douglas County. Castle Rock voters register and vote with Douglas County.
More for Castle Rock voters
- Colorado voting deadlines 2026: registration, mail ballots, early voting and Election Day.
- Douglas County election office: address and phone.
- Who is on the Colorado ballot, race by race.
- What's on my ballot and where do I vote, from your street address.
- Voting in every major U.S. city.
Other big cities in Colorado: Denver, Colorado Springs, Aurora, Fort Collins, Lakewood, Thornton, Arvada, Westminster, Greeley, Pueblo, Centennial, Boulder, Longmont.
Office details are from the Colorado Secretary of State, Roster of County Clerks and Recorders (checked October 14, 2026). Dates are Colorado's, each linked to its source. Call the office before you go; city population and county lines are from the U.S. Census Bureau.