Boulder is a home rule city in Boulder County, Colorado, United States, and its county seat. With a population of 108,250 at the 2020 census, it is the most populous city in the county and the 12th-most populous city in Colorado. It is the principal city of the Boulder metropolitan statistical area, which had 330,758 residents in 2020 and is part of the Front Range Urban Corridor.
AdDiscover the unique Boulder, Coloradoactivities designed to make your time unforgettable. Find the top-rated and best-reviewed tours and activitiesinBoulder, Colorado for 2025.
Site visitors: Over 1M in the past month
Top-rated things to do · Must-see attractions · Top attraction tickets
AdFind the Best Attractions inBoulder. Compare Prices and Book Online. Full Refund Available up to 24 Hours Before Your Tour Date. Quick & Easy Purchase Process.
Service catalog: Online Tour Booking, Read Traveller Reviews, Compare To…