Of the communities listed in the article, Boulder is by far the largest (with a population just over 100,000.) The rest of the counties and small towns combine for a population of under 25,000.

These projects are going to have a very different profile in terms of cost and difficulty compared to the same project in a major metro area.

[Sources: wikipedia. Plus, my great grandparents homesteaded in Wray in the 1890s, and relatives in the area still host family reunions.]