Which Colorado County Is "Most Rural"?

Hinsdale Co. Courthouse, Lake City, Colo. (Hinsale County)

This particular set of numbers is based on permanent population density, so a couple of tourist-heavy counties such as Pitkin County (Aspen) and Eagle County (Vail and its suburbs) make the list, along with places you would expect, such as Jackson and Cheyenne counties.

"The Most-Rural Counties in Colorado"

The winner, Hinsdale County, also has mostly summer residents, but its year-around population is the lowest.

I live in one of these counties, and our sheriff says the population triples in the summer. That probably is typical.

Now is it just me, or is the language changing? 

I keep hearing people say county names without the suffix "County" on them. Like, "I used to live in El Paso, but then I moved to Fremont." Or "I'm going to be up in Chaffee all day tomorrow."

Anyone else hearing this?