Colorado

Eight regions on county lines: Denver metro, Northern Front Range, Colorado Springs, Central Mountains, Western Slope, San Luis Valley, Northeast Plains and Southeast Plains.

In the editor each region takes a level with one click. When one region needs more detail, split it into its counties and set them one by one; merge it back when they agree.

Regions in this starter map

• Denver metro6 countiesDenver County · Adams County · Arapahoe County · Jefferson County · Douglas County · Broomfield County
• Northern Front Range3 countiesBoulder County · Larimer County · Weld County
• Colorado Springs2 countiesEl Paso County · Teller County
• Central Mountains14 countiesSummit County · Eagle County · Grand County · Lake County · Park County · Chaffee County · Clear Creek County · Gilpin County · Jackson County · Routt County · Pitkin County · Gunnison County · Fremont County · Custer County
• Western Slope13 countiesArchuleta County · Delta County · Dolores County · Garfield County · La Plata County · Mesa County · Moffat County · Montezuma County · Montrose County · Ouray County · Rio Blanco County · San Juan County · San Miguel County
• San Luis Valley7 countiesAlamosa County · Conejos County · Costilla County · Hinsdale County · Mineral County · Rio Grande County · Saguache County
• Northeast Plains9 countiesMorgan County · Logan County · Elbert County · Lincoln County · Kit Carson County · Phillips County · Sedgwick County · Washington County · Yuma County
• Southeast Plains10 countiesBaca County · Bent County · Cheyenne County · Crowley County · Huerfano County · Kiowa County · Las Animas County · Otero County · Prowers County · Pueblo County

County lines from the Census Bureau, coastline from Natural Earth.