https://en.wikipedia.org/wiki/Rainbow_(disambiguation)#Places
Inhabited places
United States
Rainbow, Alabama
Rainbow, California
Rainbow, Placer County, California
Rainbow, Ohio
Rainbow, Oregon
Rainbow, Texas
Rainbow, Virginia
Other inhabited places
Rainbow, Victoria, Australia
Rainbow, Alberta, Canada
Natural formations
Rainbow Range (Chilcotin Plateau), British Columbia, Canada
Rainbow Range (Rocky Mountains), British Columbia and Alberta, Canada
Rainbow Springs, Florida, United States