Nearby city: Denver
Population: 42,100
Median family income: $87,951
Runner-up: Security-Widefield

For families, one of the draws of Littleton is its school system, which was recently recognized as one of the best in Colorado, according to 9news.com. Littleton residents also have access to public transportation to Denver, about 10 miles away, via light rail. Littleton has a historic district and museums and is home to South Platte Park, one of the largest suburban parks, at 659 acres, in the U.S., according to Littleton's website.

Note: Columbine High School shares a Zip Code with Littleton but is in nearby Columbine, which is a separate Census designated place.