Colorado ski towns among priciest ZIP codes in U.S.

By the numbers: Aspen landed at No. 14 with a median home price of nearly $3.7 million, per RealtyHop's analysis.

• Snowmass and Telluride followed closely at No. 15 and No. 17, with medians of about $3.5 million and $3.4 million, respectively.

Follow the money: They're not the only Colorado ski towns with sky-high prices.

• In September, Breckenridge and Steamboat were named among the most expensive small towns in America with home prices rivaling some of the country's largest cities, a LendingTree analysis of U.S. Census Bureau data found.

Zoom out: The most expensive ZIP code among the 153 examined by RealtyHop was Atherton, California, with a median price of nearly $7.8 million.

• The least expensive was Benton County, Arkansas, where the price was about $408,000.

The fine print: RealtyHop's analysis reviewed more than 3 million property listings from January to mid-October across all 50 states and Washington, D.C.

The big picture: The country's most expensive places have one thing in common, according to RealtyHop's study. That's access to water — whether salty, fresh or frozen.