Pitkin County has long had a reputation as the state’s most expensive housing market, but the number of ZIP codes in Colorado where the median list price is above the million-dollar mark now numbers 20, according to a study by the real estate portal RealtyHop. Aspen’s 81611 remains the most exclusive housing market in the state, with a median list price this year of $3.67 million. It is where Colorado joined the elite $100 million-plus home sale club with the purchase of 419 Willoughby Way for a state record of $108 million in April. Not too far behind is 81654 in Snowmass, where the median list price is $3.49 million, and claiming the third spot is Telluride’s 81435, where the median list price is at $3.39 million. RealtyHop looked at home listings in every state through October of this year to determine which ZIP codes had the highest median list price in each state. The median is the midway point, or where half the listings are priced higher and half are lower. List prices aren’t the same as the final sales price, although the two tend to track each other. Of Colorado’s 642 ZIP codes, ski resort areas dominate the most expensive home price list, with Vail’s 81657 having a median list price of $1.97 million, while Aspen’s neighbor, Snowmass Village, 81615, has a median list price of $1.93 million. Just north of the Aspen and Snowmass area is 81623, which has a median list price of $1.89 million. It includes once more affordable towns like Marble, Redstone and Carbondale. The Aspen wealth effect also has spilled over into 81621, which includes Basalt and El Jebel, where the median list price is $1.83 million. Likewise, the 81632 ZIP, which includes Avon, Wolcott and Edwards to the west of Vail makes the top 20 with a median list price of $1.82 million. Other ski resort communities in the top 20 are Summit County’s 80424, home to Blue River, Breckenridge, Frisco and Keystone at $1.72 million; Steamboat Springs’ 80487 at $1.69 million, and Crested Butte’s 81224 at $1.35 million. Three Boulder County ZIPs are on the list, led by Boulder’s 80304 at $1.42 million, the mountain towns to the west of Boulder in 80302 at $1.34 million and south Boulder’s 80305 at $1.15 million. Two other Front Range ZIPs made the list. They include 80116 in Castle Rock, Franktown and The Pinery in Elbert and Douglas counties, where the median list price came in at $1.31 million, and the 80135 ZIP in Sedalia and the surrounding areas with a median list price of $1.19 million. Related Articles Real Estate | Denver housing market: Cautious optimism for 2025 despite challenges Real Estate | Louisville real estate firm buys Tech Center tower for $20 million Real Estate | Developer sues Lakewood over rule change it fears could sink apartment project near Belmar Park Real Estate | Seismic real estate commission settlement has barely registered in Colorado Real Estate | End of Jefferson Parkway dispute could breathe new life into beleaguered highway proposal If access to mountains and ski resorts helped define the most expensive housing markets in Colorado, beach-front properties near major cities defined the nation’s most expensive housing markets. The nation’s most expensive ZIP code, for the fifth year in a row, is 94027, in Atherton, Calif., where the median list price is $7.75 million, according to RealtyHop. The Silicon Valley enclave in San Mateo County only allows only one home per acre and has a population of around 7,000 people. Up next is 33109, home to Fisher Island in Florida’s Miami-Dade County. The median list price is $6.1 million in the exclusive enclave south of South Beach on a barrier reef island. The third most expensive ZIP, according to RealtyHop, is 11962 in Suffolk County, N.Y. Sagaponack is part of the East Hamptons and represents old money with a median list price is $5.99 million.