20. Westport, Connecticut
Average Listing Price: $923,422
State Average: $423,117
Westport, on the Long Island Sound, has a reputation for its excellent school system and is know for its proximity to New York City.
It was the 24th most expensive housing market in 2013.
19. Greenwich, Connecticut
Average Listing Price: $923,690
State Average: $423,117
Affluent Greenwich, also on the Long Island Sound, is one of the wealthiest towns in America. Residents include Paul Tudor Jones, Ray Dalio, and Sandy Weill.
It was the 15th most expensive housing market in 2013.
18. Cohasset, Massachusetts
Average Listing Price: $923,889
State Average: $577,080
Cohasset, outside of Boston, is on the corner of the South Shore and has several beaches and a yacht club.
It was not one of the 25 most expensive housing markets in 2013.
17. Morgan Hill, California
Average Listing Price: $932,959
State Average: $497,778
Morgan Hill is in Santa Clara County, in the southernmost part of Silicon Valley. It's a popular commuter town for people who work in the tech industry.
It was not one of the 25 most expensive housing markets in 2013.
16. Winnetka, Illinois
Average Listing Price: $933,182
State Average: $302,061
Winnetka, on the North Shore outside Chicago, is an affluent suburban town known for its excellent schools.
It was not one of the 25 most expensive housing markets in 2013.
15. Orono/Medina, Minnesota
Average Listing Price: $995,244
State Average: $419,310
Orono is a wealthy city on the northern shores of Lake Minnetonka. Combined with nearby Medina, it has a population of just over 12,000.
It was the 8th most expensive housing market in 2013.
14. Stevensville, Maryland
Average Listing Price: $1.01 million
State Average: $383,071
Stevensville is one of the only designated historic districts in the US, with more than 100 historic structures dating back to its early days as a steamboat terminal.
It was not one of the 25 most expensive housing markets in 2013.
13. Irvine, California
Average Listing Price: $1.01 million
State Average: $497,778
Irvine is known for its excellent public schools, and is home to UC-Irvine and a number of tech companies including Broadcom and Vizio.
It was not one of the 25 most expensive housing markets in 2013.
12. Mercer Island, Washington
Average Listing Price: $1.01 million
State Average: $398,527
Mercer Island is located in Lake Washington near Seattle, and is connected to the mainland via two bridges.
It was the 21st most expensive housing market in 2013.
11. Santa Barbara, California
Average Listing Price: $1.04 million
State Average: $497,778
Santa Barbara lies between the Santa Ynez Mountains and the Pacific Ocean, earning it the nickname of the "American Riviera".
It was the 18th most expensive housing market in 2013.
10. Wellesley, Massachusetts
Average Listing Price: $1.09 million
State Average: $577,080
The historic town of Wellesley is home to both Wellesley College and Babson College. It has a highly educated population, as well as excellent schools.
It was the 16th most expensive housing market in 2013.
9. San Mateo, California
Average Listing Price: $1.09 million
State Average: $497,778
San Mateo is in the heart of Silicon Valley, and is a popular bedroom community thanks to its proximity to both San Jose and San Francisco.
It was the 12th most expensive housing market in 2013.
8. Moraga, California
Average Listing Price: $1.13 million
State Average: $497,778
The affluent town of Moraga is in the San Francisco Bay Area, and is considered to be one of America's most dog-friendly towns.
It was not one of the 25 most expensive housing markets in 2013.
7. Sunnyvale, California
Average Listing Price: $1.27 million
State Average: $497,778
Sunnyvale is a major Silicon Valley hub. Tech companies including Juniper Networks, Fortinet, and Yahoo! are headquartered there.
It was the 17th most expensive housing market in 2013.
6. San Francisco, California
Average Listing Price: $1.29 million
State Average: $497,778
Thanks to the booming tech industry, San Francisco has become one of America's most expensive places to live.
It was the 5th most expensive housing market in 2013.
5. Los Gatos, California
Average Listing Price: $1.31 million
State Average: $497,778
Los Gatos, also in the San Francisco Bay Area, is home to Netflix.
It was the 4th most expensive housing market in 2013.
4. Redwood City, California
Average Listing Price: $1.43 million
State Average: $497,778
Redwood City sits between San Francisco and San Jose. It is home to technology giants like Oracle and Electronic Arts.
It was the 10th most expensive housing market in 2013.
3. Saratoga, California
Average Listing Price: $1.87 million
State Average: $497,778
Saratoga, on the western edge of Silicon Valley, is known for its wineries and boutique shopping.
It was the 3rd most expensive housing market in 2013.
2. Newport Beach, California
Average Listing Price: $1.90 million
State Average: $497,778
Newport Beach, outside of Santa Ana, consistently ranks as one of the wealthiest communities in the US.
It was the 2nd most expensive housing market in 2013.
1. Los Altos, California
Average Listing Price: $1.96 million
State Average: $497,778
Los Altos, a wealthy enclave in the San Francisco Bay Area, is known for its excellent private and public schools. It's home to Google founder Sergey Brin.
It was not one of the 25 most expensive housing markets in 2013.