The most expensive ZIP codes in the country are in California and New York, according to America’s most expensive ZIP codes rankings by PropertyShark. To find the priciest enclaves, PropertyShark analyzed all real estate transactions—condominiums, single- and two-family homes, as well as coops—that were completed in 2018, excluding package deals.

Not surprisingly, New York City and San Francisco were the two cities with the most ZIP codes in the ranking. Just across the Long Island Sound, Connecticut had its share of pricey neighborhoods, with four ZIP codes making the top 100 list—the most expensive being Riverside (06878). The city snagged the 70th spot. Connecticut's Old Greenwich (06870) and Greenwich (06830) also made the site's top 100.

Key Takeaways

  • Three Connecticut cities ranked among the top 100 list of most expensive ZIP codes in the country.
  • Riverside was the highest in the 70th spot with a median home price of $1.63 million.
  • Old Greenwich, and Greenwich's 06830 also made the top 100.
  • Other most expensive ZIP codes in Connecticut are Darien, New Canaan, and Norwalk.
  • Westport, Greenwich's 06831, and Southport rounded out the top 10 most expensive ZIP codes in Connecticut.

What $1.855 Million Buys You in Riverside

The median home price in Greenwich is $1.52 million, which could be considered a relative bargain for the area. At that price, buyers can expect homes of about 3,000 square feet, with four bedrooms and three baths baths, fireplaces, gourmet kitchens, French doors, pools and plenty of outdoor space with great landscaping.

As of April 30, 2020, the most expensive home on the market in Riverside is a waterfront mansion priced at $26.75 million, complete with six bedrooms and eight baths, and almost 11,400 square feet of living space.

Connecticut’s Priciest ZIP Codes

In addition to Riverside, the state is well represented on the list of America’s most expensive ZIP codes list for 2018. Here are Connecticut’s 10 most-expensive ZIP code areas—from highest to lowest—along with the towns in which you will find them, the median home price from Zillow, and the median household income from the Environmental Systems Research Institute (ESRI), which develops GIS and mapping software for organizations in commercial, government, natural resources, and utilities industries.

1. 06878: Riverside

  • Median Home Price: $1.63 million
  • Median Household Income: $184,135

2. 06870: Old Greenwich

Old Greenwich is considered to be one of the nation's richest communities, with a rather small population of about 6,600. The median home price in this town was $1.625 million, and the median household income was reported at $200,001. 

3. 06830: Greenwich

Fairfield County's Greenwich ranked third on the list, with a median home price of $1.45 million. According to the latest data, the town had about 61,000 residents. Greenwich is home to many hedge funds and financial services companies. The average household income in this city was $116,297.

4. 06807: Cos Cob

Recently, Cos Cob has seen a decline in its real estate values, down almost 5% over the last year alone, with its median home value reported to be $970,300. Its median household income sits at $155,402. 

Old Greenwich, Darien, and New Canaan reported the highest median household income of $200,001.

5. 06820: Darien

Not far from New York City, Darien is a small town on Connecticut's Gold Coast. The town reported a media home price of $1.296 million, with a median household income of $200,001. 

6. 06840: New Canaan

Roughly 20,000 people call New Canaan home, and is roughly an hour-long train ride away from Manhattan. New Canaan is bordered by Darien, Stamford, and Norwalk among others. The town had a median home price of $1.17 million. The median household income was $200,001.

7. 06853: Norwalk

Norwalk is one of the state's most populated cities with around 85,000 residents. Reports indicated the city's median home price was $877,000, with the median household income of $159,696. 

8. 06880: Westport

Westport, with about 27,000 residents boasts a median home price of just over of the million-dollar mark, with a median household income of $177,614. 

9. 06831: Greenwich

This ZIP code in Greenwich boasts a median home price of $1.21 million, with a sizeable median household income of $148,702. 

10. 06890: Southport

Southport reported a median home price of $787,031. Its median household income was reported to be $173,112.

The Bottom Line

Connecticut’s most expensive ZIP codes are all part of Fairfield County on the Gold Coast, and are an easy commute to the New York City area. Many people who work in New York City live in Connecticut, where they’ll get a lot more house for their money. For $1.42 million in Riverside, you can get into a home that is a few thousand square feet with several bedrooms on a couple of acres. At that price in Manhattan, you’ll probably be looking at a modest two-bedroom condo. And Connecticut offers plenty of green space to enjoy the outdoors and get away from the city.