RELEASED ON February 17, 2026
Top 25 Most Expensive Connecticut Zip Codes in 2025: Leading Greenwich Zip Nears $3M
Eliza Theiss | 5 minute read
Connecticut’s priciest zips were again concentrated in Fairfield County, with Greenwich anchoring the state’s ranking and tying with Los Angeles for the title of second-most expensive city in the U.S. On top of that, seven Connecticut locations landed among the national top 100, setting a new record for the state’s luxury real estate market.
Key Takeaways
- Greenwich grabbed four of the five most expensive zip codes in the state, led by 06878 at $2.75 million and 06870 at $2.65 million
- Seven Connecticut zip codes placed in the national top 100, with 06878 in Greenwich the highest-ranking at #43
- Fairfield County supplied 20 of the state’s 25 priciest zips, joined by Litchfield County with three entries
- 15 Connecticut zip codes reached median sale prices of $1 million and over.
Connecticut’s luxury market in 2025 was strongly anchored by Greenwich, which supplied four of the state’s five most expensive zip codes, meaning the entirety of Greenwich is now covered by some of the most expensive real estate in the country. In fact, seven Connecticut zip codes placed among the national top 100, a new record high for the state.
This marked the first time that the state surpassed Massachusetts’ presence in the national top 100. All seven nationally ranked zips were Fairfield County locations, as were a total of 20 zip codes among the state’s 25 most expensive. Litchfield County contributed three entries, joined by Middlesex and Litchfield counties with one waterfront zip code each.
Overall, Connecticut’s top 25 most expensive zip codes ranged from $700,000 in Stamford’s 06907 to $2.75 million in Greenwich zip 06878, with 15 locations surpassing the $1 million mark. In fact, the state’s top 10 bottoming out at $1.38 million with Southport’s 06890 zip.
See how each community stacks up and what reinforced local pricing peaks:
Top 10 Most Expensive Zip Codes in Connecticut in 2025
#1. Greenwich 06878, Fairfield County
Median Sale Price: $2,753,000
Greenwich’s 06878 ranked first statewide in 2025, while also placing #43 nationally. Covering the town’s most upscale and prominent neighborhood, it was one of four Greenwich zip codes in Connecticut’s top 25 and the national top 100 as the entirety of Greenwich is now covered by some of the most exclusive zip codes in the U.S., with all four surpassing $2 million.
In fact, Greenwich’s strong performance in 2025 elevated even further in the national spotlight, tying with Los Angeles for the title of second most expensive city in the U.S., surpassed only by Newport Beach with five nationally ranked zips.
#2. Greenwich 06870, Fairfield County
Median Sale Price: $2,650,000
Greenwich’s 06870 posted the second highest median in the state while also ranking nationally at #50. With just $103,000 separating the first two entries, this minimal price gap reflects tight clustering at the very top. Covering the Old Greenwich area, the zip’s reach from town amenities to coastal areas, paired with proximity to rail, continues to support premium medians.
#3. Greenwich 06831, Fairfield County
Median Sale Price: $2,535,000
Greenwich’s 06831 came in third statewide and reached #58 nationally in 2025. It sits alongside Riverside, Old Greenwich and central Greenwich to form one of the densest clusters of top-tier pricing in Connecticut and nationwide. In this part of pricey Greenwich, larger-lot housing and proximity to key commuter routes help sustain high medians, highlighting the pull of Greenwich’s west and backcountry areas.
#4. Darien 06820, Fairfield County
Median Sale Price: $2,358,000
The affluent coastal town of Darien landed just outside the podium, grabbing #4 statewide and #73 nationally. Sporting one of the highest levels of income in the state, Darien also enjoys close proximity to important employment centers. The draw of Darien is further boosted by the well-established reputation of its school district.
Taken together, these factors support a competitive buyer base that keeps median sale prices near the upper edge of Connecticut luxury real estate.
#5. Greenwich 06830, Fairfield County
Median Sale Price: $2,218,000
Nationally ranked at #83, central Greenwich’s 06830 zip code includes a wide range of housing, from waterfront estates, historic homes and large suburban properties to smaller, older homes and luxury condos. The variety of this stock, paired with tight inventories and quick sale timelines, plus its proximity to the Metro-North rail service, yacht clubs, parks and Greenwich Avenue’s retail district supports sustained high-end demand.
#6. New Canaan 06840, Fairfield County
Median Sale Price: $2,090,000
Known for its classic colonials, modern architectural homes and multi-acre estates properties, New Canaan is one of Connecticut most established luxury residential markets and part of the state’s famed Gold Coast. A walkable village center, highly rated public schools and Metro-North service to Manhattan support demand from affluent buyers in one of the most supply-constrained suburban housing markets, contributing to the community’s countrywide significance, landing at #96 in the national top 100.
#7. Norwalk 06853, Fairfield County
Median Sale Price: $2,059,000
Primarily covering Rowayton, Norwalk’s coastal village enclave along the Long Island Sound, zip 06853 was Connecticut’s last zip code to rank nationally in 2025, sliding in at #98. Characterized by waterfront homes, beach access and limited inventory, zip 06853 stood out with premium pricing compared to nearby zips. One of two Norwalk entries in Connecticut’s 25 priciest zip codes, it underscores how established waterfronts and village-style neighborhoods contribute to elevated home pricing in the region.
#8. Westport 06880, Fairfield County
Median Sale Price: $1,968,000
Covering most of Westport, one of Connecticut’s most consistently expensive suburban markets, zip code 06880 blends luxury waterfront estates, updated single family homes and newer construction. Metro-North access, strong school performance and lifestyle amenities maintain strong commuter appeal for high-income professionals.
#9. 06807, Cos Cob, Fairfield County
Median Sale Price: $1,600,000
Adjacent to central Greenwich and Old Greenwich, Cos Cob’s 06807 contributed to an even larger cluster of strong medians along Greenwich’s eastern corridor. Positioned along the Mianus River and Long Island Sound, this zip includes a mix of marinas, waterfront properties and established residential streets. While significantly less pricey than its neighboring Greenwich zips, Cos Cob was still in the uppermost echelons of Connecticut real estate.
#10. Fairfield 06890, Fairfield County
Median Sale Price: $1,382,000
Reflecting consistent buyer interest for established coastal housing stock, zip code 06890 covers the historic harbor village of Southport. Its typical coastal character, 18th and 19th century homes, limited residential stock and the proximity of the Southport train station support consistent buyer interest for established coastal housing.
Conclusions
Connecticut’s luxury landscape in 2025 remained firmly centered in Fairfield County, where dense clusters of high-end coastal and commuter communities continued to command premium pricing. With seven zips landing in the national top 100, the state set a new benchmark for national visibility. From Greenwich’s sweeping dominance to Southport’s million-dollar floor for the state’s top 10, Connecticut’s upper tier reflects sustained demand for waterfront access, rail connectivity and established suburban prestige.
See the full list of Connecticut’s 25 most expensive zip codes below.
Top 100 Most Expensive Zip Codes in 2025 Full List
For the full list of 2025’s top 10 most expensive zip codes in Connecticut, explore the interactive table below:
| Rank 2025 | Zip Code | Location | County | Median Sale Price 2025 |
|---|---|---|---|---|
| 1 | 06878 | Greenwich | Fairfield County | $2,753,000 |
| 2 | 06870 | Greenwich | Fairfield County | $2,650,000 |
| 3 | 06831 | Greenwich | Fairfield County | $2,535,000 |
| 4 | 06820 | Darien | Fairfield County | $2,358,000 |
| 5 | 06830 | Greenwich | Fairfield County | $2,218,000 |
| 6 | 06840 | New Canaan | Fairfield County | $2,090,000 |
| 7 | 06853 | Norwalk | Fairfield County | $2,059,000 |
| 8 | 06880 | Westport | Fairfield County | $1,968,000 |
| 9 | 06807 | Cos Cob | Fairfield County | $1,600,000 |
| 10 | 06890 | Southport | Fairfield County | $1,382,000 |
| 11 | 06883 | Weston | Fairfield County | $1,367,000 |
| 12 | 06783 | Roxbury | Litchfield County | $1,350,000 |
| 13 | 06897 | Wilton | Fairfield County | $1,281,000 |
| 14 | 06824 | Fairfield | Fairfield County | $1,222,000 |
| 15 | 06903 | Stamford | Fairfield County | $1,172,000 |
| 16 | 06896 | Redding | Fairfield County | $957,000 |
| 17 | 06612 | Easton | Fairfield County | $953,000 |
| 18 | 06877 | Ridgefield | Fairfield County | $922,000 |
| 19 | 06855 | Norwalk | Fairfield County | $820,000 |
| 20 | 06785 | South Kent | Litchfield County | $783,000 |
| 21 | 06378 | Stonington | New London County | $776,000 |
| 22 | 06426 | Essex | Middlesex County | $750,000 |
| 23 | 06068 | Salisbury | Litchfield County | $723,000 |
| 24 | 06825 | Fairfield | Fairfield County | $710,000 |
| 25 | 06907 | Stamford | Fairfield County | $700,000 |
Methodology
To determine the most expensive zip codes in Connecticut in 2025, we looked at registered residential transactions closed between January 1, 2025, and November 26, 2025.
We took into account condo, co-op, and single- and two-family home sales, but excluded all multi-parcel deals. For an accurate representation, we only considered zip codes that registered a minimum of five residential transactions.
FAQs
FAQs
1. Which zip code was the most expensive in Connecticut in 2025?
Greenwich zip 06878 in Fairfield County was the most expensive in the state, with a median sale price of $2.75 million.
2. How many Connecticut zip codes made the national top 100 most expensive list?
Seven Connecticut zip codes ranked among the 100 most expensive zip codes in the United States in 2025, setting a new record for the state.
3. What was the price range for the top 10 most expensive CT zip codes in 2025?
The top 10 ranged from a median sale price of $1.38 million for Southport’s 06890 zip up to $2.75 million for Greenwich’s 06878 zip.
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POSTED IN: Most Expensive Zip Codes
Eliza Theiss is a senior writer reporting real estate trends in the US. Her work has been cited by CBS News, Curbed, The Los Angeles Times, and Forbes among others. With an academic background in journalism, Eliza has been covering real estate since 2012. Before joining PropertyShark, Eliza was an associate editor at Multi-Housing News and Commercial Property Executive. She has also contributed extensively to CommercialEdge. Reach her at [email protected]
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