ZIP Code 06870 — Greenwich, CT Home Prices (2026)
The typical home in ZIP 06870 (Greenwich, Connecticut) is worth about $2,697,000 at roughly $1048 per square foot — 6% more expensive than the Greenwich median and 817% more expensive than the typical U.S. home.
How 06870 compares
ZIP 06870 is one of the pricier ZIP codes in Greenwich: its typical home value of $2,697,000 ranks #2 of the 5 Greenwich ZIP codes we track (the citywide range runs from $1,879,000 in 06807 to $2,710,000 in 06878). Per square foot it costs about $1048, against $936 for Greenwich as a whole, $263 for Connecticut, and $195 nationally.
| Area | Typical value | $ / sq ft |
|---|---|---|
| ZIP 06870 | $2,697,000 | $1048 |
| Greenwich, CT | $2,544,000 | $936 |
| Connecticut | $449,500 | $263 |
| United States | $294,000 | $195 |
Home value by size in 06870
Using this ZIP’s rate of about $1048 per square foot. Condition, lot, and the exact street move these meaningfully — use the estimator below for a home-specific figure.
| Home size | Estimated value |
|---|---|
| 1,000 sq ft | $1,048,000 |
| 1,500 sq ft | $1,572,000 |
| 2,000 sq ft | $2,096,000 |
| 2,500 sq ft | $2,620,000 |
| 3,000 sq ft | $3,144,000 |
Salary needed to buy a home in ZIP 06870
To buy the typical $2,697,000 home in ZIP 06870 with 20% down, you need a household income of roughly $734,000 a year (about $17,120 a month for the mortgage, taxes, and insurance). With 10% down the bar rises to about $872,000, because the loan is bigger and mortgage insurance kicks in.
| Down payment | Cash down | Monthly payment | Income needed |
|---|---|---|---|
| 5% (+PMI) | $134,900 | $21,280/mo | $912,000/yr |
| 10% (+PMI) | $269,700 | $20,340/mo | $872,000/yr |
| 20% | $539,400 | $17,120/mo | $734,000/yr |
Assumes a 30-year fixed mortgage at 6.5%, property tax at 1.1% and insurance at 0.45% of value per year, PMI of 0.75% on loans with less than 20% down, and the standard 28% housing-to-income rule. Your rate, taxes, and HOA will move these — run your own numbers in the mortgage calculator.
What your budget buys in ZIP 06870
At about $1048 per square foot, here is roughly how much home different budgets get you in ZIP 06870:
| Budget | Approx. size | What that looks like locally |
|---|---|---|
| $1.50M | 1430 sq ft | below the local median — condos, smaller or older homes |
| $2.00M | 1910 sq ft | below the local median — condos, smaller or older homes |
| $3.00M | 2860 sq ft | around the typical home here |
Wondering where that budget goes further? The relocation calculator ranks hundreds of U.S. cities by what the same money buys — it opens pre-filled with a typical 06870 home.
Estimate a specific home in 06870
The estimator below is pre-set to ZIP 06870 — pick your home’s size for an instant ballpark, then open the full calculator to adjust beds, baths, and condition.
All Greenwich ZIP codes by home value
Where 06870 sits among Greenwich’s 5 ZIP codes:
| # | ZIP code | Typical value | $ / sq ft |
|---|---|---|---|
| 1 | 06878 | $2,710,000 | $989 |
| 2 | 06870 (this page) | $2,697,000 | $1048 |
| 3 | 06830 | $2,544,000 | $936 |
| 4 | 06831 | $2,181,000 | $853 |
| 5 | 06807 | $1,879,000 | $668 |
ZIP 06870 home prices: frequently asked
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See the full Greenwich home values page, all Connecticut cities, or price per square foot by ZIP code nationwide.
Directional estimates from public market data (Realtor.com & Zillow research), not appraisals. A single ZIP contains very different homes; actual values vary and change over time.