Zip Code 11720
Centereach, New York — Suffolk County
📍 ZIP code 11720 is in Centereach, Suffolk County, New York.
ZIP code 11720 is located in Centereach, Suffolk County, New York. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 28,669. The area code for ZIP code 11720 is 631.
Quick Answer
Zip code 11720 is in Centereach, New York (Suffolk County). It has a population of 28,669, median household income of $128,015, and median home value of $471,600.
Population
28,669
Income
$128,015
Home Value
$471,600
Climate
83°F / 25°F
About Zip Code 11720
Zip code 11720 is located in Centereach, New York, within Suffolk County. Home to approximately 28,669 residents, this area sits at an elevation of 96 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 631.
The median household income is $128,015 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $471,600, and the cost of living index is 160 (60% above the national average of 100).
Summers average a high of 83°F while winters drop to 25°F. The area receives about 46 in of rain and 32 in of snow annually. The zip code covers 8.2 square miles of land area.
Key Statistics
28,669
$128,015
$471,600
Eastern (EST/EDT)
631
96 ft
8.2 sq mi
38.9
9,407
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Compare With Nearby Zip Codes
| Metric | 11720 | 11755 | 11784 | 11738 | 11790 | 11776 |
|---|---|---|---|---|---|---|
| City | Centereach, NY | Lake Grove, NY | Selden, NY | Farmingville, NY | Stony Brook, NY | Port Jefferson Station, NY |
| Population | 28,669 | 11,953 | 25,986 | 20,246 | 19,934 | 23,629 |
| Median Income | $128,015 | $120,306 | $105,268 | $139,008 | $157,695 | $119,480 |
| Home Value | $471,600 | $558,900 | $435,600 | $455,000 | $590,000 | $462,500 |
| Cost of Living | 160 | 175 | 145 | 161 | 202 | 159 |
| Median Age | 38.9 | 43.1 | 38.2 | 35.1 | 23 | 40.2 |
Cost of Living
100 = National Average. Centereach's cost of living is 60% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
3.7x
Demographics
Zip code 11720 has a population of 28,669 people with a median age of 38.9. There are 9,407 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Centereach (11720) population trend from 2010 to 2024
↓ -35.6%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
83°F
25°F
46 in
32 in
Centereach experiences warm summers with average highs around 83°F. Winters are cool with lows averaging 25°F. With 32 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$471,600
Median Household Income
$128,015
With 9,407 housing units across 8.2 square miles, 11720 has a housing density of 1,147 units per square mile. The home price-to-income ratio is 3.7x.
Location & Geography
Latitude
40.8703°
Longitude
-73.0821°
Land Area
8.2 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 11720 (Centereach, NY) with distances:
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 11720's $128,015. A way to compare Centereach to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 11720 (Centereach, NY). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Centereach, New York?
Centereach, New York uses zip code 11720.
What county is zip code 11720 in?
Zip code 11720 is located in Suffolk County, New York.
What is the population of zip code 11720?
The population of zip code 11720 is 28,669 with a median age of 38.9.
Is 11720 in Centereach, New York?
Yes, zip code 11720 is in Centereach, Suffolk County, New York. The area code is 631.
Frequently Asked Questions
What city is zip code 11720 in?
Zip code 11720 is in Centereach, New York. It is part of Suffolk County and uses the Eastern (EST/EDT) timezone.
What is zip code 11720?
Zip code 11720 is a U.S. postal code in Centereach, New York (Suffolk County). It has a population of 28,669 and covers 8.2 square miles.
What is the population of zip code 11720?
The population of zip code 11720 (Centereach, NY) is 28,669 with a median age of 38.9. There are approximately 9,407 housing units in this area.
What is the median income in zip code 11720?
The median household income in zip code 11720 (Centereach, NY) is $128,015 per year. The cost of living index is 160 (100 = national average).
What is the average home price in zip code 11720?
The median home value in zip code 11720 (Centereach, NY) is $471,600. The cost of living index is 160 compared to the national average of 100.
What county is zip code 11720 in?
Zip code 11720 is located in Suffolk County, New York. The primary city is Centereach.
What is the area code for zip code 11720?
Zip code 11720 in Centereach, NY uses area code 631. It is located in the Eastern (EST/EDT) timezone.
Is zip code 11720 a good place to live?
Zip code 11720 (Centereach, NY) has a cost of living index of 160 (100 = national average), a median household income of $128,015, and median home values of $471,600. The median age is 38.9. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 11720?
The cost of living index for zip code 11720 (Centereach, NY) is 160, where 100 represents the national average. This area is above the national average. Median home value: $471,600.
What schools serve zip code 11720?
Zip code 11720 in Centereach, New York is served by the local school district of Suffolk County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.