Zip Code 11720 — Centereach, NY
11720 is a ZIP Code associated with Centereach, NY, located within Suffolk. 11720 ranks #15 out of 108 ZIP codes in Suffolk County by population (and #216 out of 1,826 in NY). The area supports an estimated population of 29,292 residents across Data Pending housing units, with a population density of 1,374.5 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (40.870250, -73.082020)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 11720 |
| Primary City | Centereach |
| State / Province | NY |
| County | Suffolk |
| Total Population | 29,292 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 1,374.5 people/sq mi |
| Timezone | America/New_York |
How 11720 Compares
| Metric | ZIP 11720 | Suffolk County | NY State Average |
|---|
| Population | 29,292 | 1,476,044 (Total) | 19,771,902 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 1,374.5 /sq mi | -- | -- |
| County Pop Rank | #15 of 108 | -- | -- |
Nearby ZIP Codes
| ZIP Code | City | Distance | Population | Median Income |
|---|
| Zip 11755 | Lake Grove | 2.0 mi | 12,144 | N/A |
| Zip 11784 | Selden | 2.1 mi | 26,244 | N/A |
| Zip 11738 | Farmingville | 3.2 mi | 18,877 | N/A |
| Zip 11790 | Stony Brook | 3.5 mi | 21,074 | N/A |
| Zip 11776 | Port Jefferson Station | 3.5 mi | 22,808 | N/A |
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →