Suffolk County, New York
Suffolk County: county in New York, United States
About
Suffolk County is a county located in the U.S. state of New York. As of the 2010 census, the population was 1,493,350 and a population density of 243 people per km². After 10 years in 2020 county had an estimated population of 1,474,273 inhabitants. Its county seat is Riverhead. The county was created 343 years ago in 1682.
County Snapshot
Suffolk County at a glance
Suffolk County currently has 133 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
133
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
New York counties
61
Open related pagesLargest city
BrookhavenPopulation 479,883
Top linked places
Quick Facts about Suffolk County
| Population | 1,474,273 (2020) |
| Country | United States of America |
| State | New York (United States) |
| Different from | Suffolk, Suffolk County |
| Area | 6146 km2 |
| Water as percent of area | 62% |
| Land as percent of area | 38% |
| Latitude & Longitude | 40.9405,-72.6852 |
| Named for | Suffolk |
| Altitude | 49 feet / 15 meters |
| Capital | Riverhead |
| Establishment | January 01, 1683 |
| Time Zone | America/New_York |
| Local time | 01:29:15 (17th April 2026) |
| Density | 240 Pop. per km² as of 2020 |
| Population growth | -1.29% (2010-2020) |
| Weather | 73℉ Showers And Thunderstorms Likely 7-days weather |
Geography
Suffolk County is located at 40°56'26"N 72°41'7"W (40.9404600, -72.6852400). It has 6 neighbors: Fairfield County, Middlesex County, New Haven County, New London County, Nassau County and Washington County.
Suffolk County map
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The largest city of Suffolk County is Brookhaven with a population of 479,883. Other cities include, Islip population 322,328, Babylon population 218,223, Huntington population 200,102 and Southampton population 58,549. See all Suffolk County cities & populated places.
Suffolk County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Suffolk County.
| City Name | Population | Title |
|---|---|---|
| Brookhaven | 479,883 | This town in Suffolk County, New York, is the most populous in the state. |
| Islip | 322,328 | This Long Island community is situated on the south shore of Suffolk County, New York, at an elevation of 13 feet. |
| Babylon | 218,223 | A town in Suffolk County, New York. |
| Huntington | 200,102 | Town in Suffolk County, New York, United States |
| Smithtown | 110,876 | Census-designated place in Suffolk County, New York |
| Brentwood | 60,664 | Census-designated place in Suffolk County, New York |
| Southampton | 58,549 | Town in Suffolk County, New York, partly on the South Fork of Long Island, USA |
| West Babylon | 43,213 | Census-designated place in Suffolk County, New York |
| Coram | 39,113 | Census-designated place in Suffolk County, New York |
| Commack | 36,124 | Census-designated place in Suffolk County, New York |
| Central Islip | 34,450 | Census-designated place in Suffolk County, New York |
| Riverhead | 33,434 | Town in New York |
| Huntington Station | 33,029 | Census-designated place in Suffolk County, New York |
| Centereach | 31,578 | Census-designated place in Suffolk County, New York |
| West Islip | 28,335 | Census-designated place in Suffolk County, New York |
| Shirley | 27,854 | Census-designated place in New York, USA |
Weather
A slight chance of rain showers before 11am, then showers and thunderstorms likely. Partly sunny. High near 73, with temperatures falling to around 69...
7-Day ForecastOfficial website of Suffolk County
Official Website- Riverhead
Demographics
According to census records, the population of Suffolk County decreased by 1.29% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 1,493,350 | - | census |
| 2011 | 1,498,892 | 0.37% | estimation process |
| 2012 | 1,496,982 | -0.13% | estimation process |
| 2013 | 1,497,346 | 0.02% | estimation process |
| 2014 | 1,495,525 | -0.12% | estimation process |
| 2015 | 1,491,967 | -0.24% | estimation process |
| 2016 | 1,486,406 | -0.37% | estimation process |
| 2017 | 1,483,358 | -0.21% | estimation process |
| 2018 | 1,480,830 | -0.17% | estimation process |
| 2019 | 1,476,601 | -0.29% | estimation process |
| 2020 | 1,474,273 | -0.16% | estimation process |
People born in Suffolk County (12)
People born in Suffolk County, including United States Marine Arthur J. Nascarella, magazine publisher Eric Corley, football player and coach Ed Danowski, .
More notable people
- Mercator Cooper (American whaler) he was born in 29/09/1803
- Michael Plumb (American equestrian) he was born in 28/03/1940
- Vladimir Nikiforov (American ice hockey player) he was born in 07/10/1987
- Julie Halston (American actress) she was born in 07/12/1954
- Lindsay Gulin (American baseball player) he was born in 22/11/1976
- William E. Woodruff (first Treasurer of Arkansas) he was born in 24/12/1795
- Benjamin Franklin Conklin (American sea captain) he was born in 01/01/1832
- Jackie Tonawanda (American boxer) she was born in 04/09/1933
- Meagan Cignoli (American photographer, filmmaker, and businessperson)
Other places with the same name (1)
- Suffolk County, Massachusetts county in Massachusetts, United States with a population of 801,582 people.
New York Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| New York City | 8,398,748 | The most populous city in the United States and the center of the New York metropolitan area. |
| Brooklyn | 2,577,000 | A borough of New York City. |
| Queens | 2,339,150 | The most populous borough of New York City. |
| Queens County | 2,225,821 | County in New York, United States |
| Manhattan | 1,644,518 | The most densely populated borough of New York City. |
| New York County | 1,611,989 | County in New York state, United States of America |
| The Bronx | 1,455,720 | The fourth most populous borough of New York City. |
| Bronx County | 1,401,142 | Borough of New York City, United States |
| Nassau County | 1,351,334 | County in New York, United States |
| Westchester County | 965,802 | County in New York, United States. |
| Erie County | 917,241 | County in New York, United States |
| Hempstead | 764,055 | Located in Nassau County, New York, this hamlet and village is a major commercial and transportation hub. |
| Monroe County | 740,900 | County in Florida, United States |
| Brookhaven | 479,883 | This town in Suffolk County, New York, is the most populous in the state. |
| Richmond County | 475,327 | County in Georgia, United States |
| Staten Island | 474,558 | The fifth most populous borough of New York City. |