RANK #227 / 996 · POP 1,524,486 · NY
PROJECTED GROWTH: +1.9%
Suffolk County, located on the eastern two-thirds of Long Island, New York, is known for its diverse landscapes, from the upscale Hamptons to historic towns like Port Jefferson and Huntington. The county is bordered by the Atlantic Ocean and Long Island Sound, offering over 1,000 miles of coastline and numerous beaches. Commuting to New York City is possible via the Long Island Rail Road (LIRR), Suffolk County Transit, and express bus services like the Hampton Jitney. The area provides extensive outdoor recreation, including state parks like Heckscher State Park and Sunken Meadow State Park, offering hiking, fishing, and camping.
Life in Suffolk County offers a suburban feel with access to natural surroundings. The public school system is highly rated, with districts like Half Hollow Hills, Harborfields, and Kings Park High School recognized for strong academic performance. The economy is diverse, with significant contributions from science, agriculture, fishery, and tourism. Major institutions like Brookhaven National Laboratory and Stony Brook University are located within the county. Recent economic developments include investments in infrastructure and downtown revitalization, with a focus on creating varied housing options.
Above national median (4.7x)
Above national median
Moderate climate & terrain
Housing is fairly valued at 6.9x relative to local economic output. The typical U.S. county is 4–6x.
Source: Redfin · Census BPS — Browse sales on Redfin →
| PROJECT | AMOUNT | STATUS |
|---|---|---|
|
Long Island Wind Offshore Wind Farm
Ørsted
|
$1,485M | Proposed |
|
Sunrise Wind Offshore Wind Farm
Ørsted
|
$700M | Under Construction |
|
Suffolk County Sewer Infrastructure (Carlls River-Wyandanch, Wheatley Heights, Deer Park, Forge River, Southwest Sewer District No. 3, Smithtown)
Suffolk County
|
$541M | Planned |
|
Suffolk County Road, Bridge, and Transit Improvements (including NYS Route 110 Bus Rapid Transit)
Suffolk County
|
$247M | Planned |
|
Holtsville Energy Storage Facility
None
|
$110M | Proposed |
|
Boralex Yaphank Battery Energy Storage System
Boralex Inc. & Savion, LLC
|
$77M | Planned |
Source: public records, news, corporate announcements. Amounts are estimates where noted.
Bars show percentile rank among all 996 counties.
Suffolk County has a Boom Town Index score of 77/100, ranking #227 among 996 U.S. counties. With job growth at +2.3% and a median household income of $122,498, it's an above-average county on economic indicators.
The median home value in Suffolk County is $490,800 with median rent at $2,113/month. The income-to-home-value ratio is 0.2496, which is less affordable than the national average.
Population growth: +0.1% year-over-year. Job growth: +2.3%. Home values changed +3.0% in the past 12 months.
Yes — 2.1% of Suffolk County's population moved from another state, which is above the national average and indicates strong in-migration.