Suffolk County

New York · Public K-12

Suffolk County is one of New York's public-school counties, with 343 campuses serving about 222,439 students (209 elementary, 66 middle, and 59 high). Median household income in the county is roughly $130,686.

7-year change in Suffolk County

SY 2017-18 vs SY 2024-25

Total enrollment

222,431

-16,138 (-7%) vs SY 2017-18

School count

342

0 (0%) vs SY 2017-18

% White

43%

was 54%

% Hispanic

40%

was 31%

% Black

was 8%

% Asian

was 4%

Source: NCES Common Core of Data, enrollment-weighted demographic averages

Residents

1,530,146

all ages · ACS 5-yr

Schools

343

77 districts

Enrollment

222,439

students · NCES CCD

Median income

$130,686

Above New York avg

Free/reduced lunch

39.4%

Below New York avg

Elementary

209

95,097 students

Middle

47,889 students

High

74,596 students

Combined / other

4,857 students

LARGEST DISTRICT

BRENTWOOD UNION FREE SCHOOL DISTRICT

17,844 students · 77 districts in Suffolk County

County vs. school enrollment demographics

Left bar is the racial makeup of Suffolk County residents (Census ACS 5-year). Right bar is the enrollment-weighted makeup of public schools in the county (NCES CCD). NCES systematically under-reports Hispanic, Pacific Islander, and Native American enrollment for many schools; where the resident share is meaningful but the reported school share is zero, we mark the school bar "not reported".

County residents

White

66%

Hispanic

23%

Black

Asian

Two or more

12%

Native American

Pacific Islander

School enrollment

White

43%

Hispanic

40%

Black

Asian

Two or more

Native American

Pacific Islander

Bachelor's+

40.2%

adults 25+

Poverty rate

4.0%

ACS 5-year

Unemployment

4.7%

civilian labor

Median age

20.8% under 18

Test scores in Suffolk County

Latest 2024-25 ELA proficiency, 294 schools ranked. New York state average: 58.3%.

Top 5 schools (ELA)

CENTER MORICHES HIGH SCHOOL· 98.0%
HARBORFIELDS HIGH SCHOOL· 98.0%
HALF HOLLOW HILLS HIGH SCHOOL WEST· 97.0%
SAYVILLE HIGH SCHOOL· 97.0%
SMITHTOWN HIGH SCHOOL-WEST· 97.0%

Lowest 5 schools (ELA)

See all 294 schools in Suffolk County ranked by score →

All schools (343)

Largest A-Z Top rated

Name	City	Level	Grades	Enrollment	Rating
BRENTWOOD HIGH SCHOOL	Brentwood	High	09-12	4,816	·
WILLIAM FLOYD HIGH SCHOOL	Mastic Beach	High	09-12	3,107	·
LONGWOOD HIGH SCHOOL	Middle Island	High	09-12	2,993	·
CENTRAL ISLIP SENIOR HIGH SCHOOL	Central Islip	High	09-12	2,615	·
PATCHOGUE-MEDFORD HIGH SCHOOL	Medford	High	09-12	2,487	·
EASTERN SUFFOLK BOCES	Patchogue	Combined	KG-12	2,043	·
SACHEM HIGH SCHOOL NORTH	Lake Ronkonkoma	High	09-12	2,008	·
SACHEM HIGH SCHOOL EAST	Farmingville	High	09-12	1,984	·
WALT WHITMAN HIGH SCHOOL	Huntington Station	High	09-12	1,939	·
RIVERHEAD SENIOR HIGH SCHOOL	Riverhead	High	09-12	1,927	·
LINDENHURST SENIOR HIGH SCHOOL	Lindenhurst	High	09-12	1,868	·
BAY SHORE SENIOR HIGH SCHOOL	Bay Shore	High	09-12	1,862	·
CONNETQUOT HIGH SCHOOL	Bohemia	High	09-12	1,774	·
COMMACK HIGH SCHOOL	Commack	High	09-12	1,728	·
NORTH BABYLON HIGH SCHOOL	North Babylon	High	09-12	1,607	·
WALTER G O'CONNELL COPIAGUE HIGH SCHOOL	Copiague	High	09-12	1,567	·
NEWFIELD HIGH SCHOOL	Selden	High	09-12	1,553	·
NORTHPORT SENIOR HIGH SCHOOL	Northport	High	09-12	1,476	·
EASTPORT-SOUTH MANOR JUNIOR SENIOR HIGH SCHOOL	Manorville	High	07-12	1,469	·
CENTEREACH HIGH SCHOOL	Centereach	High	08-12	1,467	·
WARD MELVILLE SENIOR HIGH SCHOOL	East Setauket	High	09-12	1,442	·
HALF HOLLOW HILLS HIGH SCHOOL EAST	Dix Hills	High	09-12	1,407	·
SMITHTOWN HIGH SCHOOL EAST	Saint James	High	09-12	1,403	·
HUNTINGTON HIGH SCHOOL	Huntington	High	09-12	1,363	·
LONGWOOD JUNIOR HIGH SCHOOL	Middle Island	Middle	07-08	1,363	·
BELLPORT SENIOR HIGH SCHOOL	Brookhaven	High	09-12	1,340	·
COMMACK MIDDLE SCHOOL	Commack	Middle	06-08	1,337	·
DEER PARK HIGH SCHOOL	Deer Park	High	09-12	1,326	·
LONGWOOD MIDDLE SCHOOL	Middle Island	Middle	05-06	1,304	·
BRENTWOOD HIGH SCHOOL FRESHMAN CAMPUS	Brentwood	High	09-09	1,287	·
LINDENHURST MIDDLE SCHOOL	Lindenhurst	Middle	06-08	1,260	·
BAY SHORE MIDDLE SCHOOL	Bay Shore	Middle	06-08	1,258	·
WEST BABYLON SENIOR HIGH SCHOOL	West Babylon	High	09-12	1,228	·
RALPH REED SCHOOL	Central Islip	Middle	07-08	1,192	·
EAST ISLIP HIGH SCHOOL	Islip Terrace	High	09-12	1,170	·
WEST ISLIP SENIOR HIGH SCHOOL	West Islip	High	09-12	1,163	·
COMSEWOGUE HIGH SCHOOL	Port Jefferson Sta	High	09-12	1,160	·
SMITHTOWN HIGH SCHOOL-WEST	Smithtown	High	09-12	1,158	·
WILLIAM FLOYD MIDDLE SCHOOL	Moriches	Middle	06-08	1,124	·
EAST MIDDLE SCHOOL	Brentwood	Middle	06-08	1,108	·
COPIAGUE MIDDLE SCHOOL	Copiague	Middle	06-08	1,081	·
SELDEN MIDDLE SCHOOL	Centereach	Middle	06-09	1,080	·
WILLIAM PACA MIDDLE SCHOOL	Mastic Beach	Middle	06-08	1,078	·
EAST HAMPTON HIGH SCHOOL	East Hampton	High	09-12	1,069	·
NORTH MIDDLE SCHOOL	Brentwood	Middle	06-08	1,051	·
HAUPPAUGE HIGH SCHOOL	Hauppauge	High	09-12	1,038	·
HALF HOLLOW HILLS HIGH SCHOOL WEST	Dix Hills	High	09-12	1,028	·
ROBERT MOSES MIDDLE SCHOOL	North Babylon	Middle	06-08	1,022	·
CHARLES A MULLIGAN ELEMENTARY SCHOOL	Central Islip	Elementary	KG-06	997	·
SOUTH MIDDLE SCHOOL	Brentwood	Middle	06-08	975	·
SOUTHWEST ELEMENTARY SCHOOL	Bay Shore	Elementary	KG-05	975	·
RIVERHEAD CHARTER SCHOOL	Calverton	Combined	KG-12	972	·
WESTHAMPTON BEACH SENIOR HIGH SCHOOL	Westhampton Beach	High	09-12	970	·
WEST HOLLOW MIDDLE SCHOOL	Melville	Middle	06-08	968	·
DAWNWOOD MIDDLE SCHOOL	Centereach	Middle	06-08	967	·
CORAM ELEMENTARY SCHOOL	Coram	Elementary	KG-04	951	·
NORTHEAST ELEMENTARY SCHOOL	Brentwood	Elementary	01-05	937	·
AMITYVILLE MEMORIAL HIGH SCHOOL	Amityville	High	09-12	936	·
SENECA MIDDLE SCHOOL	Holbrook	Middle	06-08	928	·
HARBORFIELDS HIGH SCHOOL	Greenlawn	High	09-12	923	·
ROBERT FROST MIDDLE SCHOOL	Deer Park	Middle	06-08	913	·
WEST MIDDLE SCHOOL	Bay Shore	Middle	06-08	906	·
ROCKY POINT HIGH SCHOOL	Rocky Point	High	09-12	894	·
SAGAMORE MIDDLE SCHOOL	Holtsville	Middle	06-08	893	·
ISLIP HIGH SCHOOL	Islip	High	09-12	890	·
JOHN F KENNEDY INTERMEDIATE SCHOOL	Deer Park	Elementary	03-05	882	·
NORTH ELEMENTARY SCHOOL	Brentwood	Elementary	01-05	881	·
WESTERN SUFFOLK BOCES	Dix Hills	Combined	KG-12	866	·
MORICHES ELEMENTARY SCHOOL	Moriches	Elementary	KG-05	861	·
WYANDANCH MEMORIAL HIGH SCHOOL	Wyandanch	High	09-12	850	·
BELLPORT MIDDLE SCHOOL	Bellport	Middle	06-08	848	·
SAMOSET MIDDLE SCHOOL	Lake Ronkonkoma	Middle	06-08	847	·
HENRY L STIMSON MIDDLE SCHOOL	Huntington Station	Middle	07-08	845	·
KINGS PARK HIGH SCHOOL	Kings Park	High	09-12	823	·
ANDREW T MORROW SCHOOL	Islandia	Elementary	KG-06	821	·
WEST BABYLON JUNIOR HIGH SCHOOL	West Babylon	Middle	06-08	817	·
JOHN F KENNEDY MIDDLE SCHOOL	Port Jefferson Sta	Middle	06-08	814	·
SAYVILLE HIGH SCHOOL	West Sayville	High	09-12	814	·
NATHANIEL WOODHULL ELEMENTARY SCHOOL	Shirley	Elementary	KG-05	812	·
TWIN PINES ELEMENTARY SCHOOL	Brentwood	Elementary	01-05	804	·
PULASKI STREET ELEMENTARY SCHOOL	Riverhead	Middle	05-06	797	·
JOHN S HOBART ELEMENTARY SCHOOL	Shirley	Elementary	KG-05	796	·
C E WALTERS SCHOOL	Yaphank	Elementary	KG-04	795	·
RIVERHEAD MIDDLE SCHOOL	Riverhead	Middle	06-08	793	·
HAMPTON BAYS HIGH SCHOOL	Hampton Bays	High	09-12	784	·
NEW LANE MEMORIAL ELEMENTARY SCHOOL	Selden	Elementary	01-05	771	·
TANGIER SMITH ELEMENTARY SCHOOL	Mastic Beach	Elementary	KG-05	770	·
MILLER PLACE HIGH SCHOOL	Miller Place	High	09-12	764	·
EAST ISLIP MIDDLE SCHOOL	Islip Terrace	Middle	06-08	758	·
WILLIAM FLOYD ELEMENTARY SCHOOL	Shirley	Elementary	KG-05	757	·
GREAT HOLLOW MIDDLE SCHOOL	Nesconset	Middle	06-08	750	·
GARDINER MANOR SCHOOL	Bay Shore	Elementary	03-05	739	·
HAUPPAUGE MIDDLE SCHOOL	Hauppauge	Middle	06-08	725	·
COLD SPRING HARBOR HIGH SCHOOL	Cold Spring Harbor	High	07-12	719	·
ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL	Mount Sinai	High	09-12	710	·
VANDERBILT ELEMENTARY SCHOOL	Dix Hills	Elementary	KG-05	708	·
CANDLEWOOD MIDDLE SCHOOL	Dix Hills	Middle	06-08	706	·
WEST MIDDLE ISLAND SCHOOL	Middle Island	Elementary	KG-04	697	·
NORTHPORT MIDDLE SCHOOL	Northport	Elementary	KG-08	694	·
SPRINGS SCHOOL	East Hampton	Elementary	PK-08	690	·

Cities in Suffolk County

Bay Shore13 schools Brentwood13 schools Dix Hills11 schools Huntington9 schools Centereach8 schools Central Islip8 schools Lindenhurst8 schools Patchogue8 schools Smithtown8 schools Commack7 schools Huntington Station7 schools North Babylon7 schools West Babylon7 schools West Islip7 schools Copiague6 schools Port Jefferson Sta6 schools Riverhead6 schools Deer Park5 schools Holbrook5 schools Islip5 schools Northport5 schools Selden5 schools Wyandanch5 schools Amityville4 schools Bayport4 schools Bohemia4 schools East Hampton4 schools East Setauket4 schools Islip Terrace4 schools Kings Park4 schools Medford4 schools Middle Island4 schools Miller Place4 schools Rocky Point4 schools Ronkonkoma4 schools Shirley4 schools Southampton4 schools Babylon3 schools Bellport3 schools Center Moriches3 schools East Northport3 schools Elwood3 schools Greenlawn3 schools Hampton Bays3 schools Hauppauge3 schools Holtsville3 schools Lake Grove3 schools Lake Ronkonkoma3 schools Manorville3 schools Mastic Beach3 schools Melville3 schools Mount Sinai3 schools Port Jefferson3 schools Saint James3 schools Sayville3 schools Shoreham3 schools Westhampton Beach3 schools Brookhaven2 schools Calverton2 schools Cold Spring Harbor2 schools East Islip2 schools East Moriches2 schools Eastport2 schools Farmingville2 schools Greenport2 schools Moriches2 schools Nesconset2 schools Oakdale2 schools Sag Harbor2 schools Setauket2 schools Southold2 schools Stony Brook2 schools Wading River2 schools West Sayville2 schools Amagansett1 school Aquebogue1 school Blue Point1 school Bridgehampton1 school Centerport1 school Coram1 school Cutchogue1 school East Patchogue1 school East Quogue1 school Farmingdale1 school Fishers Island1 school Islandia1 school Mattituck1 school Montauk1 school New Suffolk1 school Orient1 school Quogue1 school Remsenburg1 school Ridge1 school Sagaponack1 school Shelter Island1 school St James1 school Wainscott1 school Yaphank1 school

About Suffolk County

Suffolk County is a sizable New York county of about 1,530,146 residents, home to 343 public schools and roughly 222,439 students.

Stepping back, census numbers show median household income runs near $130,686, about 40% of adults have a bachelor's degree or above, and roughly 4% of residents live below the federal poverty line. That income level is 68% noticeably above the New York median.

On the level-by-level breakdown, Suffolk County consists of 209 elementary schools (95,097 students), 66 middle schools (47,889), 59 high schools (74,596), and 9 combined or other schools.

The largest single district in Suffolk County is BRENTWOOD UNION FREE SCHOOL DISTRICT, which alone enrolls about 17,844 students.

Trend over the past 7 years. Total public-school enrollment in Suffolk County has shrank 7% since SY 2017-18, moving from about 238,569 students to 222,431. On the demographic side, White enrollment moved from 54% to 43% over the same window.

On this page, the community for Suffolk County discusses enrollment trends, district policy changes, and bus-route updates. Members of the local community share what they see day-to-day.

Frequently asked questions

How many public schools are in Suffolk County?

Suffolk County, New York has 343 public K-12 schools serving approximately 222,439 students.

How many high schools are in Suffolk County?

Suffolk County, New York has 59 public high schools, serving approximately 74,596 students.

How many middle schools are in Suffolk County?

Suffolk County, New York has 66 public middle schools, serving approximately 47,889 students.

How many elementary schools are in Suffolk County?

Suffolk County, New York has 209 public elementary schools, serving approximately 95,097 students.

What is the largest school district in Suffolk County?

BRENTWOOD UNION FREE SCHOOL DISTRICT is the largest school district in Suffolk County, serving approximately 17,844 students. The county contains 77 school districts overall.

What is the population of Suffolk County?

Suffolk County, New York has a population of approximately 1,530,146, with a median age of 42. About 20.8% of residents are under 18.

What is the median household income in Suffolk County?

Median household income in Suffolk County is $130,686, above the New York average of $77,785. About 4.0% of residents live below the federal poverty line.

How educated are residents of Suffolk County?

Approximately 40.2% of adults 25 and older in Suffolk County hold a bachelor's degree or higher, according to the Census ACS 5-year estimate.

What share of students in Suffolk County qualify for free or reduced lunch?

Roughly 39.4% of students in Suffolk County public schools qualify for free or reduced-price lunch, a common proxy for low-income enrollment. This is lower than the New York county average of 48.7%.

What is the student-teacher ratio in Suffolk County schools?

Across Suffolk County public schools, the enrollment-weighted student-teacher ratio is approximately 11.8 to 1.

Suffolk County school rankings

Largest schools All rankings →

DATA · Census ACS 5-year · NCES Common Core of Data