County directory · New Jersey · 2026–27

School districts in Union County, NJ

Union County has 22 regular public school districts, enrolling 97,390 students in 2024–25. The largest is Elizabeth Public Schools (28,454 students, 29% of the county), followed by Plainfield Public School District and Township of Union School District. All 22 offer kindergarten. New Jersey's kindergarten cutoff: turn 5 by October 1 (a minimum; districts may admit younger).

The 22 districts, largest first

School districts in Union County, NJ by 2024–25 enrollment
District and officeGradesSchoolsStudentsKindergartenDistrict office contact
Elizabeth Public Schools
500 North Broad Street, Elizabeth
Pre-K–123728,4541,776
(908) 436-5000
Plainfield Public School District
1200 Myrtle Avenue, Plainfield
Pre-K–121610,195765
(908) 731-4200
Township of Union School District
2369 Morris Avenue, Union
Pre-K–12108,030501
(908) 851-6400
Linden Public School District
2 E. Gibbons Street, Linden
Pre-K–12116,664461
(908) 486-2800
Westfield Public School District
302 Elm Street, Westfield
Pre-K–12105,931185
(908) 789-4420
Scotch Plains-Fanwood School District
313 South Ave, Fanwood
Pre-K–1285,752415
(908) 232-6161
Rahway Public School District
1157 Kline Place, Rahway
Pre-K–1264,311268
(732) 396-1000
Summit Public School District
14 Beekman Terrace, Summit
Pre-K–1294,013276
(908) 918-2100
Cranford Public School District
132 Thomas Street, Cranford
Pre-K–1273,793223
(908) 272-9100
Roselle Public School District
710 LOCUST STREET, ROSELLE
Pre-K–1273,220220
(908) 298-2040
Hillside Public School District
195 Virginia Street, Hillside
Pre-K–1273,010180
(908) 352-7664
Berkeley Heights School District
345 Plainfield Avenue, Berkeley Heights
Pre-K–1262,349149
(908) 464-1718
New Providence School District
356 Elkwood Avenue, New Providence
Pre-K–1242,298146
(908) 464-9050
Clark Township Public School District
365 Westfield Avenue, Clark
Pre-K–1252,297129
(732) 574-9600
Springfield Public School District
139 Mountain Avenue, Springfield
Pre-K–1252,229155
(973) 376-1025
Roselle Park Public School District
510 CHESTNUT STREET, ROSELLE PARK
Pre-K–1252,071123
(908) 245-1197
Kenilworth School District
426 Boulevard, Kenilworth
Pre-K–1231,45181
(908) 276-1644
Mountainside School District
1497 Woodacres Drive, Mountainside
Pre-K–8276272
(908) 232-8828
Garwood Boro
500 East Street, Garwood
Pre-K–8141839
(908) 789-0331
Winfield Township
7 1/2 Gulfstream Avenue, Winfield Twp
Pre-K–8114214
(908) 486-7410
Morris-Union Jointure Commission School District
340 Central Avenue, New Providence
Pre-K–12200
(908) 464-7625
Union County Educational Services Commission
45 Cardinal Drive, Westfield
Pre-K–12600
(908) 233-9317

Union County at a glance

Together the 22 districts run 168 schools from offices in 20 towns. The smallest by enrollment is Union County Educational Services Commission, with 0 students; the median Union County district has 2,349. By grade span: 19 Pre-K–12 and 3 Pre-K–8.

Kindergarten in 2024–25, counting the 20 districts that report a K grade: 6,178 children. The biggest kindergarten was Elizabeth Public Schools's, with 1,776; Plainfield Public School District had 765, and the smallest, Winfield Township, had 14.

Union County holds 22 of New Jersey's 559 regular districts (3.9%) and 7.5% of its 1,298,502 public school students, ranking 12th of 21 counties by number of districts and 4th by enrollment. By size, 6 enroll 5,000 or more, 11 enroll 1,000 to 4,999 and 5 have fewer than 1,000 students, and the average school here has about 580 students.

Which district am I in?

Each district draws its own attendance zones, so your home address decides it. There is no address lookup here; ask the district. Each one's own site:

Elizabeth Public Schools · Plainfield Public School District · Township of Union School District · Linden Public School District · Westfield Public School District · Scotch Plains-Fanwood School District · Rahway Public School District · Summit Public School District · Cranford Public School District · Roselle Public School District · Hillside Public School District · Berkeley Heights School District · New Providence School District · Clark Township Public School District · Springfield Public School District · Roselle Park Public School District · Kenilworth School District · Mountainside School District · Garwood Boro · Winfield Township · Morris-Union Jointure Commission School District · Union County Educational Services Commission

What grade will my child be in?

↓ Tap Calculate to see the grade
Most US states use a September 1 cutoff. Year-stamped for the 2026–27 school year.

More in New Jersey

Every New Jersey district by county · New Jersey kindergarten cutoff

More New Jersey county directories: Atlantic County (23) · Bergen County (75) · Burlington County (38) · Camden County (38) · Cape May County (15) · Warren County (22)

Sources

District list, grades, school counts and websites: NCES Common Core of Data (CCD) LEA Universe Directory, SY 2025-26 (preliminary, v0a), published July 1, 2026. Regular public districts only (NCES LEA types 1 and 2); charter-only, state-run and regional service agencies are not listed.
Enrollment: NCES CCD LEA Membership, SY 2024-25 (v1a), published December 29, 2025 — the newest year NCES has released.
Counties: NCES EDGE Public LEA Geocodes, SY 2024-25 (district office location) and NCES EDGE Geographic Relationship Files 2025 (grf25_lea_county) (counties each district boundary covers).
Downloaded October 20, 2026. Spot something off? Email [email protected].