County directory · New Jersey · 2026–27
School districts in Warren County, NJ
Warren County has 22 regular public school districts, enrolling 15,103 students in 2024–25. The largest is Phillipsburg School District (3,975 students, 26% of the county), followed by Hackettstown Public School District and Warren Hills Regional School District. 20 of the 22 offer kindergarten. New Jersey's kindergarten cutoff: turn 5 by October 1 (a minimum; districts may admit younger).
The 22 districts, largest first
| District and office | Grades | Schools | Students | Kindergarten | District office contact |
|---|---|---|---|---|---|
| Phillipsburg School District 50 Sargent Avenue, Phillipsburg | Pre-K–12 | 5 | 3,975 | 194 | (908) 454-3400 |
| Hackettstown Public School District 315 Washington Street, Hackettstown | Pre-K–12 | 4 | 2,014 | 105 | (908) 850-6500 |
| Warren Hills Regional School District 89 Bowerstown Road, Washington | 7–12 | 2 | 1,549 | — | (908) 689-3143 |
| Lopatcong Township School District 321 Stonehenge Drive, Phillipsburg | Pre-K–8 | 2 | 724 | 64 | (908) 213-2995 |
| Great Meadows Regional School District 281 Route 46, Great Meadows | Pre-K–8 | 2 | 710 | 60 | (908) 637-6576 |
| Greenwich Township School District 101 Wyndham Farm Boulevard, Stewartsville | Pre-K–8 | 2 | 607 | 50 | (908) 859-2022 |
| North Warren Regional 10 Noe Road, Blairstown | 7–12 | 1 | 596 | — | (908) 362-8211 |
| Belvidere School District 809 OXFORD STREET, BELVIDERE | Pre-K–12 | 2 | 583 | 36 | (908) 475-6600 |
| Mansfield Township Elementary School District 50 Port Murray Road, Port Murray | Pre-K–6 | 1 | 571 | 70 | (908) 689-3212 |
| Washington Boro School District 300 West Stewart Street, Washington | Pre-K–6 | 2 | 562 | 74 | (908) 689-0241 |
| Washington Township School District 1 East Front St., Washington | Pre-K–6 | 2 | 436 | 59 | (908) 689-1119 |
| Allamuchy Township School District 20 Johnsonburg Road, Allamuchy | Pre-K–8 | 2 | 427 | 41 | (908) 852-1894 |
| Blairstown Elementary Township School District 1 Sunset Hill Road, Blairstown | Pre-K–6 | 1 | 420 | 53 | (908) 362-6111 |
| Pohatcong Township School District 240 Route 519, Phillipsburg | Pre-K–8 | 1 | 308 | 22 | (908) 859-8155 |
| White Township Consolidated School District 565 CR 519, Belvidere | Pre-K–8 | 1 | 278 | 31 | (908) 475-4773 |
| Oxford Township School District 17 Kent Street, Oxford | Pre-K–8 | 1 | 263 | 22 | (908) 453-4101 |
| Franklin Township School District 52 Asbury-Broadway Road, Washington | Pre-K–6 | 1 | 251 | 29 | (908) 689-2958 |
| Alpha Borough School District 817 North Blvd., Alpha | Pre-K–8 | 1 | 219 | 17 | (908) 454-5000 |
| Harmony Township School District 2551 BELVIDERE ROAD, PHILLIPSBURG | Pre-K–8 | 1 | 189 | 16 | (908) 859-1001 |
| Knowlton Township School District 80 Route 46, Delaware | Pre-K–6 | 1 | 175 | 24 | (908) 475-5118 |
| Hope Township School District 320 Johnsonburg Road, Hope | Pre-K–5 | 1 | 124 | 9 | (908) 459-4242 |
| Frelinghuysen Township School District 780 Route 94, Newton | Pre-K–6 | 1 | 122 | 17 | (908) 362-6319 |
Warren County at a glance
Together the 22 districts run 37 schools from offices in 16 towns. The smallest by enrollment is Frelinghuysen Township School District, with 122 students; the median Warren County district has 427. By grade span: 9 Pre-K–8, 7 Pre-K–6, 3 Pre-K–12, 2 7–12 and 1 Pre-K–5. Without kindergarten: Warren Hills Regional School District (7–12) and North Warren Regional (7–12).
Kindergarten in 2024–25, counting the 20 districts that report a K grade: 993 children. The biggest kindergarten was Phillipsburg School District's, with 194; Hackettstown Public School District had 105, and the smallest, Hope Township School District, had 9.
Warren County holds 22 of New Jersey's 559 regular districts (3.9%) and 1.2% of its 1,298,502 public school students, ranking 12th of 21 counties by number of districts and 19th by enrollment. By size, 3 enroll 1,000 to 4,999 and 19 have fewer than 1,000 students, and the average school here has about 408 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:
Phillipsburg School District · Hackettstown Public School District · Warren Hills Regional School District · Lopatcong Township School District · Great Meadows Regional School District · Greenwich Township School District · North Warren Regional · Belvidere School District · Mansfield Township Elementary School District · Washington Boro School District · Washington Township School District · Allamuchy Township School District · Blairstown Elementary Township School District · Pohatcong Township School District · White Township Consolidated School District · Oxford Township School District · Franklin Township School District · Alpha Borough School District · Harmony Township School District · Knowlton Township School District · Hope Township School District · Frelinghuysen Township School District
What grade will my child be in?
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) · Gloucester County (27) · Hudson County (12)