NJ County and Municipal Jails — How Pretrial Detention Works

By John S. Avery, Esq.

The NJ pretrial-detention landscape changed materially with the 2017 Criminal Justice Reform Act, codified at N.J.S.A. 2A:162-15 et seq. NJ moved from the historical money-bail system to a risk-assessment-based pretrial regime that uses the Public Safety Assessment (PSA) to recommend release on recognizance (ROR), release with conditions, or pretrial detention. The reform aimed to detain defendants who actually pose risk and release those who do not — regardless of ability to pay.

This post walks through how the NJ system works for someone arrested today: where they’re held, how the PSA works, what release options exist, and what counsel does at the first appearance.

This is general legal information. For specific advice on a NJ arrest or detention, call (201) 943-2445 for an immediate consultation. Same-evening callbacks for arrests are routine.

Where NJ Defendants Are Held Pretrial

After a NJ arrest, the defendant is typically held briefly at the arresting municipal police department’s holding facility for processing — fingerprinting, mugshot, intake paperwork. Within hours to a day, the defendant is transferred to the county jail:

• Bergen County Jail — 150 South River Street, Hackensack
• Hudson County Correctional Facility — 35 Hackensack Avenue, Kearny
• Essex County Correctional Facility — Newark
• Passaic County Jail — Paterson
• Morris County Correctional Facility — Morristown
• Sussex County Jail — Newton

NJ does not generally hold pretrial detainees at the municipal level beyond the initial intake window. Holding cells at police stations are short-term; sustained detention runs through the county facility.

The PSA — Public Safety Assessment

Within hours of arrest, Pretrial Services Programs within each county prepare a Public Safety Assessment scoring the defendant on two axes:

• Risk of new criminal activity (NCA) — 1-6 scale based on age, prior convictions, prior failure-to-appear, and other actuarial inputs
• Risk of failure to appear (FTA) — 1-6 scale on similar inputs
• New violent criminal activity (NVCA) flag — yes/no based on prior violent convictions

The PSA produces a recommendation matrix:

• Release on Recognizance (ROR) — for low-risk scores
• Release with non-monetary conditions — pretrial monitoring, electronic monitoring, no-contact orders, curfews
• Detention — for high-risk scores, particularly with the NVCA flag

The PSA is a recommendation, not a binding outcome. The court makes the final detention decision.

Central Judicial Processing (CJP) — First Appearance

Within 48 hours of arrest, the defendant has a first appearance under R. 3:4-2 at the Bergen County Justice Center (or other county equivalent) before a Superior Court judge. At first appearance:

• The complaint is read
• The defendant is informed of charges
• Counsel is appointed (or the defendant’s retained counsel appears)
• The PSA recommendation is considered
• A pretrial release decision is made

Counsel’s role at first appearance is critical. The first appearance sets the procedural posture for the entire matter — pretrial detention vs. release, the specific conditions, the next-court date.

Detention Hearings — N.J.S.A. 2A:162-19

Where the State seeks pretrial detention, the matter is set for a detention hearing within 3-5 business days of the prosecutor’s motion. At the detention hearing:

• The State presents evidence justifying detention (typically: the PSA, the police report, the prior record, the nature of the charges)
• The defense presents evidence supporting release (the defendant’s ties to the community, employment, housing, family situation, prior compliance with court process)
• The court applies the N.J.S.A. 2A:162-19 standard: detention is authorized only where no condition or combination of conditions would reasonably assure appearance and protect the community

Detention motions are heavily fact-driven. Counsel’s preparation — gathering employment letters, housing documentation, family witness statements — frequently shifts the outcome.

What Pretrial Release Looks Like

If the court orders release, the conditions vary by risk score and case posture:

• ROR — promise to appear, no other conditions
• Pretrial Monitoring Level 1 — phone-in check-in
• Pretrial Monitoring Level 2 — in-person check-in
• Pretrial Monitoring Level 3 — intensive supervision, often weekly
• Electronic monitoring — GPS ankle monitor
• Home detention — confinement to residence except for work, court, treatment
• No-contact orders — particularly in domestic-violence cases
• Curfews and travel restrictions

Violation of conditions can produce a bench warrant and remand to county jail.

Indictable vs. Non-Indictable Holding

For indictable matters (third-, second-, first-degree crimes), the procedural framework above applies. The defendant is held at the county jail pending detention hearing or release.

For non-indictable matters (DP, PDP, Title 39), pretrial detention is rare — these matters are typically released pending the next municipal-court date with summons issuance rather than warrant.

County Jail vs. State Prison

A common confusion: NJ county jails hold pretrial detainees and post-conviction inmates serving short sentences (typically under 1 year). State prisons hold post-conviction inmates serving longer sentences at facilities operated by the NJ Department of Corrections. A defendant convicted of a third-degree crime with a 3-year prison sentence serves at a state prison; a defendant convicted of a DP serving a 6-month sentence serves at a county jail.

What Counsel Does Right After Arrest

The first hours after arrest are decisive. Effective counsel:

1. Gathers the police report — typically through OPRA or prosecutor discovery
2. Prepares for first appearance — anticipates the PSA recommendation and prepares response
3. Marshals release evidence — employment letters, housing documentation, character witnesses, family contacts
4. Negotiates with the prosecutor — sometimes the State’s detention motion can be resolved at the first-appearance stage with agreed conditions
5. Advises on substantive defense early — the constitutional posture of the stop and search begins shaping the case immediately

Frequently Asked Questions

How long can a NJ defendant be held pretrial without a hearing?

The first appearance happens within 48 hours of arrest. A detention hearing happens within 3-5 business days of a prosecutor’s detention motion.

Is there bail in NJ?

Money bail has been largely eliminated in NJ since 2017. The current system uses risk-assessment-based release on recognizance or with conditions. Money bail still exists in narrow contexts (e.g., extradition matters, certain post-conviction situations).

What’s the difference between county jail and state prison?

County jails hold pretrial detainees and short-sentence inmates (under ~1 year). State prisons hold longer-sentence inmates serving post-conviction time.

Can I post bail to get out?

Generally no — NJ has moved away from money bail. Pretrial release is determined by risk assessment, not financial capacity. (Some narrow exceptions remain.)

What happens if I miss a court date?

Failure to appear (FTA) produces a bench warrant for arrest. The warrant is “active” — meaning any subsequent contact with law enforcement (a routine traffic stop) can trigger re-detention. Counsel can typically lift FTA warrants by motion.

Schedule a Free Consultation

For a free consultation on an arrest or pending detention matter, call (201) 943-2445. Same-evening callbacks are routine.

For deeper background see our criminal defense practice page and John S. Avery’s bio.