How to Look Up Bronx County Jail Population Data
The official source for Bronx-related jail population data is the NYC Department of Correction, reported through the Mayor's Management Report. DOC operates the city jail system, so the population that includes Bronx detainees is measured citywide. The FY2026 Preliminary Mayor's Management Report is the most current dataset, with average daily population, admissions, capacity, mental-health indicators, and safety measures.
To read the data, look for the DOC section of the management report, which publishes the figures DOC reports to the city. The report updates on the city's fiscal cycle, so the first-four-month figures are the freshest snapshot. This page is population data, not an individual-inmate locator; to find a specific person in custody, use the Bronx inmate records page and the DOC Person in Custody Lookup.
Why Bronx Population Data Is Citywide
The Bronx has no county-operated jail. People arrested in the Bronx and held after arraignment go into NYC DOC custody. The FY2026 PMMR states DOC operates eight jail facilities, all on Rikers Island, plus court holding facilities in each borough and two hospital prison wards. Because of this structure, no Bronx-only population census exists; the borough's detainees are counted within the citywide system.
| Facility Group | Detail |
|---|---|
| NYC DOC jail system | Reached 93% of capacity in the first four months of FY2026 |
| Rikers Island facilities | Eight jail facilities, all on Rikers Island |
| Borough court holding | Holding facilities in each borough, including the Bronx, for court production |
| Bronx-specific jail | None; Bronx detainees are in the NYC DOC system |
Average Daily Population
Average daily population, or ADP, is the core measure of how many people are in custody on a typical day. The FY2026 PMMR reports ADP rose nearly 13 percent, from 6,478 in the first four months of FY2025 to 7,305 in the first four months of FY2026. DOC attributes the pressure to facility consolidation, admissions outpacing discharges, and longer lengths of stay compared with pre-COVID patterns.
This growth matters for Bronx residents because higher ADP and capacity strain affect housing, transfers, and court production across the system, including Bronx detainees held pretrial. The number is citywide, but it reflects the same jails where Bronx cases are held.
Five-Year Population Trends
The management report tracks DOC indicators across fiscal years, which shows the direction of the system rather than a single snapshot. The table below pulls the FY2026 PMMR figures for admissions, ADP, mental-health share, and capacity.
| Indicator | FY2023 | FY2024 | FY2025 | FY2026 (first 4 mo.) |
|---|---|---|---|---|
| Admissions | 21,691 | 23,035 | 24,210 | 8,584 |
| Average daily population | 5,873 | 6,206 | 6,823 | 7,305 |
| Security Risk Group % of ADP | 14.2% | 10.9% | 9.3% | 8.8% |
| Serious mental-health diagnosis % ADP | 18.9% | 20.3% | 20.7% | 22.0% |
| Population as % of capacity | 79% | 87% | 92% | 93% |
Admissions in the first four months of FY2026 reached 8,584, up over five percent from 8,135 in the same FY2025 period.
Capacity Pressure in the NYC Jail System
Capacity is the share of available beds in use. The FY2026 PMMR reports the system reached 93 percent of capacity in the first four months of FY2026, which DOC describes as the highest level since FY2011. DOC ties the pressure to closing or consolidating outdated facilities, admissions outpacing discharges, and longer lengths of stay.
High occupancy increases the difficulty of classification, separation orders, and bed assignment, all of which affect where a Bronx detainee is housed. The capacity figure is a leading reason the system feels crowded even when the raw ADP is below historical peaks.
Note: The 93 percent capacity figure is citywide, the highest since FY2011, and reflects the jails that hold Bronx pretrial detainees.
Admissions and Length of Stay
Admissions count how many people enter custody, while length of stay measures how long they remain. The FY2026 PMMR reports 8,584 admissions in the first four months of FY2026, up from 8,135 in the same FY2025 period. Annual admissions climbed from 21,691 in FY2023 to 24,210 in FY2025. DOC says longer lengths of stay, compared with pre-COVID patterns, are a key reason the population keeps rising even as some indicators improve.
The two figures interact. When admissions outpace discharges and stays lengthen, the ADP grows even if the daily intake looks steady. For Bronx pretrial detainees, a longer average stay often tracks with court delays, since a person held before trial stays in custody until the case resolves or bail changes.
Pretrial and Sentenced Population
The NYC jail system holds a large pretrial population. Most people in DOC custody, including Bronx detainees, are held before trial rather than serving a sentence, because people sentenced to longer terms move to state prison under DOCCS. City jail sentences are generally shorter, so the daily census skews toward people awaiting case resolution.
| Population Type | Where Held | Typical Stage |
|---|---|---|
| Pretrial detainees | NYC DOC (Rikers) | Held pending case resolution or bail |
| City-sentenced | NYC DOC | Shorter sentences served locally |
| State-sentenced | NYS DOCCS | Longer sentences after conviction |
This split is why court timing matters so much for the city census; faster case resolution reduces the pretrial share that drives ADP.
Mental Health Indicators
Mental-health data is a large part of the DOC population picture. The FY2026 PMMR reports that 59 percent of the average daily population in the first four months of FY2026 was eligible for specialized mental-health discharge procedures, and 22.0 percent of ADP had a serious mental-health diagnosis. Both figures rose over the prior years in the trend table.
These numbers support a broader point about discharge planning. With a majority of the population eligible for specialized discharge procedures, the next court date, treatment referral, and reentry plan matter as much as the bed count. The Bronx inmate records page covers how programs and discharge planning fit into custody.
Safety and Program Indicators
The management report also tracks violence, injuries, and programming. In the first four months of FY2026, violent incidents among individuals in custody decreased 14 percent to 94.9 monthly incidents per 1,000 ADP, and serious injuries from violent incidents decreased 16 percent to 11.9 per month per 1,000 ADP. Serious staff injuries from assaults decreased 68 percent to three injuries in that period.
On programming, scheduled clinic encounters increased 22 percent to 272,442, overall program participation rose to 14.8 percent, average daily school attendance increased 28 percent, and post-secondary education enrollments rose to 83. DOC says it offers anger management, parenting skills, workforce development, vocational training, education, social services, and substance-use treatment.
These safety and program figures matter because a rising population does not automatically mean rising violence. The FY2026 report shows several harm indicators falling even as ADP climbed, which DOC presents as a sign that programming and health services are reaching more people in custody. For families of Bronx detainees, the program data signals what services may be available during a stay.
National and State Context
City jail population should be read against state and national jail trends. Jail population data nationally is compiled by the Bureau of Justice Statistics, which reports county and city jail counts across the country, while research groups such as the Vera Institute study local incarceration rates. These sources give context for whether the NYC system is high or low relative to peers.
Because the NYC figure is citywide rather than per-county, a direct Bronx-versus-state-versus-national rate per 100,000 is not published as a clean Bronx number. The honest comparison is system-level: the NYC DOC ADP and capacity figures are city data, and national context comes from BJS and Vera rather than from a Bronx-specific census.
Population Trends Over Time
The direction of the data is upward in recent years. ADP grew from 5,873 in FY2023 to 7,305 in the first four months of FY2026, and capacity occupied climbed from 79 percent to 93 percent across the same window. DOC frames the increase as the combined result of consolidation, admissions outpacing discharges, and longer stays.
For people following Bronx cases, the trend explains practical effects: more crowding, tighter bed assignment, and the importance of court timing for anyone held pretrial. The Bronx court dockets page covers how to track an upcoming appearance that can affect custody.
Searching for Bronx Inmate Records by Name
This page is population data, not a name search. To find whether a specific person is in custody, use the NYC DOC Person in Custody Lookup, which shows current city custody and basic case information. Name-based lookups belong on the Bronx inmate records page, and release verification belongs on the released inmates page.
Where the Data Comes From
All of the population figures here come from the NYC Department of Correction as reported in the FY2026 Preliminary Mayor's Management Report. The report is the city's official performance dataset and is the right citation for ADP, admissions, capacity, mental-health, safety, and program indicators. National and state context comes from the Bureau of Justice Statistics and the Vera Institute.
Because the data is citywide, none of the figures are Bronx-only. They describe the jail system that holds Bronx detainees, which is the closest official measure available for Bronx County jail population.