RESEARCH & DEVELOPMENT
By MOCJ Research
NYC Jail Population in Context: Admissions vs. Discharges
Key Data Insights
- From January 1 through July 31, 2026, the jail population decreased in comparison to same period in 2025, with a trend of more discharges than admissions. On average there were 43 more people discharged than admitted each month citywide. This is an average of 7 fewer per borough per month.
- Today, jails discharge about 2,000 people per month, compared with about 3,600 per month in 2018.
Jail Size Driven by Small Monthly Shifts
Jails have a steady population size if the number of people admitted and discharged remain balanced each month. Historically in NYC, these rates have closely tracked each other. Small monthly differentials determine whether the population rises, falls, or stays the same.
Even slight imbalances matter—just 8 more people admitted than discharged per borough per month (out of ~2,000 citywide discharges per month) can increase the average daily jail population by more than 300, as seen in 2024.
On the other hand, an average of 32 fewer people admitted than discharged per borough per month (out of ~3,000 citywide discharges per month) can decrease the jail population by almost 2,000 people, as seen in 2019.
In January 1, 2026 – July 31, 2026, on average, there were 43 fewer people admitted discharged than people admitted each month citywide. This is an average 9 less per borough per month.
Between July 2025 and July 2026, there was a corresponding decrease of 1,026 individuals in jail.
Drivers of Small Monthly Net Shifts
About 90% of the current jail population is made up of people waiting for a decision about their case outcome.
- Opportunities for increasing monthly discharges include diverting eligible people, speeding clinical assessments for appropriate community-based programs or treatment, and speeding case decisions.
- Opportunities for decreasing monthly admissions include reducing crime, increasing immediate connections to programs or treatment, and identifying up front if a case is likely to be dismissed to prevent lengthy waiting time.
- Net changes can also be driven by extraneous factors, such as the state-prison admission backlog in early 2025.
Monthly net changes vary by borough and time periods. In early 2025, most boroughs most months admitted more people than they discharged. In the second half of 2025, most boroughs most months discharged more people than they admitted.
Manhattan data includes cases filed by the Special Narcotics Prosecutor that files everything in Manhattan even if offenses occurred citywide, so those cases are separate from the Manhattan’s District Attorney’s office.
MOCJ’s NYC in Context series brings policy and operational questions into sharper focus by using data to contextualize an issue from multiple angles. Stories evolve over time and may be updated as new trends and insights emerge.