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Over the past sixteen years, Ukraine has seen a reduction in its prison population. At the start of 2010, there were 147,716 people in the penal system; as of 1 January 2026, that figure stood at just 34,925 — a reduction of 76.4%, or 4.2 times. This is the lowest level recorded in the entire post-independence period.
Three distinct phases stand out in the overall trend. The first (2010–2013) saw relative stability, with the population remaining in the range of 147,000–154,000: the Soviet model of mass incarceration retained its grip. The second (2014–2015) brought a sharp decline: in the space of a single year, the figure fell from 126,937 to 73,431 — almost halving. The third (2016–2026) has been characterised by a slow but steady decline against the backdrop of armed conflict.
One important caveat: the sharp drop in 2014–2015 did not result from any humanisation of the criminal justice system. It was driven primarily by the annexation of Crimea and the occupation of parts of Donbas — along with those territories, dozens of penitentiary institutions and thousands of prisoners passed outside Ukraine’s control. Structural changes in sentencing practice are considerably more modest than the headline statistics suggest.
Pre-trial detention centres (PTDCs): a rising share of the prison population
The number of detainees in pre-trial detention centres fell from 38,030 (2010) to 14,554 (2026) — a decrease of 61.7%. However, the trend is uneven: following a decline in 2014–2015, numbers surged in 2016–2019 (reaching 19,510), before resuming their downward trajectory. This pattern reflects the inconsistency of policy on the application of pre-trial detention measures.
The most alarming indicator is the rising proportion of pre-trial detainees: 25.7% in 2010 against 41.7% in 2026. Nearly half of the entire prison population now consists of individuals whose guilt has not been established by a court verdict. This figure significantly exceeds the European average and constitutes direct evidence of systemic failures in upholding the presumption of innocence.
Penal colonies: the sharpest decline
The number of prisoners held in penal colonies fell from 108,187 (2010) to 20,300 (2026) — a drop of 81.2%. Even accounting for territorial losses, the actual reduction is substantial. The military context of 2022–2026, however, introduces a significant distortion: the mass mobilisation of prisoners convicted of minor offences has de facto operated as a mechanism for the unscheduled ‘relief’ of institutions, rather than as evidence of any ideological shift in penal policy.
The absence of independent monitoring in frontline areas makes it impossible to fully verify data concerning individuals transferred to temporary places of detention. The figures presented reflect only that portion of the system under institutional control.
Juvenile detention facilities: near-total disappearance
The most striking trend concerns juveniles: from 1,499 individuals (2010) to just 46 (2023) — a reduction of 96.9% — followed by a slight increase to 71 individuals by 2026. A reduction of this magnitude cannot be explained by territorial losses alone; it reflects a genuine, if uneven, transformation in the approach to juvenile offending, moving towards probationary and restorative practices.
The upturn in 2025–2026 warrants close monitoring: it may signal a change in judicial practice under wartime conditions, or reflect the registration of adolescents from de-occupied territories. In either case, this is a vulnerable group requiring dedicated attention from probation services and human rights organisations.
Conclusions: apparent decarceration
Statistics for 2010–2026 show that Ukraine has moved from being one of the countries with the highest incarceration rates in Europe to one with comparatively low absolute figures. Yet this decarceration effect is largely illusory. It has been driven primarily by the geopolitical catastrophe of 2014 and the mobilisation logic of 2022–2026, rather than by structural reform of the criminal justice system.
From a penological standpoint, three areas remain the most vulnerable: the entrenched practice of excessive pre-trial detention; the absence of independent monitoring of facilities in frontline areas; and the mounting risks facing certain categories of prisoners as institutional infrastructure continues to deteriorate.
