Seven Hundred and Forty-Nine

Seven hundred and forty-nine people. That is the number of individuals held in Luxembourg's prisons as of 31 January 2025, according to the Council of Europe's annual penal statistics report[1] released this week. It amounts to a prison population rate of 109.8 per 100'000 inhabitants, sitting almost exactly at the European median of 110.

What makes the number remarkable is not the rate itself but how fast it got there. Luxembourg's prison population jumped 20% year-on-year, making it one of the fastest-growing in Europe. After a decade of declining incarceration rates across the continent, Europe appears to be entering a new upward phase following the sharp COVID-era dip, and Luxembourg is accelerating faster than most.

Yesterday I wrote about Schrassig prison's Bloc F renovation[2]. The timing is pointed. 392 people live in a facility originally built for far fewer, and now the Council of Europe's data confirms what anyone walking through those corridors already senses: the system is under pressure.

The profile of Luxembourg's prison population diverges sharply from European norms in several ways. Nearly four in five prisoners, 78.1%, are foreign nationals, compared to a European average of 26%. Almost half, 45%, have yet to receive a final verdict, placing Luxembourg in the "very high" category for pre-trial detention against a European median of 26%. The report cautions that a high pre-trial rate may indicate slow court procedures or an excessive reliance on detention as a precautionary measure rather than as a last resort.

The foreign-national figure reflects a structural reality the Council terms the "European immigration paradox": countries that serve as destination or transit hubs for highly mobile populations tend to bear a disproportionate share of the consequences. Luxembourg, with its cross-border workforce and international population, sits at the extreme end of this pattern. Of those foreign inmates, almost half are EU citizens. 37% hold legal residency status, above the European average of 26%, though the report notes that only 16 of 46 prison administrations even disclose this data, making comparisons fragile.

The offences driving incarceration also paint a distinct picture. Theft-related offences account for 26.2% of sentences, drug offences 16.7%, and homicide 14.1%. The average inmate age is 37, younger than the European median of 39, with 19% between 18 and 25. Only 5.2% are women.

On conditions, Luxembourg performs well. Prisons operate at 78.5 inmates per 100 available places, well below capacity, at a time when nearly a third of European prison systems face overcrowding. Staffing levels and budgets are among the highest on the continent.

The contradiction is clear: Luxembourg has some of Europe's best-resourced prisons and still manages one of its fastest-growing populations. The problem is not capacity. It is what feeds the pipeline. When nearly half the people behind bars have not been convicted, the question is not whether the cells are comfortable but whether they should be occupied at all.