{"metric":"prison_population_by_establishment","title":"Prison population by establishment","topic":"crime","unit":"people","measure_type":"stock","geography":"K04000001","comparison_method":"previous_period","latest":{"period_start":"2026-07-01","period_end":"2026-07-31","period_label":"July 2026","value":86267,"status":"final","vintage":"2026-08-10"},"source":{"publisher":"Ministry of Justice","publication":"Prison population: monthly bulletin","landing_url":"https://www.gov.uk/government/publications/prison-population-monthly-prison-figures-2026","sheet":"MonthlyBulletin","table":"Monthly Bulletin","row":"Total","column":"Population *","raw_value":"86267","file_url":"https://assets.publishing.service.gov.uk/media/6a79a4e37349adb729babe67/prison-pop-july-2026.ODS","file_sha256":"3fa36fb19b9aa597da0c73a984d0a08f90ac119010973b2e23b1bfba52640d4c","release_date":"2026-08-10","release_label":"July 2026"},"definition":"The number of prisoners held in each establishment in England and Wales on the last working Monday of the month, from the Ministry of Justice's monthly population bulletin.","does_not_measure":"Certified normal accommodation or operational capacity (published alongside but not extracted), or people on authorised absence separately from the population.","links":{"page":"/crime/prison-population-by-establishment","series":"/api/metrics/prison_population_by_establishment/series","vintages":"/api/metrics/prison_population_by_establishment/vintages"}}