Limited data exist on cancer screening in carceral facilities. This study evaluates the feasibility and outcomes of a population-based lung cancer screening initiative in a carceral setting. This is a retrospective review of a lung cancer screening event at the Rhode Island Department of Corrections. Sentenced individuals meeting U.S. Preventive Services Task Force age criteria for lung cancer screening were mailed a letter asking about their smoking history. Low-dose computed tomography (LDCT) scans were offered to individuals who responded and met the criteria. Retrospective analyses examined patients' LDCT scoring using the American College of Radiology's Lung CT Screening Reporting and Data System (Lung-RADS v1.1). Among more than 2,000 incarcerated individuals, 282 met the age criteria and 117 (41.5%) replied with interest in screening, of whom 57 (48.7%) verified as eligible. All 57 (100%) received LDCT. Most scans (94.4%) were categorized as Lung-RADS 1 or 2, indicating negative or benign findings. Comparisons with general population estimates showed no significant differences in Lung-RADS scores. The screening identified 21 incidental findings, including aortic aneurysms and severe coronary artery calcification. The implementation of lung cancer screening in a carceral setting was shown to be feasible and accepted by the incarcerated population.