In communities throughout Latin America, criminal organizations provide basic order and security. While multidisciplinary research on criminal governance (CG) has illuminated its dynamics in hundreds of site-specific studies, its extent remains understudied. We exploit novel, nationally representative survey data, validated against a compendium of qualitative sources, to estimate CG prevalence in 18 countries, and explore its correlates at multiple levels. Overall, 14% of respondents reported that local criminal groups provide order and/or reduce crime, corresponding to some 77–101 million Latin Americans experiencing CG. Counterintuitively, CG is positively correlated with both respondents’ perceptions of state governance quality and objective measures of local state presence. These descriptive results are consistent with multiple causal pathways, including case-specific findings that state presence—rather than absence—drives criminal governance. We offer suggestions for both more precise data collection on CG itself and, given its pervasiveness, its inclusion in broader research on economic development, demography, and politics.