Local Rules, Global Lessons: How Criminal Governance Shapes Fentanyl Markets in Northern Mexico

By Steven Dudley, et al.

Although traditional synthetic opioid strongholds like the United States and Canada appear to be experiencing a stabilization of their illicit fentanyl market—evidenced by a historic reduction in overdose deaths 1—synthetic opioids continue to expand across the globe, creating widespread health and security concerns. Existing explanations for the rise and stabilization of these markets focus on economic incentives, supply-chain disruption, precursor controls, consumption patterns, and public-health interventions. But the role of organized crime in structuring retail distribution has been largely overlooked. The experience of Mexico’s northern border illustrates that local criminal governance can be a decisive factor in determining where and how new drug markets take root. Fentanyl, for example, has quietly reshaped drug markets in Mexico and upended some widely held assumptions of how larger criminal groups interact with these markets. As local criminal organizations became major producers and exporters of the synthetic opioid to the United States, domestic consumption also emerged in key trafficking corridors. In Tijuana and Mexicali in Baja California, Hermosillo and Nogales in Sonora, and Ciudad Juárez in Chihuahua, the transnational fentanyl economy has taken root locally, generating unprecedented public health and security pressures. This expansion, however, has been uneven, and the criminal actors who control local drug economies are far from monolithic. Across northern Mexico, fragmented local factions—sometimes linked to larger organizations, sometimes operating with considerable autonomy—determine what reaches consumers and under what conditions. Retail fentanyl markets have therefore expanded not simply in response to demand or price signals, but according to thestrategic decisions of local criminal groups. In Baja California, these groups actively promoted fentanyl sales, enabling the market to consolidate. In Sonoran cities and Ciudad Juárez, they restricted distribution, confining consumption to specific user niches.Overall, the impact on the ground has been substantial. The introduction of fentanyl triggered waves of overdose deaths and serious health effects among users. Although there are signs that the crisis may have stabilized in some areas, the risks persist, and the problem remains underestimated in official statistics, limiting the effectiveness of institutional responses that are already ill-equipped to address it. This report aims to provide a deeper understanding of this issue. It examines fentanyl consumption dynamics in the cities mentioned, traces the evolution of the market, and outlines the distribution networks that sustain it. Additionally, it analyzes the models of criminal control over local drug markets and assesses the state’s response to date. A central question running through the analysis is why fentanyl did not spread uniformly across these cities and what role local criminal structures played in that divergence.

Washington DC: Insight Crime, 2026. 66p.