To document the current approaches to care coordination among different types of care systems in Minnesota.Observational survey of leaders of most of the care systems in Minnesota that have implemented care coordination.Survey questions about organizational structure, size, and approach to care coordination were sent to the leaders of 42 care systems with a total of 327 primary care clinics.Surveys were completed by leaders at every care system participating in this study (100% response rate); 16 small care systems (each with 1-2 clinics) had a total of 26 primary care clinics, 15 medium care systems (3-9 clinics) had 57 clinics, and 11 large care systems (> 9 clinics) had 244 clinics. The large care systems had larger clinics (clinicians per clinic, 8.6 in large vs 4.3 in small and 5.2 in medium; P = .03) and more clinicians per care coordinator (5.7 vs 3.3 and 4.0; P = .04). They also more frequently included a social worker in their care coordination team: 82% vs 25% of small and 40% of medium care systems (P = .01). However, the services provided and complexity tools used were similar. Nearly all reported addressing both medical and social needs for their complex patients with multiple chronic conditions.Although there are large differences in resources and capabilities between large and small care systems, they were not associated with much difference in the approach taken to care coordination. This map of the care coordination territory in Minnesota has the potential to be valuable to researchers and care system leaders for understanding current implementation trends and directing further evaluations.