The Ten Largest Health Insurance Funds in Germany: How Many Members Do They Have?
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Many people in Germany wonder which health insurance fund has the most insured members. A recent study provides an overview. It shows which health insurance funds had the most members in 2025.
The study ranks the ten health insurance funds with the most members. In tenth place is AOK NordWest. According to the data, it had a total of 2,224,607 members in 2025. AOK NordWest is primarily active in North Rhine-Westphalia, Lower Saxony and Rhineland-Palatinate.
The figures are from 2025. The study also compares membership numbers with those from 2021. This makes it possible to see how the number of insured persons at the individual funds has developed in recent years. According to the report, the complete results for the remaining places are available in the original source.
In Germany, most people are covered by statutory health insurance. Members can in principle choose their health insurance fund freely and switch when needed. Anyone planning a switch should pay attention to the contribution rate, the benefits and the service. After all, the number of members alone says nothing about the quality of a health insurance fund.
Sources: BASIC thinking
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