Article R2214-2 of the French General Code of Local Authorities
The State police system may be established in a commune or in a group of communes forming an urban area when the following two conditions are met: 1° The population of the commune or group of communes, assessed taking into account the size of the seasonal population, is greater than 20,000 inhabitants; 2° The characteristics of delinquency are those of urban areas. It is established by joint order of the…