Exhibit 21.1 CenterState Banks of Florida, Inc. Form 10-K For Fiscal Year Ended December 31, 2002 Subsidiaries of Registrant First National Bank of Osceola County, organized under the laws of the United States First National Bank of Polk County, organized under the laws of the United States Community National Bank of Pasco County, organized under the laws of the United States CenterState Bank of Florida, organized under the laws of the State of Florida