The paper dealt with the topic of organization, organization and jurisdiction of the counties of the Republic of Croatia. Croatian counties are the primary administrative units of the Republic of Croatia. Since its re-establishment in 1992, Croatia has been divided into 20 counties and the capital city of Zagreb, which has the authority and legal status of both a county and a city (separate from the surrounding Zagreb County). As of 2015, counties are divided into 128 cities and 428 (mostly rural) municipalities. Each county has a county assembly (county assembly) consisting of representatives elected by popular vote in local elections, using proportional representation of party lists, for a four-year term. The Assembly appoints the executive leadership at the county level, approves the annual county budget, manages county property, etc. The Republic of Croatia has made strides in recent years and has begun to catch up with other EU members in the application of electronic business in the counties, especially in the e-services segment, and it is the task of the public administration and the Government of the Republic of Croatia to undertake considerable efforts in order to get as close as possible to the developed countries of the world and the EU.