Croatian Constitution stipulates that the Republic of Croatia government shall be organized on the principle of separation of powers into legislative, executive and judicial branches, but limited by the constitutionally guaranteed right of citizens to local and regional / regional government. Local governments are municipalities and cities, and units of local / regional self-government are counties. The proper organization of the state administration provides effective implementation of laws and bylaws, and in this day requirements for efficiency are created if the single state administration in accordance with European and international standards, which is in the Republic of Croatia devoted great attention. The new regulations introduce some changes in the system of state administration and local self-government individual affairs of state administration decentralized and transferred to the authority of local and regional / regional governments. Scope of local self-government is defined in a manner very close to the so-called. general clause, and at the regional level were separated affairs of state administration and self-government. Changes in the laws of local and regional units were given new tasks in the field of elementary and secondary education, health, social welfare and culture. During the implementation of decentralization opened a series of questions that are still looking for answers, and that slow down further implementation.