The social infrastructure consists of education, health care, science and public administration. Every one of these aspects influences the quality of life and society which reflects in the socioeconomic state of the country. Social infrastructure also influences the economic development of a state. Education, being one of the best ways to increase the competitive advantage of a nation, is also the best way of determining the development level of a country. Improvement of this aspect significantly affects a nation’s position in relation to its counterparts. Croatia invests in education and is also aware of its meaning. Health care also has strong effects on the economy and that is why it is important to take its importance into account. The obvious problems of Croatian health care system are financing, staff and job restriction. Science should be taken more seriously considering all dynamic changes in the field of technology that must be necessary understood, embraced and implemented so that Croatia can follow global trends. Public administration needs crucial improvements since people find it inefficient. These four aspects are necessary for economic growth, therefore, they need to be understood and constantly invested in in order to improve the quality of life and achieve economic development.