In the Republic of Croatia, the number of inhabitants is continuously decreasing due to various causes. Demography is the science that studies population. Therefore, demographic policy becomes a fundamental tool for reviving and stimulating regional development. To begin with, the paper presents a comparison of the main demographic indicators of the last two population censuses. Furthermore, past demographic policies that reflect the state's efforts to face the challenges of unfavorable demographic trends are analyzed in detail. Areas of action and challenges and criticisms of current demographic policies are highlighted. The relationship between demographic policy and regional development is complex and twoway, and understanding this relationship is key to creating effective policies aimed at improving living conditions, economic growth and social cohesion at the regional level, so the impact of demographic policy on regional development was analyzed. and vice versa, the impact of regional development on demographic trends. In the implementation of demographic policies that have stimulated regional development, influences come from different parts of the world and examples of good practice in Finland, Germany, Ireland, Canada and Japan are described. Current demographic policies and strategies are aimed at reversing negative demographic trends and encouraging regional development, and the work analyzes key aspects of current measures and plans with an emphasis on their focus on demographic revitalization and regional development. Finally, the identification of the challenges faced by the implementation of demographic policies in the context of regional development is essential for understanding the obstacles that can hinder the successful implementation of policies aimed at the revitalization of regions, therefore, at the end of the paper, there is a brief overview of challenges and recommendations in the context of demographic policy and regional development in the Republic of Croatia.