G reen Open Space is part of a city that has a function for protected areas. The green city area including the park and the recreational green area of an area must have a Green Open Space of 30% which consists of Public Green and Private Open Space. The purpose of this study was to evaluate the need for public green open space based on the population as a basis for planning a green open space. while the research method used is quantitative descriptive which aims to describe the need for green open space in the District of Ciledug through simple mathematical calculations and projections of population and using data collection techniques using field observations using closed question questionnaires. The results of the questionnaire will be used as a consideration in providing green open space. The first step that will be recognized in this study is to analyze the existing Green Open Space in accordance with the Minister of Public Works Regulation No. 5 of 2008. The next step is an analysis of the suitability of the Public Green Open Space that is suitable in the study area using overlay and scoring techniques. Based on the results of the analysis, all regions do not meet the needs of the Green Open Space, both the needs based on the population and the area, while some empty spaces can be made into Public Green Open Space. The planning concept that will be implemented is to make the Public Green Open Space a recreation open space so that residents can spend free time in an open space with all available facilities