Micro, small and medium enterprises (MSMEs) are productive economic enterprises owned by individuals and business entities that meet the criteria as micro-enterprises from the agricultural, fishery, processing industries, handicraft industries and creative industries, the problem that occurs is that there is no regular updating of data. from the sub-district government so that many micro and small business actors have not been recorded thoroughly, with limited data it is certainly difficult for the sub-district government to convey information to micro and small business actors, delays in information also affect the relationship between the sub-district and business actors who are not good . This research was conducted to create and implement a knowledge management system that is equipped with location features so that it can facilitate data collection and knowledge management on micro and small businesses in Rowosari sub-district. This application is made using the PHP programming language and MySQL database. The results of this study indicate that the application of this knowledge management system can make it easier to collect data and manage information and knowledge about micro and small businesses.