Security has globally been recognized as a very critical aspect of national development. This is based on the fact that every aspect of national growth and development is dependent on the level of peace, security and the extent to which citizens feel secured in their various communities in particular and the society at large. Community policing, however, is considered a significant tool and step further towards the achievement of national security through the effective policing of communities and localities. The central idea of this paper is to examine strategies for effective implementation and strengthening of community policing for grassroot development. This paper started with the examining the concept of community policing and then provided an overview of contemporary and emerging strategies for strengthening community policing as a policy in Nigeria. It also discussed the meaning of grassroot development. The paper climaxed by identifying and discussing the strategies for effective implementation and strengthening community policing in Nigeria in relation to grassroot development.