Abstract: Although the forty seven counties in Kenya carry the promise of a more equitable model of development, through which effective service delivery and local governance is to be attained, the general public feeling and consensus is that their performance in terms of service provision is dismal. As a result this study sought to review the effects of socio-economic behaviour on service delivery in Nyamira County, in the last three years. The specific objectives were; to identify the effects of role overlap between county and national government staff on service delivery.