The subject of this study is to present the process of implementing the concept of e-citizen in Poland in the perspective of industry 4.0. In the global world, a significant part of public administration, including local government administration, aims to increase activity using Information and Communication Technology. This process allows introducing more efficient functioning of public administration, especially in the scope of providing services to the citizen. Changes in the functioning of public administration are forced by changes in ICT, in particular by those resulting from the current implementation of the concept of industry 4.0. The result of the research was a description not only the legal bases or development policies of public e-administration, but first and foremost to indicate its practical implementation effects. As part of the practical effects, the study will present examples of the effects of e-administration implementation in the Otwock County. In particular, the attention will be paid to the implementation of elements of computerization of administration by the local authorities, and how it affects local sustainable development.