GIS has many facilities that can be useful in various fields, including in e-Government system. This study assesses the implementation of GIS in the e-Government system provided by ninety-one institutions in Indonesia. The assessment was conducted using several criterias. These criterias include GIS availability and accessibility in the first place, GIS facility establishment date, and GIS technology and interactivity. The assessment was also done to check whether or not there is integration between GIS facilities among the institution that has implemented GIS facility. The results of this study show that seventeen of the total assessed official website has implemented GIS facilities. Seven of those websites are only showing a static map, while others are in the form of dynamic GIS facility. It is also identified that there is no integration among the institutions that have implemented GIS facility.