Software product families provide an efficient means of reuse between a set of related products. Feature models have been widely adopted in domain requirements capturing and specifying. However, there are still few cases applying software product families to develop geographic services for citizens. This paper presents a framework that uses standard geographic information to model a product line. From this basis, it is possible to reuse different assets building new products easily. We illustrate the use of our framework through a case study that integrates geographic information of two governmental agencies.