The growth of so-called hyperlocal media has created new challenges for research, blurring some of the classic boundaries of local journalism and traditional media. In this chapter we try to understand the role hyperlocal media have in the local media ecosystem by focusing on two European countries: Spain and the Netherlands. We present the methodology applied for the study of hyperlocal media in both cases, adapted to their geographical, social and media context. We identify the main characteristics of hyperlocal media in both countries, observing their distribution in the territory, organizational and productive structures, news content and citizen participation. Finally, we propose some keys for the comparative study of hyperlocal media.