The Groningen field was at the time it was discovered in 1959 considered to be the largest onshore gas field in the world. The production of gas was initiated a few years after discovery. The first larger induced earthquake took place outside Groningen in 1986 in Assen. The Royal Netherlands Meteorological Institute (KNMI) recorded the first induced earthquake in 1991 in Groningen. Over the last three decades, the number of induced earthquakes in Groningen has steadily increased. However, the number of recorded events was reduced by a half in 2016 due to a decrease in gas production. The largest recorded induced earthquakes in Groningen are the 3.5 and 3.6 magnitude events in 2006 and 2012, respectively. Both events were located close to the village Huizinge. We present an analysis of the recorded induced earthquakes in Groningen. The hypocenter of the events have been estimated. The relationship between the observed seismicity and a geological model of Groningen is studied. Finally, the seismic hazard due to induced earthquakes is presented.