Grimm has been on NBC since 2011 and it has been getting great ratings. Season one was ranked 89th with just more than 6.3 million viewers each week when the show was on Friday nights at 9PM. The second season was shifted around a little more with the show starting at 10PM on Monday, then moving back to Friday nights at 9PM, with the season ending on Tuesday nights at 10PM.
The ratings were slightly up for that season and moving into the third season, the show stayed on Friday nights at 9PM. That is when it saw the greatest jump in ratings with almost eight million viewers each week.
Season four just ended in May and the ratings are not in yet, but the odds are good that they were up again from the last season, especially the finale. Despite its popularity with fans, the show has only been nominated for three awards, but has yet to win anything.