A Question about Amateur Boxing

I was wondering if 30 is too over the hill to start boxing as an amateur. I have absolutely no desire to go pro or anything but I have always enjoyed watching boxing and have boxed on a few occasions, mainly when I was in my teens so I have been hit (although we were only doing 3-3 minute rounds). I will be moving back to the US and then will try to find a gym but I am not sure if I should just look for sparring or if I can actually compete in amateur contests despite my age. Look forward to responses.