Very good answer from Kathy. That'll give you the answer about 99% of the time.
If it doesn't, there are other techniques. There are services--look up "skip tracers" online--that, for a fee, will attempt to track down the owner. They tend to be reasonably successful even if checking tax records doesn't work.
Or--one technique investors use--is simple door-knocking of the neighbors' houses. It's very likely that one or more neighbors knows who owns the property, and knows a lot about the situation. I've done that a number of times, and you'd be amazed how much you can find out not just about the ownership question, but about the history of the property. There's usually at least one person on every block who is kind of the local historian. Usually has lived there a long time, knows everyone, knows the gossip, and likes to talk.
So: First check the tax records, either yourself (they're online in most communities--just search for "_______[city or county name]____ tax assessor") or contact a Realtor, who can pull the same information up. If that doesn't work, try one of the methods I suggested.
Hope that helps.