Yes, there are many ways to find a mill/sawyer in your area.
One is the forestryforum.com, they have a "find a sawyer" option.
Also, you could try
www.woodfinder.com As mentioned, you can try contacting sawmill manufacturers. One that has a "find a sawyer" option is woodmizer. Go to woodmizer.com and get their 800 number. Call them and select "find a sawyer" from their options. You should get real live person to talk to. Tell them your zip code and they will get/give you a list of sawyers in your general area. You'll have to call each one of them and see what they have to offer.
Good luck with your search.
Jim Rogers