I had sparrows last year, so I reduced the size of the hole this year hoping to get wrens. Cut a circle out of a plastic lid larger than the original entrance hole. Then trace around a quarter and cut that hole out for your entrance hole. Attach to the front of your bird house with thumb tacks and wait. Also, make sure your birdhouse doesn't have a perch.
House sparrows prefer perches.
I never see any other birds besides sparrows, Doves, Blue Jays, Cardinals, Crows and these black birds that are everywhere. Check out your local chapter of the Audobon society, or any similar group. They could supply you with information on the birds that you have in your area. Also, get in touch with your local native plant society. For attracting birds to your yard, plant native trees, shrubs, groundcovers and flowers.