Call the closest professional opera company in your area. These companies usually are located in a major city. Inquire about community groups they're familiar with, and ask for contact information.
Make a similar call to local theater groups in your area. Art communities often are tight-knit and know about different opportunities within the local arts scene.
Call the National Opera Association, a Texas-based group that strives for "greater appreciation of opera and music theatre." The phone number for headquarters is 806-651-2857. Inquire about state or local chapters and for a list of opera-based groups in your area. Make a similar call to Opera America, a New York City-based group for opera professionals and aficionados alike. Opera America's contact number is 212-796-8620.
Research opera groups online in your area. As opera groups may be scarce, expand your search to a general region, rather than a specific town. For example, if in New Jersey, search for "South Jersey opera groups."
Use online meet-up or social sites to find opera groups in your region.
Contact the person in charge of the opera group by phone or email and express your interest in joining. Inquire if there are any requirements, such as a certain musical aptitude or an audition, and if there is a cost associated.
Ask if you can attend a session to see if your interest and abilities match with the group. If you decide to join, complete the necessary steps as dictated by the opera singing group.