writing, archeology, model trains, or motorcycles), look for a community group that services other people with similar interests.
Your geographic location will determine whether or not there are readily accessible groups already ready and waiting for your membership.
Many groups that fall into this category also have single sub-sections for their members looking for a mate, whose special events are excellent places to meet people.
Bus stops, laundromats, libraries, restaurants, bookstores, grocery stores and travel-related places (buses, trains, planes, etc.) all fall within the public place moniker, although there are surely many more to choose from depending on your specific lifestyle.
If money is an issue, think about taking a class without getting credit or look into how old you have to be to receive free classes, since many universities now offer tuition-free options for seniors.
And while you want to take classes that you have a personal or professional interest in, it never hurts to take something you normally wouldn't - if only because you have a hunch the type of person you are looking to meet would take that kind of class Similar to the hobbies and special interests we all have are our political, religious and/or spiritual affiliations.
A note for heterosexual ladies: attending a sporting event with other single friends will surely net you a conversation with a stranger if nothing else since single women are usually in short supply.
Whether you are taking a couple of courses to upgrade, are a full-time university student or are passionate about tole painting, every community both large and small have courses you can take that will not only net you more knowledge but a whole new set of people to meet and interact with.