You two need to get together and plan a meeting then put posters up advertising it. Be proactive. An article in the local freebie paper helps too. Put the posters on noticeboards in supermarkets, libraries, vets, schools (if you don't do it until school has started again), malls, anywhere you see a noticeboard.
Don't try and wait until you get enough people to hold a meeting, organise the meeting first or it will never go ahead.