Space....look in weird places...our city owned power company has meeting rooms available for the community, so does the hospital, and strange enough the public school transportation building (where the school busses are housed) has meeting rooms. All have different rules for use. Usually you have to work around their schedule and they have rules about you excluding people (like it can't be a club that excludes based on race) and you can't be making money on the meeting but you could collect money for materials or dues...just not an income.
Really look in odd places. The local extension services place I think has rooms and our cattleman's association but I think those you have to rent but if you are not making a profit and are educational it doesn't hurt to ask. Ask the chamber of commerce...they might have a comprehensive list of rooms.
Many of our parks have buildings right at the park with meeting rooms inside the rec center....once again they have rules.