Finding a long-term, month-to-month type RV site?

One of the first things the park will ask you, is how long is your rig? Hopefully you'll have an idea as to about how long of an RV you will be getting, so you can help them find the right spot for you. You can do a Google Maps search for RV parks, or use the Good Sam's trip planner tool, or RV Trip Wizard. They will have links to websites for the parks in your area, and you can look at those to find the parks that offer long term rates.