You really should always call or ask ahead of time. But keep in mind that not all locations allow overnight parking. Just fire up our guides with Google maps and you can see how they all layout on your route. As you are traveling down the road, you may not know the zip code of some odd town coming up.
Over the last few years, we've created guides to the locations for places you may want to find on the road.
Those are great when we need them but sometimes we just want a break and to fill up on supplies. We may not need a pool and all the luxury items that many resorts and KOA parks have. Some us are frugal and don't like paying $25-$70 just to park and sleep. We may only need to stop for some sleep and then get back on the road. Many times we want to get from Point A to Point B without much relaxing on the trip.
We keep expanding our sections on Overnight RV Parking locations so it is time for a roundup.