Hi Beth! If you'd like to camp at Manzano Mountains State Park, approximately 30 minutes from 4th of July campground, you can contact the park at (505) 469-7608. Visitation slows as we approach the cooler temps but we are still full at times over the weekends. If you'd like more information about 4th of July, you can try the Cibola National Forest at (505) 346-3900. Enjoy your visit!
What's the fourth of july campground? That's not making sense. I will address the next part of your question... You have listed your question on the website for Manzano Mountains State Park. The high season for this park ends in mid September. After that the traffic in this park slows considerably. You shouldn't have a big problem getting a first-come site in October. It's very unlikely that the park will be full.
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