For those camping on the cheap, here are some great campsites we found near Castle Rock Beach, NSW.
#10 Partridge VC Rest Area (Southbound)
1 hour 20 minutes (80.8 km) drive from Castle Rock Beach
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              - ✓ Pets Allowed
 - ✓ Free
 - ✓ Toilets
 - ✓ Caravans
 - ✓ Camper Trailers
 - ✓ Phone Reception
 - ✓ Water (Non Drinking)
 - ✓ Telstra 4G
 - ✓ Optus 4G
 
#9 Wanderest Travellers Park
1 hour 25 minutes (70.5 km) drive from Castle Rock Beach
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              - ✓ Pets Allowed
 - ✓ Toilets
 - ✓ Drinking Water
 - ✓ Powered sites
 - ✓ Caravans
 - ✓ Camper Trailers
 - ✓ Car
 - ✓ Showers
 - ✓ Wifi
 - ✓ Phone Reception
 - ✓ Dump Spot
 - ✓ Telstra 4G
 - ✓ Optus 4G
 
#8 Gentlemans Halt Campground
1 hour 59 minutes (69.5 km) drive from Castle Rock Beach
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              - ✓ Free
 - ✓ Toilets
 - ✓ BBQ Areas
 - ✓ Short walk to car
 - ✓ National Parks
 - ✓ Hike in
 - ✓ Phone Reception
 - ✓ Biking
 - ✓ Hiking
 - ✓ Fishing
 - ✓ Optus 4G
 
#7 Twin Beaches campground
5 hours 9 minutes (66.7 km) drive from Castle Rock Beach
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              - ✓ Free
 - ✓ Toilets
 - ✓ BBQ Areas
 - ✓ National Parks
 - ✓ Hike in
 - ✓ Phone Reception
 - ✓ Telstra 4G
 - ✓ Optus 4G
 
#6 Marramarra Creek campground
5 hours 41 minutes (65.6 km) drive from Castle Rock Beach
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              - ✓ Toilets
 - ✓ BBQ Areas
 - ✓ Allotted Site
 - ✓ National Parks
 - ✓ Hike in
 - ✓ Allows fires
 
#5 The Great North Walk Camping Area
- ✓ Free
 - ✓ National Parks
 - ✓ Phone Reception
 - ✓ Walking Trails
 - ✓ Allows fires
 - ✓ Telstra 4G
 - ✓ Optus 4G
 
#4 Colo Meroo
- ✓ Free
 - ✓ Toilets
 - ✓ Allotted Site
 - ✓ National Parks
 - ✓ Phone Reception
 - ✓ Swimming
 - ✓ Allows fires
 - ✓ Telstra 4G
 - ✓ Optus 4G
 
#3 Pindar Cave
Pindar Cave (Brisbane Water National Park), Pindar Walking Track, Wondabyne NSW, Australia Get directions- ✓ Free
 - ✓ National Parks
 - ✓ Hike in
 - ✓ Phone Reception
 - ✓ Water (Non Drinking)
 - ✓ Hiking
 - ✓ Walking Trails
 - ✓ Allows fires
 
#2 Burralow Creek campground and picnic area
- ✓ Free
 - ✓ Toilets
 - ✓ BBQ Areas
 - ✓ Next to car
 - ✓ Camper Trailers
 - ✓ National Parks
 - ✓ Hike in
 - ✓ Phone Reception
 - ✓ Hiking
 - ✓ Walking Trails
 - ✓ 4WD Trails
 - ✓ Allows fires
 - ✓ Optus 4G