For those camping on the cheap, here are some great campsites we found near The Entrance. 
                #9 Branxton Park
1 hour 10 minutes (106.2 km) drive from The Entrance
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              - ✓ Pets Allowed
 - ✓ Free
 - ✓ Toilets
 - ✓ Drinking Water
 - ✓ Caravans
 - ✓ Camper Trailers
 - ✓ Phone Reception
 - ✓ Dump Spot
 - ✓ Telstra 4G
 - ✓ Optus 4G
 
#8 Watagan Headquarters
1 hour 7 minutes (63.7 km) drive from The Entrance
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              - ✓ Pets Allowed
 - ✓ Free
 - ✓ Toilets
 - ✓ Caravans
 - ✓ Camper Trailers
 - ✓ State Forest
 - ✓ Phone Reception
 - ✓ Hiking
 - ✓ Walking Trails
 - ✓ Telstra 4G
 - ✓ Optus 4G
 
#7 Gentlemans Halt campground
55 minutes (61.8 km) drive from The Entrance
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              - ✓ Free
 - ✓ Toilets
 - ✓ BBQ Areas
 - ✓ National Parks
 - ✓ Hike in
 - ✓ Phone Reception
 - ✓ Fishing
 - ✓ Walking Trails
 - ✓ Swimming
 - ✓ Allows fires
 - ✓ Telstra 4G
 - ✓ Optus 4G
 
#6 Turpentine Camping Area
1 hour 3 minutes (60.4 km) drive from The Entrance
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              - ✓ Pets Allowed
 - ✓ Free
 - ✓ Camper Trailers
 - ✓ State Forest
 - ✓ Phone Reception
 - ✓ 4WD Trails
 - ✓ Allows fires
 - ✓ Telstra 4G
 
#5 Casuarina
1 hour 2 minutes (60 km) drive from The Entrance
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              - ✓ Pets Allowed
 - ✓ Free
 - ✓ Toilets
 - ✓ BBQ Areas
 - ✓ Next to car
 - ✓ Caravans
 - ✓ Camper Trailers
 - ✓ State Forest
 - ✓ Car
 - ✓ Phone Reception
 - ✓ Water (Non Drinking)
 - ✓ Walking Trails
 - ✓ 4WD Trails
 - ✓ Allows fires
 - ✓ Telstra 4G
 
#4 The Pines Camping Area
1 hour 4 minutes (59.8 km) drive from The Entrance
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              - ✓ Pets Allowed
 - ✓ Free
 - ✓ Toilets
 - ✓ Next to car
 - ✓ Caravans
 - ✓ Camper Trailers
 - ✓ State Forest
 - ✓ Car
 - ✓ Phone Reception
 - ✓ Garbage
 - ✓ Walking Trails
 - ✓ Allows fires
 - ✓ Telstra 4G
 
#3 Bangalow campground
1 hour 5 minutes (59 km) drive from The Entrance
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              - ✓ Free
 - ✓ Toilets
 - ✓ BBQ Areas
 - ✓ National Parks
 - ✓ Phone Reception
 - ✓ Telstra 4G
 
#2 Ten Mile Hollow campground
Donnys Track, Upper Mangrove, New South Wales1 hour 11 minutes (52.7 km) drive from The Entrance
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              - ✓ Free
 - ✓ Toilets
 - ✓ BBQ Areas
 - ✓ National Parks
 - ✓ Hike in
 - ✓ Phone Reception
 - ✓ 4WD Trails
 - ✓ Allows fires
 - ✓ Telstra 4G
 - ✓ Optus 4G
 
#1 The Great North Walk Camping Area
34 minutes (25.5 km) drive from The Entrance
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              - ✓ Free
 - ✓ National Parks
 - ✓ Phone Reception
 - ✓ Walking Trails
 - ✓ Allows fires
 - ✓ Telstra 4G
 - ✓ Optus 4G