RV Site
003
Book site 003
via Recreation.govChecking live availability for this campsite…
We don't quote pricing for this site.
Rates change with season and operator, and our records aren't current enough to publish. For accurate, up-to-date pricing, check the operator directly.
Check current pricing on the operator's reservation pageOfficial sources & verification
Managed by State Park
Source of truth
- Agency source page
The page our published rules and notes are derived from.
Reserve or permit
- Reserve on Recreation.gov
Book a site directly with the operator.
Verify by phone or mail
- Operator:760-376-1815
- Email:sschmidt@goexplorus.com
- Address:PO BOX 1640 · Posey, CA · 93238
Cell reception
Camper reports · checked Sep 29, 2026Major Issues
Average 0.6 of 4 bars · 246 reports across 3 carriers
Phone calls drop frequently; text messages delayed. No data, or mostly unusable data. Signal may be limited to small areas of site/facility. No social media.
Not enough campers have rated this site on its own — this is what they reported for Headquarters Campground as a whole.
Verizon
Major Issues
0.7/4
85 reports
AT&T
Major Issues
0.5/4
83 reports
T-Mobile
No Service
0.4/4
78 reports
Reported by campers on Recreation.gov, not measured by us. Reception varies by handset, weather, and where you stand in the campground. Recreation.gov
Site Details
Loop
A
Features
Other Sites at Headquarters Campground
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Long Meadow Group
Halfway Group Campground
Camp 3 Campground
Camp Three Campground