New Hampshire.
Here, 5 of the federal campgrounds, 19%, still take walk-ups of the 27 whose booking the agencies publish. The other 1 publish nothing either way.
See New Hampshire on the mapFirst-come Reservable · every dot is a campground in its place
28 campgrounds
Dolly CoppReservablefrom $3017 hike-in sites3 pull-through sites170 sitesrigs to 45 ft1,260 fthookupsdrinking watertoiletsshowers
Russell Pond CampgroundReservablefrom $305 walk-in sites65 hike-in sites84 sitesrigs to 40 ft1,770 ft466 ft to Russell Pondhookupsdrinking watertoiletsshowers
Campton CampgroundReservablefrom $3058 sitesrigs to 50 ft670 ftdrinking watertoiletsshowers
Hancock Campground (NH)Reservablefrom $308 walk-in sites1 pull-through site54 sites1,140 ft213 ft to East Branch Pemigewasset River
Sugarloaf 2 CampgroundReservablefrom $2433 sitesrigs to 30 ft1,660 ft282 ft to Zealand Riverdrinking water
Sugarloaf 1 CampgroundReservablefrom $2429 sitesrigs to 35 ft1,620 ft287 ft to Zealand Riverdrinking water
Big RockReservablefrom $3016 walk-in sites17 hike-in sites27 sitesrigs to 40 ft1,530 ftdrinking watertoilets
White Ledge CampgroundReservablefrom $3027 sitesrigs to 35 ft740 ft208 ft to streamdrinking water
Waterville CampgroundReservablefrom $2426 sitesrigs to 30 ft1,410 ft398 ft to Mad Riverdrinking water
WildwoodReservablefrom $243 walk-in sites6 hike-in sites25 sitesrigs to 50 ft1,300 ft524 ft to Wild Ammonoosuc Riverdrinking watertoilets
Basin CampgroundReservablefrom $3013 sitesrigs to 40 ft710 ft202 ft to streamdrinking water
Osceola Vista CampgroundReservableSites from $505 pull-through sites12 group sites12 sitesrigs to 40 ft1,660 ft195 ft to West Branch Mad River
Barnes Field CampgroundReservable11 group sites11 sitesrigs to 40 ft1,240 ft11 ft to stream
Cold RiverReservablefrom $248 sitesrigs to 40 ft580 ftdrinking water
Black Mountain CabinReservableSites from $401 site2,460 fttoilets
Doublehead CabinReservableSites from $401 site3,040 fttoilets
Radeke CabinReservableSites from $651 siterigs to 20 ft1,250 fttoilets
Elm Brook Park Rec AreaReservableSites from $604 group sites400 ft398 ft to Hopkinton Lakedrinking watertoilets
Otter Brook Lake Recreation AreaReservableSites from $303 group sites800 ft442 ft to Otter Brooktoilets
Russell-Colbath BarnReservable1 hike-in siterigs to 20 ft1,230 fthookups
Surry Mountain Lake BeachReservableSites from $353 group sites560 fttoiletsCovered BridgeReservablefrom $305 walk-in sites48 sitesrigs to 35 ft840 ft478 ft to Swift Riverdrinking watertoiletsBlackberry Crossing CampgroundFirst-comefrom $30890 ft192 ft to streamdrinking watertoiletsJigger Johnson CampgroundFirst-comefrom $301,220 ft598 ft to Swift RiverUnits in New Hampshire
1 with campgroundsSource: USGS Protected Areas Database of the United States (PAD-US) land units
Source: campground records from RIDB, NPS, USFS EDW and BLM, unified by CAMPANAC, refreshed nightly