Reserving a Campground in the US: Recreation.gov, State Parks and First-Come Sites Explained

Campgrounds in the most popular US destinations, such as Yosemite and other national parks, can be fully booked months ahead, while thousands of other sites stay available until the day of arrival. Knowing which system runs which campground, and when its calendar opens, is the most useful piece of planning. Recreation.gov, the federal booking site, lists reservable experiences at over 3,600 facilities and 103,000 individual sites, among them national parks, national forests and Bureau of Land Management areas.

State parks, county parks and private campgrounds each work differently, and a trip through several states often means several accounts and booking dates. What follows covers how the windows work, what to expect from first-come sites, how to read hookup and size information, and when to camp without a reservation at all.

How the booking window works

On Recreation.gov most campsites can be booked six months ahead, on a rolling basis: each day the date six months out becomes available, so a first night of 15 July is typically bookable from 15 January. Most campgrounds go on sale at 7 a.m. Pacific, 8 a.m. Mountain or 10 a.m. Eastern time, but not all do, and the Seasons and Fees tab on each campground page gives the exact time. Some locations offer shorter windows in addition to the standard one.

For popular summer campgrounds, being logged in with payment details saved and the clock synchronized at release time makes a difference. Recreation.gov itself advises refreshing at the exact moment and avoiding multiple browser windows, which can trigger repeated verification checks. If a date is full, check again later: cancellations return sites to the pool, often in the final weeks before arrival. A few high-demand permits and events on the same site are assigned by lottery instead of first-come booking, and the permit page explains which applies. Cancellation rules and fees appear at checkout and differ by campground.

State parks and other systems

State park systems are independent, each with its own website and window, from about four months to nearly a year ahead. Figures compiled for 2026 by the booking-alert service Outdoorithm show, for example, about six months in California, five in Texas, nine for Washington State Parks and eleven in Florida. These values change, so the park system’s own page is the one to trust. County and city parks and some private sites use further systems, while some state parks and US Army Corps of Engineers lakes share Recreation.gov. Create the accounts early and note each opening date in a calendar, converted to the park’s local time.

First-come, first-served strategy

Many campgrounds keep some or all sites unreserved, marked first-come, first-served. The method is the same everywhere: arrive early, because departing campers usually leave by late morning and a campground with open sites at 9 a.m. may be full by mid-afternoon; check the host or the board at the entrance for vacancies; and keep a plan B within an hour’s drive. Arriving on a weekday, outside school holidays and in the shoulder season of September and October improves the odds considerably. Some campgrounds switch between reserved and first-come over the year, so the official page for the travel dates decides.

Hookups, site size and private campgrounds

Listings state the electrical service for each site. According to the rental operator Cruise America, a 30-amp service supplies about 3,600 watts and a 50-amp service more than 12,000. Smaller RVs normally use 30 amp, larger motorhomes and fifth wheels 50 amp. A smaller vehicle can plug into a larger outlet with an adapter and will draw only what it is built for. US campground outlets supply 120 volts, so appliances brought from Europe need to be rated for it. Many federal campgrounds have no hookups at all, and a shared dump station and water tap are common instead.

Each listing also gives a maximum vehicle length, and it is a hard limit: a 30-foot (9 m) motorhome does not fit a site marked for 22 feet (6.7 m). Measure the actual vehicle including bumpers, ladders and any towed car, and look at the site photos for pull-through or back-in access and for slope. Private campgrounds, such as those in the KOA (Kampgrounds of America) franchise network, are usually bookable year-round directly with the operator, offer full hookups and often cost more than public sites; they are a sound fallback near a big city or on a busy holiday weekend.

Dispersed camping

Dispersed camping means camping outside developed campgrounds on public land, with no reservation, no hookups and usually no fee. On Bureau of Land Management land a 14-day limit applies to occupying any campsite. Its guidance says not to dig, trench or level a site or cut vegetation, to pack out all refuse, and not to camp near developed sites such as campgrounds, picnic areas and trailheads. Stay on established routes, follow current fire restrictions and use existing fire rings. National forests permit dispersed camping in many areas and publish motor vehicle use maps showing which roads are open to vehicles, but rules differ between forests, and most national parks limit camping to designated sites. Cell coverage is often absent, so water and waste must be carried.

Before you book

A short sequence keeps the process manageable. List the nights that matter most, such as a national park or a lakeside stay, and note the date six months ahead for each. Create accounts on Recreation.gov and on the relevant state systems and save payment details. Measure the vehicle and note whether it needs 30 or 50 amp. Book the anchor nights first and fill the gaps with first-come sites, private campgrounds or dispersed camping, leaving a few flexible nights. Read the cancellation terms at checkout, since fees and deadlines differ, and check the park’s official page for closures and fire restrictions before leaving.

Sources

• Tips for Yosemite Reservations: booking window and release times (Recreation.gov)
• Recreation.gov: reserve camping, tours and permits (U.S. Federal Recreation Lands)
• Dispersed Camping Rules, Bears Ears (Bureau of Land Management)
• RV Electrical Hookups: 30 amp vs 50 amp (Cruise America)
• When Do Campground Reservations Open? 2026 Booking Windows (Outdoorithm)