There are 1,200 + campgrounds and dispersed
(aka boondocking) sites in 14 states.

Bureau of Land Management (BLM) campgrounds and dispersed sites may include a variety of facilities, such as restrooms, potable water, electrical hookups, picnic areas, and group shelters. However, many sites do not have all these amenities and may only have a picnic table and fire ring.

https://northeast-truckcampers.org/bureau-of-land-management-camping-sites/

Bureau of Land Management (BLM) campgrounds and dispersed sites may include a variety of facilities, such as restrooms, potable water, electrical hookups, picnic areas, and group shelters. However, many sites do not have all these amenities and may only have a picnic table and fire ring.