The Forest Service has closed all campgrounds in the Inyo National Forest until October 31 (at least). They’ve explained that the developed campgrounds listed below attract large numbers of people and the Forest Service and local communities do not want the risk of spreading COVID.
Mono Lake Ranger District: Obsidian Flat and Saddlebag Trailhead group campgrounds
Mammoth Ranger District: Agnew Meadows and Pumice Flat group campgrounds
Mt. Whitney Ranger District: Lone Pineand Whitney Portal group campgrounds.
Two others are closed because the remote locations do not allow for timely routine cleaning: Grandview (Ancient Bristlecone Pine Forest) and Kennedy Meadows (the one in Sequoia NF off Nine Mile Canyon on 395 – not the one in Stanislaus NF Forest off Sonora Pass).
For Inyo and Mono county campgrounds, contact counties for specific info.
Inyo County Parks and Recreation - 760-873-5577
Mono County Parks and Recreation - 760-932-5440