in the arazona desert
It is located more or less on the ill-defined border between the Mojave Desert and the Great Basin Desert.
There is no Area 51, but their is an Area 69 that takes up most of the desert known as the "Restricted Area".
Somewhere in Nevada desert
The coordinates 26°N, 51°E correspond to a location in Saudi Arabia. This area is situated in the eastern part of the country, close to the Persian Gulf. It is predominantly desert, with the nearest major city being Al Khobar.
Area 51 is known as "Area 69" in GTA San Andreas. It is situated in the Bone County desert area, next to the Verdant Meadows disused airstrip. If you are getting to this area through ILLEGAL means: Use a chopper and get it land inside the area and get out of the helicopter. If you are getting to this area through LEGAL means: There is no legal means ,but there is a mission by which you can easily enter the area.
Area 51, a highly classified U.S. Air Force facility located in Nevada, covers approximately 2.9 million acres, which is about 4,500 square miles. The base is situated within the Nevada Test and Training Range and is surrounded by vast desert terrain. While the exact boundaries of Area 51 are not publicly detailed, its size is significant compared to many other military installations.
The Gobi desert is situated in China and Mongolia.
Area 51/dreamland Nevade desert USA, Groom lake
They take their name from Area 51, a military base in the desert of southern Nevada.
"Area 51" is a US Air Force testing facility in the Nevada desert about 100 miles northeast of Las Vegas.
Bikaner is called the desert city as it is situated in the middle of Thar desert