North of the city, across the Gant Bridge (San Fierro's version of the Golden Gate Bridge), lies the small town of Bayside. South of San Fierro lies the massive Mount Chiliad and the little town of Angel Pine in Whetstone. It is a fictional city based on the real city of San Francisco, California, with the additional references of two Firth of Forth bridges in Scotland, the Forth Bridge and the Forth Road Bridge, the latter being made to also resemble the San Francisco-Oakland Bay Bridge in both design and physical location. San Fierro is the smallest city in San Andreas, situated on a peninsula in the western portion of the state. One can find many cactus and desert trees here. The fourth and final region (Bone County and Las Venturas) is an arid climate, with the terrain being high elevated deserts with natural formations such as El Castillo del Diablo and government buildings such as The Big Ear and Area 69. Bayside is meant to represent affluent Sausalito, while the areas outside it seem to represent Redwood forest areas outside the San Francisco Bay Area. The third area, Tierra Robada and Bayside, is semi-arid and partly forest-like. The terrain here is also forest-like, with many rugged hills and boasting Mount Chiliad. The second region (San Fierro and Whetstone) is mostly cool, and in San Fierro is foggy. The weather in this region is very warm, and in Los Santos, it can get very smoggy. The first region (Los Santos, Flint, and Red Counties) is mainly made up of forests (with the area directly north of Los Santos meant to be a loose representation of the Angeles National Forest) and some creeks and small towns (representing the San Fernando Valley). San Andreas has a very diverse climate and terrain.

The state is divided into three cities and five counties, the cities of Los Santos, San Fierro and Las Venturas, and the counties of Red County, Flint County, Whetstone, Tierra Robada and Bone County. Unlike the State of Liberty or the State of Florida, much of San Andreas is completely accessible to the player. San Andreas is estimated to be 36 square kilometers in size (13.9 square miles). San Andreas appears to be comprised entirely of islands as the state is surrounded by water, however, several maps throughout the state depict the northern regions ( Tierra Robada and Bone County) connecting to the mainland. San Andreas is a fictional state in Grand Theft Auto: San Andreas, based on the real states of California, Nevada, Arizona, Wyoming and Oregon.

Gta sa restricted area