Staunton Island is the game's version of Manhattan, but its land area is roughly 1.5 km² compared to Manhattan's 59 km² .
The city's design uses verticality and dense street layouts to create an illusion of greater size. Measurement Metric Value Imperial Value ~8.12 km² ~3.14 miles² Land Area ~4.38 km² ~1.69 miles² Water Area ~3.76 km² ~1.45 miles² Real-Life Counterparts & Comparisons
Roughly 16.14 km² , nearly double the size of the original.
The actual New York City land area is about 783 km² , making it roughly 178 times larger than the landmass of GTA 3's Liberty City.
In the original release, heavy fog obscured distant islands, making the world feel like it extended much further than it did.
Vehicle speeds were calibrated so that crossing an island took a significant amount of time, giving the player a sense of "commuting" between districts.