How big are the property squares on a monopoly board?

In a standard Monopoly game, each property square is approximately 2.5 inches by 2.5 inches (6.35 cm by 6.35 cm). The squares are arranged on the board in a grid format, with 40 squares total, including properties, railroads, utilities, and other spaces. The exact size may vary slightly depending on the specific edition of the game, but they generally adhere to this dimension.