In a hundred-block system, addresses are plotted out on a grid, where it dictates that the house at point XY is number 100, and the numbers increase sequentially within the same block.

What does 100th block mean?

As Glenfarclas noted, the “100 block” of a street is that portion of a street between two intersecting streets where the house numbers all fall between 100 and 199, and this would be readily understood by most Americans.

What does 300 block of A street mean?

If the number on a building is 312, then that’s the 300 block. If the number is 9616, then that’s the 9600 block.

a (city) block (US): a square area of the (city) surrounded by streets, usually containing several buildings. noun. In most cities in the United States, streets are planned and constructed on a grid, forming “city blocks” which are square or rectangular.