How big is a City Block?

A couple of Acres is a lot of land, and I hope this gives you a perspective of just how big they are.

City Blocks differ in size, but the typical square city block reaches 16 or 17 per mile, or 2.21 to 2.50 Acres.

Engineers use a typical city block as 100,000 sq. ft. for calculation estimates, which is about 17 blocks per mile or 2 1/4 acres. 

(A football field is 300 feet by 160 feet, which is 1.1 Acres.)

 

City Blocks per Mile

length of City Block

Square Feet of City Block

Total Acres of City Block

15

352

123,904

2.84

16

330

108,900

2.50

17

311

96,465

2.21

18

293

86,044

1.98

19

278

77,225

1.77

20

264

69,696

1.60

 

Portland Oregon's downtown city block is 68,000, while Chicago's uses a double block size of  217,000. The average city has from 15 to 20 blocks per mile, which range from a 264' to 352' frontage which is usually a square, or about 69,000 to 123,000 sq. ft. or 1.60 to 2.84 Acres