Confluence-Denver.com notes that most north-south blocks in Denver are one-eighth of a mile, while the standard east-west block is one-sixteenth of a mile. Standard downtown blocks are 266 feet by 400 feet.
City Blocks differ in size (see table below), 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.
City Blocks differ in size via kwout
Block sizes matter. Smaller blocks allow more variation in your daily commute and spread out the foot traffic around a city. It also provides a city more intersections which are always ideal places for commercial activity. The end result is a more walk able city and more unique shops and restaurants.
See PostGreenHomes.com's Urban Planning 101 – Block Size to learn more about the concept of city blocks.