However, it's important to note that there is no universal standard for the size of a block, and it can vary significantly from city to city. In some older cities, such as Boston or Philadelphia, blocks may be much shorter, while in newer cities like Los Angeles or Phoenix, blocks can be much longer. Additionally, the term "block" can also be used to refer to a group of buildings or houses that form a cohesive unit, regardless of their size or distance from each other.