Enter the population of the largest city and the population of the analyzed city into the Calculator. The calculator will evaluate the Rank Size Rule. 

Rank Size Rule Formula

n = P1/Pn

Variables:

  • n is the Rank Size Rule (rank size)
  • P1 is the population of the largest city
  • Pn is the population of the analyzed city

To calculate Rank Size Rule, divide the population of the largest city by the population of the currently analyzed city.

How to Calculate Rank Size Rule?

The following steps outline how to calculate the Rank Size Rule.


  1. First, determine the population of the largest city. 
  2. Next, determine the population of the analyzed city. 
  3. Next, gather the formula from above = n = P1/Pn.
  4. Finally, calculate the Rank Size Rule.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

population of the largest city = 40000

population of the analyzed city = 30000