Its total area is 74.59 km2 .
As of May 2015 , the city had an estimated population of 59,635 , and a population density of 800 persons per km2 .
city 's total area is 74.59 km2 .
As of May 2015 , the city had an estimated population of 59,635 , and a population density of 800 persons per km2 .