Where is the largest jurisdiction in the U.S. located?

The largest jurisdiction in the U.S. is indeed located in Los Angeles. This designation is based on the size of its municipal police department, the Los Angeles Police Department (LAPD), which serves a population of over four million people and covers a substantial geographic area. The LAPD operates in one of the most populous cities in the nation, which inherently makes its jurisdiction extensive both in terms of population and geographic scope.

In addition to sheer size, Los Angeles is known for its diverse array of communities and complex public safety needs, which further emphasizes the significance of the LAPD's jurisdiction. The LAPD's role and responsibilities in this vast area are critical to maintaining public order and safety, which is a distinguishing feature of its jurisdiction compared to other cities like New York, Chicago, and Houston, each of which has significant challenges and unique policing needs but does not surpass Los Angeles in terms of overall jurisdiction size.