How is Geographic location code different from locations?

How is Geographic location code different from locations?

Location is the core table which is used to define all the office locations of the organization. All locations are tied to a company and setid. Location is also tied to a department. Geographic location is a US federal concept. This is specific to a State –City code. Locality pay area and law enforcement officer special pay area calculations are noted in this setup. Based on the geographic location code setup the locality pay percentages are calculated and used in US payroll process.