CREATE TABLE county_public_safety (county_id DECIMAL, name TEXT, population DECIMAL, police_officers DECIMAL, residents_per_officer DECIMAL, case_burden DECIMAL, crime_rate DECIMAL, police_force TEXT, location TEXT)
CREATE TABLE city (city_id DECIMAL, county_id DECIMAL, name TEXT, white DECIMAL, black DECIMAL, amerindian DECIMAL, asian DECIMAL, multiracial DECIMAL, hispanic DECIMAL)

Which location has the most corresponding counties?
SELECT location FROM county_public_safety GROUP BY location ORDER BY COUNT(*) DESC LIMIT 1
SELECT "location" FROM "county_public_safety" GROUP BY "location" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1