Social & Preventive Medicine General 3d00fd1c One PHC should be present in hilly areas for every: March 2013 (e) A 10,000 people B 20,000 people C 30,000 people D 50,000 people High-Yield Explanation Ans. B i.e. 20,000 people One PHC is to cover a population of 20, 000 in hilly/ tribal/ difficult areas and 30, 000 in plain areas.