As of 2011[update] (prior to the expansion of Chennai Corporation area), Chennai city has a sanctioned strength of 14,000 police personnel. With a population density of 26,903 persons per square kilometre, the city had 1 policeman for every 413 people. The Chennai suburban police had about 4,093 police personnel and a ratio of 1:1,222.[144] In 2010, the crime rate in the city was 169.2 per 100,000 people, as against an average of 341.9 in the 35 major cities of India.[145] In 2011, North Chennai zone had 30 police stations and 3 police out posts, Central Chennai zone had 28 police stations and 3 police out posts, and South Chennai zone had 30 police stations.[146]