Lion census 2015 has pegged that the empire of the king of jungle is spread over 22,000 sq km — 2,000 sq km in Gir sanctuary and the rest outside.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/expanding-lion-kingdom-shrinking-manpower
[2] http://admin.indiaenvironmentportal.org.in/category/author/himanshu-kaushik
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gujarat
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/gir-sa
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lion
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/amreli-d
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bhavnagar-d
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/endangered-species
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife