Ghaziabad District was once part of <nowiki>Meerut District</nowiki>, but was split off forming the district with an area of 2550 km Later, <nowiki>Gautam Budh Nagar district</nowiki> was split off as well, reducing the district's size to 1933.3 km. In Sept 2011, 2 tehsils were again split off to form <nowiki>Hapur district</nowiki>. The revised area is 1273 km and revised population is 3,323,241.