ghaziabad district was once part of meerut district, but was split off forming the district with an area of 2550 km2 later, gautam budh nagar district was split off as well, reducing the district's size to 1933.3 km2. in sept 2011, 2 tehsils were again split off to form hapur district. the revised area is 1273 km2 and revised population is 3,323,241.