Later, the ruling Nizams of Hyderabad changed the name to Karimnagar, derived from the name of Shahenshah E Karimnagar Syed Kareemullah Shah Quadrii nithinvasi.

[4] Few mandals were merged into other newly formed districts of Warangal Urban, Siddipet, Jayashankar Bhupalpally.

The district is spread over an area of 2,128 square kilometres (822 sq mi).

Karimnagar has a sex ratio of 993 females per 1000 males and a literacy rate of 69.16%.

[8] The below table categorizes 16 mandals into their respective revenue divisions in the district:[9] Granite industry of the district include, Tan Brown and Maple Red variety of granite.