Postal code 2430 covers Kalmakanda, Kalmakanda, Netrakona District, Dhaka Division.
Kalmakanda (Bengali: কলমাকান্দা), originally Karamakhanda, is an upazila of Netrokona District in the Division of Mymensingh, Bangladesh.
Kalmakanda is located at 25.0833°N 90.8917°E / 25.0833; 90.8917. It has 39275 households in total area 377.41 km2. The upazila is bounded by Meghalaya state of India on the north, Barhatta and Netrokona sadar upazilas on the south, Dharmapasha upazila on the east, Durgapur upazila on the west.
According to the 2022 Bangladeshi census, Kalmakanda Upazila had 63,322 households and a population of 271,348. 11.61% of the population were under 5 years of age. Kalmakanda had a literacy rate (age 7 and over) of 63.80%: 64.69% for males and 62.94% for females, and a sex ratio of 97.31 males for 100 females. 11,213 (4.13%) lived in urban areas. The ethnic population was 9,374 (3.45%), of which 6800 were Garo and 2500 Hajong.
Kalmakanda Thana was formed in 1941 and it was turned into an upazila in 1983.
Kalmakanda Upazila is divided into eight union parishads: Barakharpan, Kailati, Kalmakanda, Kharnai, Langura, Nazirpur, Pogla, and Rangchhati. The union parishads are subdivided into 177 mauzas and 347 villages.
Abdul Karim Abbasi was the Member of Parliament for constituency Netrokona-1 from 1991 to 1995 and 2001 until 2006.
Chhabi Biswas has been the Member of Parliament for constituency Netrokona-1 since 2014.
Mustaque Ahmed Ruhi was the Member of Parliament for constituency Netrokona-1 from 2009 until 2014.
Jalal Uddin Talukder was the Member of Parliament for constituency Netrokona-1 from 1996 until 2001.