In 1913 the district was renamed from Uthai Kalasin to Mueang Kalasin.[1]
Administration
The district is divided into 17 sub-districts (tambons), which are further subdivided into 180 villages (mubans). The town (thesaban mueang) covers the whole tambon Kalasin. There are three townships (thesaban tambons): Nong So covers tambon Lam Pao and parts of Lamkhlong; Na Chan covers tambon Na Chan and parts of Phai and Phu Po; and Huai Pho covers tambon Huai Pho. There are a further 16 tambon administrative organizations (TAO).