The geographic boundaries of a Jana were not defined.

Vedic people used the term Jana to designate a group of people, united under a common bond of singular kinship structure. 

Their settlement was known as ‘Grama’. A cluster of gramas consisting of the same Jana was known by the name of that particular Jana. 

In the beginning, however, the concept of Jana included only an extended family (kul), its settlement (grama), and the cattle pen (goshtha-gotragaulivada). 

The concept of Jana was not yet inclusive of the concept of territoriality. 

Hence, the geographic boundaries of a Jana were not defined.