*The centre of the civilization was in Sind and Punjab in undivided India, from this centre, the civilization spread towards all direction.
*In West the last extent is seaboard of South Baluchistan at the Suktagendor which can be called its western border.
*In east Alamagirpur in Uttar Pradesh (District Meerut) can be called its Eastern Border
*In North it extended up to Manda in Jammu & Kashmir and in south it extended up to Bhagvatrav in Narmada Estuary of Gujarat. 
*later at Diamabad (District Ahamed Nagar Maharashtra) was the site where four figurines of Bronze on the bank of Pravara River found. This pushed the civilization's extension in further south. Indus civilization remnants have been discovered from as far south as Mumbai in Maharashtra State.