This pin code is of Sector-3 Defence Colony, Dehradun (uttarakhand. If you want to get your mail, parcel or courier delivered to this particular address Sector-3 Defence Colony, Dehradun (uttarakhand, you will have to mention the correct postal code. You can browse through our website to obtain the postal code of any place or to locate the address of a specific pin code.The pin code of Sector-3 Defence Colony, Dehradun (uttarakhand is 248001 Pin Code of India endeavors to render the correct information of the postal codes of all the states of India.