How do I integrate postal code search? How to integrate number search along with string search in drupal 7?
As of now,I was able to implement string search i.e a user can search via name,place etc but I want to  implement number search so that users can search via postal code, date of birth, etc.
You can use Postal code module to integrate postal code in your site.

Please note at the moment the module only support:

USA, Canada, UK, Germany, France, Italy, Australia, Netherlands, Spain,Denmark, Sweden, Belgium, India, Poland