mysql and postal code

Hi guys i have a list of users with their postal code,
i was wondering if some on can help with logic behind searching for an area.
for ex.
if a visitor want to know if there are any users in an area "k3k 4k3" I want it return all users with a postal code that starts with "K3K"

Thanks for you help
and happy holidays
Cheers

 

SELECT * FROM table_name WHERE postal_code LIKE 'k3k%';

Code (markup):

 

Thanks man
This will help me