If you are looking to expand your business in terms of the locations you target your products and service at, then you should consider including this in your online marketing strategy. The beauty of the internet is that people from all over the world can find your website through search engine websites and can purchase off you no matter how far away they are (if your site allows this).
If you are looking to expand in to other areas then you will need to ensure you have the correct level of highly optimised content on your site in order to allow you to compete for top positions on the search engines.
Locations pages are a great way to get you seen in new areas. Adding additional pages along the footer of your site for specific locations allows you to target the content very specifically for that area and therefore increases your chances of being found on Google, Bing and Yahoo for example.