In order to optimize your site, you need to make sure you are including the keywords that you want to rank for multiple times throughout your site. Also, ensure your site has complete and up-to-date contact information, that you’re using appropriate meta tags, and that you include pertinent business information as text—not text on images that Google can’t search.
Next, log into Google AdWords and click “Tools” > “Keyword Planner.” Once you’re on the Keyword Planner menu, click “Search for new keywords using a phrase, website or category.” Complete the form that appears; to start with, search for your type of business and location. For example, if you own a hair salon in Chicago, you would want to enter “hair salon Chicago.”
Make it as easy as possible for users to go from general content to the more specific content they want on your site. Add navigation pages when it makes sense and effectively work these into your internal link structure. Make sure all of the pages on your site are reachable through links, and that they don't require an internal "search" functionality to be found. Link to related pages, where appropriate, to allow users to discover similar content.
Organic results includes a wider range of websites—not just local businesses. While location may still be a factor in the organic results, it is not generally the dominant factor. The main factor is the authority of the website (or the credibility of the site), external links back to the site, the length of time the site has been live, and other considerations. This is why you will often see sites such as Yelp, Angie’s List, and Facebook show up high in search results.