To ensure you are reaching the entire local audience you are targeting, you must have at least two PPC campaigns set up — one targeted to the geographic area by IP address and another targeted nationally with geocentric keywords. For example, if you are a dentist in Austin, your first campaign (A) would be targeted by IP address to the Austin Metro area and your second campaign (B) would be targeted nationally but will only contain keywords with city, neighborhood, zip code, area code, and regional lingo modifiers. A few examples of keywords for Campaign B might be Austin dentist, Oak Hill dentist, 78749 dentists, 512 dentists, or Central Texas dentist.