Including city names in all website title tags seems to have impact on Google Maps ranking. The title tag is as almost as critical for local rankings as it is for web search rankings. Therefore, including city names in all or most website title tags helps in Google Maps SEO. Of course, including multiple city names in all title tags works only in non-competitive market. If it’s a competitive market, I recommend you to include one only city name that your physical location belongs to. This is a good way to target geo-based keyword such as “DUI attorney [city name] [state name]“.
For other local search, visit our Google Maps Algorithm page, Google Maps Optimization (Google Maps SEO) page, Live Search Map and Yahoo Local page.