1. Search Engine Locals- Google, Yahoo, and Bing all have local services to help consumers find the regional xyz store, organization, etc. These results frequently show up first in SERP’s so register an information rich profile at each service, and dominate.

2. Yellowpages.com- Yellow page listings are as plentiful as those infamous yellow books themselves.

3. LinkedIn- Linked in is a social network for business networking and Linkedin profiles also frequently shows up in regional search results.

4. Merchant Circle- Merchant Circle is a directory of local businesses, and their profiles are quickly indexed, and often rank quite well.

5. Service Magic- Servicemagic.com is a paid directory of service industry professionals. While it does cost money they can get you ranked well in local searches.

6. Yelp.com- Yelp.com is a local business directory that allows local people to review area businesses. These pages do very well in regional SEO.

7. Superpages.com- Superpages.com is another yellowpages type services that ranks well particularly in Bing and Yahoo.

8. Kudzu.com- Kudzu.com is a directory for businesses that specializes in regional search their basic profile is free.

9. CitySearch.com- Citysearch is a city by city overview of businesses, events, etc. Does cost money but great SEO results.

10. Local.com- Local.com is a small business directory that ranks well in SERP’s.

Bonus- Localtype.com has an extensive listing of local directories check it out here.