Professional archaeologists, depending on their focus, can find a job in various areas. Posts as professional archaeologists are available at state and city level throughout the US. Archaeologists are also employed in national parks, and by private companies to do cultural research management (CRM). If you are more interested in scientific application to archaeology, such as dating, GIS, sourcing, chemical analysis etc, you could find a job in a lab. Conservationists are also part of the archaeological work force, and don’t forget museums also employ a lot of archaeologists. Last but not least, archaeologists can work for NGOs such as the AIA, or go into academia, and get employed by universities.

The demand, as for any other job, is tightly related to the offer, and the current economic condition. As you can see there are a lot of variants to be considered!

Best Wishes.