Here, find this for you (and more websites - don't want to copy it all) :
"Dental hygienist's payroll statistics
In May 2010, according to the Bureau of Labor Statistics, the average annual salary of a dental hygienist was $68,680. Income minimum 10% average annual income of $45000, middle 50% average annual salary of $68250, while working in a dental hygienist, the top 10% of the average annual income of $93820. Alaska is the highest-paid state with an average annual salary of $90,740. California followed suit, with Washington state, the district of Columbia and Nevada completing the top five, each paying one each year.
A chart can also be found on the site.
From the second link below (and more iinfo, this is a snippet) :
"Employment prospects for dental hygienists:
According to the Bureau of Labor Statistics, the growth rate of oral health will be much faster in the next decade than in other sectors. While job competition may be high in some areas, employment prospects are generally favorable. Since many dental care positions are part-time, health workers often work in a dental clinic. Experienced dental hygienists make an average annual salary of about $67,000.
There are also job search tools on the site. Get in your position and see where you are, or where you want to be.
By the way, good luck in your career.
