U.S. Bureau of Labor Statistics, May 2007

Interior Designers
Plan, design, and furnish interiors of residential, commercial, or industrial buildings. Formulate design which is practical, aesthetic, and conducive to intended purposes, such as raising productivity, selling merchandise, or improving life style. May specialize in a particular field, style, or phase of interior design. Exclude "Merchandise Displayers and Window Trimmers"

Number in U.S.: 52,260
Mean Hourly Wage: $24.13
Mean Annual Wage: $50,190

Top Employment Industries: Specialized design service, Architectural and engineering services, Furniture stores, Building material and supplies dealers, Building material and supplies dealers.

Top Paying Industries: Federal government ($71,210), Employment services ($66,610), Management of companies and enterprises ($56,370), Offices of real estate agents and brokers ($55,170), General medical and surgical hospitals ($55,610).

States with highest pay: Michigan, New York, Nevada, Hawaii, Massachusetts

Source: http://www.bls.gov/