Must be your area. I am pleased to say that there are pleny of black riders in my area.

PG County in Maryland (and the DC suburbs in general) has one of the most affluent communities of African Americans in the country, so maybe it is an issue of having disposable income.

http://www.washingtonpost.com/wp-dyn...2002Oct19.html

For most people, this (cycling) is a rather expensive endeavor.