Despite recent reports that bike commuting has remained flat nationwide (I remain skeptical) it appears that locally at least that isn't the case. Eric Gilliland points out
Bike commuting rates in DC increased by over 60% between 1990 and 2000.
It's also true that DC area residents aren't driving alone as much as they used to
According to the unfortunately titled “Preliminary Draft Commuter Connections State of the Commute Survey 2007 Survey Technical Report,” the number of those in the region driving by themselves to job locations outside the home was 71 percent, compared with 74.1 percent in the 2004 survey.
This also bucks the national trend
which shows that the number of those driving alone has gone up to 77 percent.
As for biking
Even the number of people riding their bikes or walking has gone up from 2.3 percent to 2.7 percent.
This number may differ from Eric's because it includes walking (so annoying) or it covers a wider area (as you get to the suburbs biking goes down). It's hard to say.
Another significantly less scientific poll shows 7% of DCist readers (As of July 26. 2007) ride their bikes to work. That's encouraging.