Philadelphia is number one for bicycle commuters:

Among the nation’s ten largest cities, Philadelphia had the highest percentage of commuters who use a bike; higher than New York City, Chicago or Los Angeles. Philadelphia also tied for 10th among the country’s 60 largest cities and the second highest percentage among east coast cities (only Washington DC has a higher percentage).

Philadelphia’s percentage of commuters who bike is nearly three times the national average of 0.55%.

1. Philadelphia 1.6% (6th largest city)
2. San Jose 1.2% (l0th largest city)
3. Chicago – 1.0% (3rd largest city)
4. San Diego 0.9% (9th largest city)
5. Los Angeles – 0.9% (2nd largest city)
6. New York – 0.6% (1st largest city)
7. Phoenix – 0.8% (5th largest city)
8. Houston – 0.4% (4th largest city)
9. Dallas – 0.1% (8th largest city)
10. San Antonio – 0.1% (7th largest city)

National Average – .55%

via Philadelphia Bicycle News: Philadelphia is No. 1 Among Big Cities For Bicycle Commuting.

Now if we can just get the South Street Bridge re-opened ASAP and keep people from riding around the streets on those damned ATVs.