Since posting the link above, I have been informed that there are many other dog parks which are not very well known or publicized. My understanding is that some communities want to keep the parks low-profile to prevent overuse and abuse of the facilities. Even if you don't see it on the list, there might be one in your city, so ask at the groomers or the obedience classes

Also, that site has a place for you to add your neighborhood dog park to their list!