Local trading feature request

I live in Vancouver, WA, which is a suburb of Portland, OR. I'm mostly interested in local trades, but if I search locally, I can only see people in Vancouver, WA, not Portland, or any of it's other suburbs (Gresham, Hillsboro, Beaverton, Tigard, West Linn, etc...) without changing my location to those cities. Is it possible to include all towns within say 20 - 50 miles of a city so that people in the same metro area can organize trades?