Stevens County has a new broadband speed test and map. It's based on the same Open Technology Institute open source code as the Seattle broadband map, and it's launching this month at the Tech Expo in Colville, WA
Here's an open dataset on broadband speed tests. It's from the mLab group, part of New America Foundation's Open Technology Institute. They have an open API, but for demo purposes, I used the web interface to compare Washington broadband speeds to some US and foreign areas that I think are similar.
From 2009 to 2014 Washington had a state broadband office that used a bunch of open data techniques to show where there was broadband internet service available - and where there wasn't. The basic idea was to build an intelligent market for broadband services and minimize the amount of public money needed. We did pretty well in this area but we left a few challenges on the table.