I didn't know that they were so prevalent, though I suppose that I shouldn't be surprised; my current energy plan does a wind-offset thing right now.
I'm not sure how accurate the data is but the USGS have a GIS map of turbine locations - http://eerscmap.usgs.gov/windfarm/. This website (http://www.awea.org/resources/statefactsheets.aspx?itemnumbe...) also states that "Every state in the United States has either an operational wind energy project, a wind-related manufacturing facility, or both. Approximately 1,000 utility scale wind projects – which represent 74,512 megawatts (MW) and over 48,800 wind turbines – are installed across 40 U.S. states plus Puerto Rico and Guam. There are also more than 500 wind manufacturing facilities spread across 43 states."
I also caught the start of an interview yesterday about how the state of the national grid is a major limitation in our ability to consume these forms of energy (http://www.npr.org/2016/08/22/490932307/aging-and-unstable-t...). Hopefully our elected official will start working on that problem soon rather than bickering about bathrooms and building walls...