Well, in the Netherlands close to a million (out of 16) people follow Tour de France on the NOS (national channel) every day, its about the same for the most important classics. Giro isn't shown, Vuelta only in the weekends and is watched a lot less.
Also, an average of 1.25 million people watched the late night talk show during the Tour (the Avondetappe, night stage), which makes it more popular than the normal talk show that is on the same channel at the same time in the rest of the year.
A significant amount of Dutchies also rather watch Sporza for reasons I cannot understand, a small amount Eurosport.
Compared to the weekly football summaries (most watched sports event in the Netherlands) its not that good, summaries usually score close to 3 million, but are in a more favourable timeslot at night.