157 *W in 28 US states/territories and 34 foreign countries
For fun, I looked up the total hotel counts by brand, on the *W website, to see what percent of the total I have stayed at (not perfect, as I've stayed at since-deflagged properties)
Sheraton 62 12.2%
Westin 32 13.6%
Four Points 17 7.0%
Luxury Collection 16 16.3%
Le Meridien 12 10.4%
W 7 10.1%
Aloft 5 4.4%
St Regis 2 4.4%
Element 2 11.8%
1 unclear (Palace Hotel, Copenhagen, since de-flagged)
10.8% overall