From what I find, it's not all cities, tho, at least at this point anyway. Just the ones who applied and were accepted into the "Smart City Challenge" in Dec 2015. For N America, there's 13 in the US, 3 in Canada. I was reading about Austin's "application" yesterday.
FYI -That link copies with a space in it (before the c40.org) which breaks it.
globalcovenantofmayors.org/ourcities/ c40.org/ourcities/
This link might yield better results.
https://www.c40.org/cities/
From what I find, it's not all cities, tho, at least at this point anyway. Just the ones who applied and were accepted into the "Smart City Challenge" in Dec 2015. For N America, there's 13 in the US, 3 in Canada. I was reading about Austin's "application" yesterday.
https://www.transportation.gov/smartcity
https://blogs.scientificamerican.com/plugged-in/austin-texas-as-a-model-smart-city/