Hi Sherryl, I'm Bel, the Mexico Correspondent and yes, there are expats living in Mazatlan. Here are a coupld of Facebook groups: Mazatlan Expats and Mazatlan Buy and Sell so you have contacts for those living there right now to answer your questions.
https://www.facebook.com/groups/421874412236301
https://www.facebook.com/groups/498042901476569
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SHERRYLGRIMES
@SHERRYLGRIMES