Q. Payment systems internationally?

The World Payments Report is a "source for data, trends and insights on global and regional non-cash payments, the key regulatory and industry initiatives (KRIIs), and today’s dynamic payments environment."  (2016+)

For the USA, also see Survey of Consumer Payment Choice (2008+).  Reports data on consumers' adoption and use of 10 payment instruments as well as consumers' assessment of payment instrument characteristics like cost and security.  The raw data files at USC include additional variables including state of residence.