Do INTJ’s have a higher rate of divorce?

It’s probably more that they have a lower rate of marriage AND divorce. INTJ anecdotal collations suggest most INTJs are more careful about their selection of partners, more so than many other types. They are less likely – I would expect – to marry early (due to social problems earlier in life), or to jump into marriage without considerable deliberation on the pros and cons. They’re also very unlikely to marry due to peer or family pressure because as we know, INTJs typically care less about peer pressure and social expectations than their own internal validation mechanisms.