I later leaned on the Web version of the factbook quite a bit for basic country stats in undergrad.
I don’t know of a replacement of comparable quality. Damn good resource. Not that you can necessarily trust a government source, and especially one from an intelligence agency, but most of what it covered wasn’t exactly useful for the kind of propaganda you’d expect the US government to push, so you could expect it to broadly be a sincere attempt at describing reality (it didn’t hurt that it wasn’t a super-widely-known resource outside certain academic disciplines, so lying about e.g. the major exports of Guyana or whatever wouldn’t have much effect anyway, lowering the likelihood that anyone would bother)