I'm filling out an ESTA for travel the the US later this year. I've done this before but they've recently added several new fields, including address in home country. Iceland in my case.
The problem is that one of the address fields is 'state/province/region', but there is no valid answer for this in an Icelandic address. We simply do not have any level between municipal and country-wide.
To be clear, I'm not asking for supposition on what I might enter there, please only answers with links to US government sites.