Bitly is committed to keeping our users safe and secure. Any time there are fewer than 5 clicks from a single city, those clicks are combined into the "All other cities" category. This way, no individual can be identified or located based clicking a Bitly link.
If you see 20 clicks from "All other cities," this could mean there were 5 cities with 4 clicks each or 20 cities with 1 click each or anywhere in between. Keep this in mind when analyzing your data.
You may also see "No city data" or "No country data" in your click metrics. Check out our article on those categories to learn more.