What do these websites say about your location?

http://whatismyipaddress.com/ Under the map, look for Location Not Accurate?

http://browserleaks.com/geo

https://whatismyipaddress.com/geolocation

https://html5demos.com/geo/

https://www.iplocation.net/find-ip-address

How to set your location manually in Firefox(Windows) https://support.mozilla.org/en-US/questions/1197142#answer-1115502

This article has more information on how Firefox will determine your location if you give a site permission to access it: Does Firefox share my location with websites? The accuracy depends on whether Google has a record of wi-fi routers your computer lists as being near you.