As many folks enjoy country rankings, I have generated a list of countries (Property:P17) ranked by number of coordinates (P625) in Wikidata.  Note this data is from the September 22 database dump.

There are a total of 737,271 coordinates in Wikidata.

Top countries are....

1) US

2) Russia

3) UK

4) China

5) France

6) Ukraine

7) Canada

8) Germany

9) Australia

10) Poland

See the full list (which also has a few items entered for P17 that are not really countries):

Cheers,

Katie (user:aude)