Land area - Country rankings:
The average for 2018 was 650640 sq. km.The highest value was in Russia: 16376870 sq. km and the lowest value was in Gibraltar: 10 sq. km. Below is a chart for all countries where data are available for: Land area.
Land area in sq. km, 2018
(sq. km, Source: Food and Agriculture Organization, TheGlobalEconomy.com)