= Brandenburg 1415   = Territorial gains   = Temporary possessions
= Other parts of the Holy Roman Empire   = Duchy of Prussia

= Brandenburg 1524   = Territorial gains in 1614 and 1618

= Brandenburg 1618   = The Great Elector's conquests

= Brandenburg 1688   = Territorial gains   = Territorial loss 1695

= Prussia 1740   = Territorial gains   = Territorial losses
= Other principalities in the Holy Roman Empire

= Prussia 1786   = Territorial gains   = Territorial losses 1795

= Prussia 1797   = Territorial gains   = territorial losses 1805

= Prussia 1805   = Territorial losses 1807

= Prussia 1807   = Territorial gains 1815   = German Confederation

= Prussia 1815   = Territorial gains   = Territorial loss 1857

= Prussia 1865   = Territorial gains 1866
= Other members of the North German Confederation

= Prussia   = Territorial gain 1871   = Other parts of the German Empire

= Prussia   = Territorial gains 1890-1929   = territorial losses 1919-21
= Other German part states

http://www.tacitus.nu/historical-atlas/prussia.htm 

Prussian Empire Surface Area 1866-1919