Union of South Africa: Map & Borders Over Time

Union of South Africa appears on 3 of the 39 border maps, from 1920 to 1938. Its mapped territory was largest in 1920, at roughly 2.03 million km².

Map of Union of South Africa in 1920 — Border map for 1920. See the world in 1920.

Open 1920 in the interactive map

Territory of Union of South Africa over time

Approximate area on each border map.

Map year	Approx. area	Change
1920	2.03 million km²	–
1930	2.03 million km²	+0%
1938	2.02 million km²	0%

Cities within Union of South Africa in 1920