- North West
Koster was named after Bastiaan Hendricus Koster, a native of Rotterdam who in 1860 settled on the farm Kleinfontein on which the town was later established.
On 11 November 1970 the last diamond rush in South Africa took place at Koster. 167 diggers lined up and raced one another to stake their claims.
Koster is a centre of maize production, although other grains, tobacco and citrus fruit are also grown in the district.
On the shores of the Kosterrivier Dam there is a recreational area and a caravan park.
Several large caves can be found in the surrounding hills.
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