During World War I, late 1915, Franco-British divisions under the command of French General Maurice Sarrail marched on Paionia Province.
A French Division camped in Goumenissa and built a military hospital, a power station and the famous Fountain in Central Square.

The population exchanges among Greece, Turkey, and Bulgaria after 1923 resulted in the replacement by Greek refugees from East Thrace, Asia Minor and Eastern Rumelia of most of the Slavic and Turkish elements.
Greek Macedonia experienced radical demographic transformations with the arrival of the Pontic Greeks; by 1928, 427 families comprising 1,676 inhabitants arrived from Turkey.
The Slavic-speaking minority in Greek Macedonia, who were referred to by the Greek authorities as “Slavomacedonians”, “Slavophone Greeks” and “Bulgarisants”, were subjected to a gradual assimilation by the Greek majority.
Their numbers were reduced by a large-scale emigration to North America in the 1920s and the 1930s and to Eastern Europe and Yugoslavia following the Greek Civil War (1944–1949).
During World War II Goumenissa and Central Macedonia were occupied (1941–44) by Germany.
During the same time a detachment of the pro-Bulgarian paramilitary organization Ohrana was formed.

In the 1950s there was a massive emigration to the United States, Australia, Canada, West Germany and other Greek cities, mainly to Thessaloniki and Athens.
In the 1980s many civil war refugees were allowed to re-emigrate.
During World War I, late 1915, Franco-British divisions under the command of French General Maurice Sarrail marched on Paionia Province. A French Division camped in Goumenissa and built a military hospital, a power station and the famous Fountain in Central Square.
The population exchanges among Greece, Turkey, and Bulgaria after 1923 resulted in the replacement by Greek refugees from East Thrace, Asia Minor and Eastern Rumelia of most of the Slavic and Turkish elements. Greek Macedonia experienced radical demographic transformations with the arrival of the Pontic Greeks; by 1928, 427 families comprising 1,676 inhabitants arrived from Turkey. The Slavic-speaking minority in Greek Macedonia, who were referred to by the Greek authorities as “Slavomacedonians”, “Slavophone Greeks” and “Bulgarisants”, were subjected to a gradual assimilation by the Greek majority. Their numbers were reduced by a large-scale emigration to North America in the 1920s and the 1930s and to Eastern Europe and Yugoslavia following the Greek Civil War (1944–1949). During World War II Goumenissa and Central Macedonia were occupied (1941–44) by Germany. During the same time a detachment of the pro-Bulgarian paramilitary organization Ohrana was formed.
In the 1950s there was a massive emigration to the United States, Australia, Canada, West Germany and other Greek cities, mainly to Thessaloniki and Athens. In the 1980s many civil war refugees were allowed to re-emigrate.
Goumenissa