After World War I the village was occupied by Romanian forces for a short period and, as stipulated by the Treaty of Trianon, part of the lands of Csanádpalota were given to Romania. Internal Hungarian restructuring immediately following Trianon led to the reapportionment of land such that outlying areas of the village Nagylak were given to Csanádpalota to increase its size. The village belonged for short periods to several Hungarian counties (Csanád, Arad, and Torontál) before eventually being annexed by Csongrád County. During the period of redistricting, several flour mills and cooperatives were established within the village and in 1937 it received electricity. The major employers of citizens of the village at this time were the Blaskovics Manor and the Nagylak Hemp Factory. During the late thirties, farmers from Makó introduced onion cultivation to Csanádpalota.