There are 300,000 to 400,000 Ukrainians living in Poland .
Moldova ( 375,000 ) , Kazakhstan ( about 333,000 ) , Poland ( estimates from 300,000 to 400,000 ) , Argentina ( 300,000 ) , Belarus ( estimates from 250,000 to 300,000 ) , Portugal ( 52,300 ) , Romania ( estimates from 60,000 to 90,000 ) and Slovakia ( 55,000 ) .