Jan Piekałkiewicz was born on the 19 September 1892 in Kursk, to a Polish intelligentsia family.
[1] He was an employee of the Central Statistical Office, and was one of the organizers of the Polish census of 1921.
[1] From 1924 to 1939 he lectured in the Main Political School in Warsaw, and published over 50 works on finances, economics (in particular, econometrics) and statistics.
He also ordered the full documentation of the Nazi crimes against ethnic Poles and the Jews.
[1] He supported the studies on the creation of the post-war Polish-German border on Lusatian Neisse and Oder.