 Landscape was flat and hilly in the south, forests covered only 16.6% of the area (with nation's average of 22.2%, as for January 1, 1937).According to the Polish census of 1921 which was the First General Census in the Second Polish Republic following World War I (conducted by the Main Bureau of Statistics, "see originals"), the population of Lublin Voivodeship could be categorized by both location and religious beliefs in the following way.Population breakdown by religious denomination in the 1931 national census