Demography when

Who used the term demography and when?
In its simplest definition, demography is the scientific study of human populations.
According to Landry (1945), the term demography was first used by the Belgian statistician Achille Guillard in his 1855 publication: Eléments de statistique humaine, ou démographie comparée..
The roots of statistical demography may be found in the work of the Englishman John Graunt; his work Natural and Political Observations . . .
Made upon the Bills of Mortality (1662) examines the weekly records of deaths and baptisms (the “bills of mortality”) dating back to the end of the 16th century._{Sep 19, 2023}

While basic demographic studies, such as censuses, were conducted in the ancient world as far back as 6,000 years ago, demographers as we know them, such as John Graunt from the United Kingdom, came about in the 16th century.

Demography when

Who used the term demography and when?