After I had found an online resource with the census reports starting in 1960, I was trying to find the older data as well. However, the online library of the National Statistics Office does not have the earlier census reports, and those few issues of the Statistical Yearbook in there have only few pages available - the recent issues which are completely available don't give any details on older censuses other than the regional aggregates. If I were in Thailand, I could of course visit some of the university libraries in Bangkok which have such old printed books - but since I am only there for vacation annually, I never made it yet to find such a book in a library.
But finally, Google and some luck helped to locate a scanned version of the 1952 Statistical Yearbook at archive.org. Google Books would have many more issues, but all of them only in snippet view, so totally unusable. And in that 1952 issue, several tables show at least partial data from the early censuses.
But finally, Google and some luck helped to locate a scanned version of the 1952 Statistical Yearbook at archive.org. Google Books would have many more issues, but all of them only in snippet view, so totally unusable. And in that 1952 issue, several tables show at least partial data from the early censuses.
- Table A3 - Population by Sex by Changwat, 1929, 1937 and 1947
- Table A4 - Percentual changes of population by region and changwat, 1929, 1937 and 1947
- Table A5 - Population per square km by changwat, 1937 and 1947
- Table A6 - Population and area of Thai Changwats, 1947
- Table A7 - Population and area of Thai Changwats, by Size, 1947
- Table A17 - Population of Municipalities, 1947