1931 Cuba census
The 1931 Cuba census was the twelfth national population census held in the Republic of Cuba. The day used for the census was 21 September 1931. The census revealed a total population of 3,962,344, - an overall increase of 1,073,340 people, and an average increase of 2.61% per year over the 1919 census figure.
Population
Population count by Cuban province:| Provinces | Males | Females | Population | Pp % |
| Pinar del Río | 179,570 | 163,910 | 343,480 | 8.6 |
| Havana | 510,338 | 475,162 | 985,500 | 24.9 |
| Matanzas | 176,358 | 160,761 | 337,119 | 8.5 |
| Santa Clara | 428,976 | 386,436 | 815,412 | 20.6 |
| Camagüey | 235,316 | 171,760 | 408,076 | 10.3 |
| Oriente | 571,062 | 501,695 | 1,072,757 | 27.1 |
 BirthplaceThe number of people living in Cuba who were foreign-born continued to climb in absolute numbers but slightly declined by percentage from the previous census.In 1931, 436,897 people were born outside of Cuba. The totals were as follows. |