| Years. | No. of Inhabitants. | |
| 1824— | Hon. J. R. Poinsett, | 6,500,000 |
| 1825— | Humboldt, about, | 7,000,000 |
| 1838— | Report of Commissioner of Chamber of Deputies, | 7,009,120 |
| 1834— | Galvan's Mexican Calendar, | 7,734,292 |
| 1836— | Notices of the states and territories of the Mexican nation, | 7,843,132 |
| 1830— | Mr. Burkhardt- a German author, | 7,996,000 |
| 1842— | An estimate made as the basis for the election of a Congress, (exclusive of Texas,) | 7,015,509 |
In the year 1838, Señor Jose Gomez de la Cortina,—ex-Conde de la Cortina, one of the most enlightened citizens of Mexico, published a carefully prepared essay upon the population of Mexico, in the 1st No. of the Bulletin of the National Institute of Geography and Statistics of the Mexican Republic; and his opinion was that the number of inhabitants greatly exceeded any of the above amounts. By observing the increase of population in different periods of five years, he considered it satisfactorily proved by the Tablas Geographico-politicas, of 1803, that the augmentation, in favorable years, was at the rate 1-4/5 per cent. By applying this ratio to the census of the Tablas, which gave in 1803, 5,764,731 inhabitants, we shall have an increase of about 105,000 yearly; and if we calculate at this rate of augmentation for the 46 intervening years, we find in 1850 an increase of 4,830,000, or a grand total of 10,594,731.
In the year 1842, however, when an estimate was made of a basis of population, upon which to found a call for a Congress to form a new constitution under the plan of Tacubaya, in 23 Departments or States and Territories, exclusive of Texas, the government calculated that there were 7,015,509 inhabitants.
Table or Population in 1842.
| Departments. | Population | |
| Mexico, | 1,389,502 | |
| Jalisco, | 679,311 | |
| Puebla, | 661,902 | |
| Yucatan, | 508,948 | |
| Guanajuato, | 512,606 | |
| Oajaca, | 500,278 | |
| Michoacan, | 497,906 | |
| San Luis Potosi, | 321,840 | |
| Zacatecas, | 273,575 | |
| Vera Cruz, | 254,380 | |
