During the Ancien regime, to ensure an equitable distribution of royal taxes, cadastres were established.
The cadastres of Montauban (1470-1746) are known under the name of Compoix and include about 30 000 records.
Each records consists of the last name, first names, the urban parish of the city of Montauban, the rating of the register, folios (pagination) and observations.

• Cadastral records kept at the departmental Archives of Tarn et Garonne.