Mier is a Municipality of 4762 inhabitants, placed in the State of Tamaulipas, with a fertility rate of 2.48 children per woman. 29.08% of the population migrated from outside the State of Tamaulipas. 0.31% of the population is indigenous, 0.16% of the inhabitants speak one indigenous language, and 0.02% speak that indigenous language, but not Spanish.86.58% of the inhabitants of Mier are Catholic, 48.30% are economically active and, within this active population, 92.41% are employed. Additionally, 97.41% of the dwellings have piped water and 24.81% have Internet access.
List of Towns and towns in the Municipality of Mier: