Frequency and Rank of Family Names in Peru

Count of family names (surnames, last names) in Peru, from an approximately 7% sample of the adult population.

In Peru, many people are registered as supporters of political parties, and their names are published by the Registro de Organizaciones Políticas.  The lists include a DNI (national identity number) for each person to avoid duplicates. The 1,572,002 people on these lists (excluding the regional movements) represent around 7% of the adult population of Peru.

Their maternal and paternal family names have been sorted and counted. Nearly all of the names have entries for both paternal and maternal names.

These 3,142,561 family names represent 85,395 different names, most of which are infrequent.  The file has been limited to names that occur ten or more times in the sample, which is 12,139 unique names (3,021,655 names, more than 96% of the total).

Each row in the file contains the rank, a percentage of that name in the entire set of 3,142,561 names, a count of the times the name occurs in the sample, and the name. 

There are some names (around 800) in this file that contain a space. In most cases, these are names like "GARCIA DE RUIZ", where RUIZ is the name of the woman's husband.  There are also cases where the name is like "DE LA CRUZ", which is a complete family name.  No attempt has been made to remove the part of names which refer to the husband's name, this could be considered for a later version.