Population Register Centre has published on avoindata.fi website all given names and surnames of Finnish citizens which have more than 50 occurrences in Population Information System as open data.
Given names have been separated into tables of male and female names, where the first table displays occurrences of all given names, the second table displays the occurrences of given name as a first name and the third table displays the occurrences of given name as other than first name. Table of surnames displays the surnames in order of number of occurrences.
Surnames have been extracted from Population Information System in August 2014 and first names in September 2014. The data is available as CSV files and summary of 1000 most popular names of each table are available as PDF files.