The following table shows the change of the population during the last four decades.
Religion According to the latest Bulgarian census of 2011, the religious composition, among those who answered the optional question on religious identification, was the following: A majority of the population of Avren Municipality identify themselves as
Christians. At the 2011 census, 62.3% of respondents identified as
Orthodox Christians belonging to the
Bulgarian Orthodox Church. There is a relatively large
Muslim minority and a large part did not answer. ==See also==