CALL and TALL (Toronto Association of Law Libraries) recently published a joint 2018 salary survey:

This present survey was carried out in the autumn of 2018 and the data collected in November 2018.

The analysis is based on 537 invitees, of whom 222 responded, with an invitee response rate of 41.34%.

The analysis looked at many data points. Examples include salary crossed with variables such as region, gender, library type, patron size, experience, and job title.

The average respondent to the survey is a woman who has worked in the profession for 16.5 years, at a firm with a patron population of between 101-200 and earns $78,894 /yr.