| 1972 | Hornsby Central Library opens on 29 April at 296 Pacific Highway. |
|---|---|
| 1973 | Galston Branch Library and Pennant Hills Branch Library open. |
| 1975 | Epping Branch Library opens. |
| 1977 | Weekly Storytime begins at Hornsby and Epping. |
| 1978 | Online computer system introduced. First of its kind in NSW. |
| 1980 | Berowra Branch Library opens in the Berowra Community Centre. |
| 1981 | Cassettes Collection available for borrowing at Hornsby and Epping. |
| 1984 | Home Library Service established. |
| 1985 | Local Studies Collection created. |
| 1986 | Family History Collection introduced at Hornsby. |
| 1992 | Young Adult fiction is introduced. |
| 1993 | CD-ROM is made available for public use at Hornsby. |
| 1995 | Hornsby Central Library relocates to its current location. |
| 1996 | CDs and videos are made available at Epping Library. |
| 1999 | Internet is established at Hornsby and Pennant Hills. |
| 2007 | Knitting Group starts at Hornsby. |
| 2012 | eLibrary services commence. |
| 2015 | Rapid Reads Collection introduced at all branches. |
| 2016 | Restructure of Council boundaries, Epping Library becomes part of City of Parramatta Council. |
| 2017 | Children’s STEM Collection begins with the introduction of Launchpads. |
| 2019 | Quick Choice Collection is introduced. |
| 2021 | Refurbishment of Hornsby Library. |
| 2022 | Discovery Space is launched in April. |
