| 11th Century |
| 1086 | The Lower Mill mentioned in the Domesday Book |
| 15th Century |
| 1474 | The Upper Mill is built |
| 16th Century |
| 1576 | There is some evidence to suggest that the building of Trevalyn Hall was started by John Trevor III |
| 17th Century |
| 1620 | Reference in a written survey that a knight known as Richard Trevor held a chapel at Yr Orsedd Goch in Allington called the chapel of St Peter. This had a piece of common land adjoining it which was 140 feet long and 72 feet wide. This is now the children's playground opposite Rossett Hall. |
| 1661 | Upper Mill (Rossett Mill) extended and renovated, replacing the earlier one. |
| 1675 | Plans were made to build a road from Rossett to Holt. Apparently the two main obstacles were boggy ground and the need to build a bridge across the Alyn, just beyond Allington, that was capable of carrying fully laden wagons. |
| 19th Century |
| 1840 | The parish of Rossett was formed out of the parish of Gresford, comprising the Denbighshire townships of Allington (Trefalun) and Burton, and the detached Flintshire townships of Marford and Hoseley |
| 1841 | The new parish church was built and consecrated as Christ Church. It was said to have been of "somewhat eccentric design, both inside and out" |
| 1846 | Rossett Station built by GWR. |
| 1859 | Village School built in Station Road - and extended in 1860! |
| 1862 | Burton School built
Hafod Alyn (Strathalyn) built |
| 1870 | Heating using hot water pipes introduced into Christ Church |
| 1875 | Foundation stone of new Presbyterian Chapel laid by American Evangelist Mr D L Moody. |
| 1877 | Presbyterian Chapel completed |
| 1881 | Cocoa Rooms (Rossett Institute) built |
| 1890 | Congregational Chapel built in Lavister |
| 1891 | Foundation stone of a completely new parish church was laid on 1st May. |
| 1892 | New parish church consecrated on All Saints Day |
| 20th Century |
| 1911 | Church Hall built on Station Road |
| 1921 | The new bridge over the Alyn was opened on 16th July |
| 1940 | Burton School closes |
| 1950 | New school built in Chapel Lane to replace the old one in Station Road |
| 1955 | Old Village School in Station Road demolished - now the Car Park |
| 1956 | Rossett Station's buildings demolished (station axed by Beeching in the 60's) |
| 1960 | Rossett Signal Box opened more details and a picture here |
| 1972 | Roman Catholic Church built on corner of Harwoods Lane
Lower Mill renovated and converted into offices (now BASC) |
| 1974 | Rossett moves from Denbighshire to Clwyd |
| 1986 | Rossett Signal Box closed! |
| 1996 | Rossett moves from Clwyd to Wrexham County Borough |
| 1998 | Horace Jones Ironmongers closes |