Over the years the names of some streets in Amlwch have changed
a number of times.
Some of the changes are listed here. See also:-
| Early name | Later or present name | Early name | Later or present name |
| Single Row | Opposite Lon bach | Kings Street | Salem street |
| Factory Place | Western end of Mona Street | Pig market place | Parys Street |
| Methusalem Street | Mid section of Mona Street | Dan y fynwent | British Lane |
| Petter's Street | Eastern end of Mona Street | Rose(mary) lane | Lower Wesley street |
| Bank Street | Market Place | Rhos | Upper Wesley street |
| Market Square | Dinorben Square | New factory (Rholdy) | Pen y cefn area |
| Tredaeth | Area west of Mona Lodge | Lon Llwyd | Lower Wesley street |
| School lane | Bull Bay road | Catherine Ter / Rhes fawr | Opposite Mona Lodge |