Caernarfonshire (also spelled Caernarvonshire) is a historic county in north-west Wales. It was established as a county under the Laws in Wales Acts 1535–1542, which integrated the principalities of Wales into the legal system of the Kingdom of England. The county was named after its county town, Caernarfon, which lies on the Menai Strait opposite the island of Anglesey.
Geography
Caernarfonshire is bounded by the Irish Sea to the north and west, Anglesey to the northwest (across the Menai Strait), Merionethshire to the south, and Denbighshire to the east. The terrain includes coastal plains, the mountainous regions of Snowdonia (Eryri), and the Cambrian Mountains. Notable physical features are Snowdon, the highest peak in Wales (1,085 m), and the broad estuary of the River Conwy.
Administrative history
- 1536: Formal creation of the county under English law.
- 1889: The Local Government Act 1888 established Caernarfonshire County Council as the first elected county authority.
- 1974: The county was abolished as an administrative unit by the Local Government Act 1972 and merged into the newly formed county of Gwynedd, along with Anglesey and Merionethshire.
- 1996: Further reorganization under the Local Government (Wales) Act 1994 retained most of the historic area within the principal area of Gwynedd, while some eastern parts were incorporated into Conwy County Borough.
Demographics
At the time of the 1971 Census, shortly before its administrative abolition, Caernarfonshire had a population of approximately 150,000 residents. The population was primarily Welsh-speaking, especially in rural and mountainous districts. The largest towns were Caernarfon, Pwllheli, and Porthmadog.
Economy
Historically, the county’s economy was based on agriculture, slate quarrying, and maritime trade. The town of Blaenau Ffestiniog became a global centre for slate production during the 19th and early 20th centuries. In the late 20th century, tourism related to Snowdonia National Park and coastal resorts became increasingly significant.
Cultural significance
Caernarfonshire contains a high density of medieval castles, including Caernarfon Castle, Harlech Castle, and Beaumaris Castle, reflecting its strategic importance during the Edwardian conquest of Wales. The region also hosts a number of historic sites related to Welsh language and culture, such as the National Eisteddfod of Wales, which has been held in the county multiple times.
Legacy
Although no longer an administrative unit, the historic boundaries of Caernarfonshire continue to be used for cultural, geographical, and genealogical reference. The term appears in historical literature, place‑name studies, and in the naming of certain modern organisations (e.g., Caernarfonshire Historical Society).
