Flintshire is a principal area and county in north-east Wales. It borders Cheshire, Denbighshire and Wrexham It is named for the historic county of Flintshire, which had notably different borders. The district of Rhuddlan, which was also formed entirely from the administrative county of Flintshire was included in the new Denbighshire instead. Other parts of the pre-1974 administrative Flintshire to be excluded from the principal area are the Maelor Rural District and the parish of Marford and Hoseley, which became part of the Wrexham Maelor district in 1974 and are now part of the Wrexham county borough.

Flint is a town in Flintshire, North Wales, lying on the estuary of the River Dee. It was the county town of the historic county of Flintshire. It is the third largest town in Flintshire. Flint has the oldest town charter in Wales, dating from 1284.[citation needed] It is sited on the banks of the Dee Estuary with lovely views over the Wirral peninsula. Views to the south of Flint include Halkyn Mountain.

Holywell  is the fifth largest town in Flintshire, lying to the west of the estuary of the River Dee.
The town is known for St Winefride's Well, a holy well surrounded by a chapel. The well has been known since at least the Roman period, and has been a site of pilgrimage since about 660 when Saint Winefride is said to have been beheaded there. The well is one of the Seven Wonders of Wales and the town bills itself as The Lourdes of Wales.

Mold is a town in Flintshire, on the River Alyn. According to the 2001 UK census, it has a population of 10,547. Attractions in Mold include the 13th century parish church a small museum, and the regional arts centre, Clwyd Theatr Cymru.

Queensferry is a town in Flintshire, lying on the River Dee near the border with England. Queensferry lies along the B5441 and B5129, and is bypassed by the A494 dual carriageway. It is contiguous with Deeside. While Deeside is not considered a part of Queensferry proper, it still lends it names to many of Queensferry's features, including the Deeside Leisure Centre, a sports and leisure venue which also used to host music concerts.