Ynysddu

Ynysddu
High Street
Ynysddu Location within Caerphilly
Population	3,948 (2011)[1]
OS grid reference	ST180925
Principal area	Caerphilly
Preserved county	Gwent
Country	Wales
Sovereign state	United Kingdom
Post town	NEWPORT
Postcode district	NP11
Post town	BLACKWOOD
Postcode district	NP12
Dialling code	01495
Police	Gwent
Fire	South Wales
Ambulance	Welsh
UK Parliament	Islwyn
Senedd Cymru – Welsh Parliament	Islwyn
List of places UK Wales Caerphilly 51°37′36″N 3°11′10″W / 51.6267°N 3.1861°W / 51.6267; -3.1861 Map of the community

Ynysddu is a small village and community in the Sirhowy valley of south-east Wales. It is part of the district of Caerphilly within the historic boundaries of Monmouthshire. It lies between to Cwmfelinfach and Wyllie, 4.3 miles (6.9 km) north of the town of Risca and 4 miles (6.4 km) south of the market town of Blackwood. It is about 10 minutes by road from the M4 motorway and 20 minutes from the Second Severn Crossing. The population in 2008 was 2,905,^[2] increasing to 3,948 at the 2011 Census.

The community includes the settlements of Cwmfelinfach, Wyllie and Wattsville.