Caerphilly County Borough · Wales
Deri population
1,006people · latest estimate
Deri has a population of 1,006, making it the 18th largest place in Caerphilly County Borough.
#18
of 18 in Caerphilly County Borough
The other populations of Deri
Depending on where you draw the boundary, Deri has between 585 and 1,006 residents. Both are correct.
| What you mean | Population | Source |
|---|---|---|
| The place itself The populated settlement, roughly the built-up core. |
1,006 | GeoNames |
| The built-up area Continuous development, where buildings sit less than 200m apart. Drawn from where the buildings are, not where the council boundary is. |
585 | ONS Census 2021 (2021) |
Why these differ: which population figure is right? · compare with another place
Year-by-year official estimates for the wider area: Caerphilly population trends, 2001–2025.
Deri in context
2 km
north-east to New Tredegar, the nearest larger town
239,326
people live within 10 km
#3,976
largest of 6,358 UK places
Distances are straight-line from the settlement's recorded coordinates. The 10 km figure sums the recorded places within that radius, so it describes how built-up the surroundings are rather than people per square kilometre.
The centre of Deri sits in postcode district CF81.
Go deeper
Population since 2001
Caerphilly, year by year from ONS estimates
Postcode district CF81
Wards, constituencies and the deprivation profile
Nearby in Caerphilly County Borough
| # | Place | Population |
|---|---|---|
| 1 | Llanbradach | 3,746 |
| 2 | Machen | 2,362 |
| 3 | Fochriw | 1,250 |