NP12 1ZA lies on High Street in Blackwood. NP12 1ZA is located in the Blackwood electoral ward, within the unitary authority of Caerphilly and the Welsh Parliamentary constituency of Islwyn. The Local Health Board is Aneurin Bevan University and the police force is Gwent. This postcode has been in use since June 1999.


| Easting | 317416 |
| Northing | 197285 |
| Latitude | 51.668250 |
| Longitude | -3.195547 |
| Street | High Street |
| Town/City | Blackwood |
| Country | Wales |
| Postcode District | NP12 |
Elevation or altitude of NP12 1ZA as distance above sea level:
| Metres | Feet | |
|---|---|---|
| Elevation | 170m | 558ft |
Elevation is measured from the approximate centre of the postcode, to the nearest point on an OS contour line from OS Terrain 50, which has contour spacing of ten vertical metres.
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| Ward | Blackwood |
|---|---|
| Constituency | Islwyn |
BLACKWOOD BUSINESS CENTRE, 85, HIGH STREET, BLACKWOOD, NP12 1ZA 2001 19 JAN £328,500 |
| Pentwyn Road Garage (Pentwyn Road) | Blackwood | 146m |
| Pentwyn Road Garage (Pentwyn Road) | Blackwood | 147m |
| Asda (High Street) | Blackwood | 180m |
| Asda Car Park (Grounds) | Blackwood | 200m |
| Aldi (High Street) | Blackwood | 302m |
| Pengam Station | 2.4km |
| Gilfach Fargoed Station | 2.8km |
| Hengoed Station | 3km |



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| Last Collection | |||
|---|---|---|---|
| Location | Mon-Fri | Sat | Distance |
| Blackwood Post Office | 18:00 | 12:30 | 290m |
| Bloomfield Road Post Office | 16:00 | 11:45 | 342m |
| Cefn Fforest Post Office | 17:00 | 12:00 | 1,310m |
The below table lists the International Territorial Level (ITL) codes (formerly Nomenclature of Territorial Units for Statistics (NUTS) codes) and Local Administrative Units (LAU) codes for NP12 1ZA:
| ITL 1 Code | Name |
|---|---|
| TLL | Wales |
| ITL 2 Code | Name |
| TLL1 | West Wales and The Valleys |
| ITL 3 Code | Name |
| TLL16 | Gwent Valleys |
| LAU 1 Code | Name |
| W06000018 | Caerphilly |
The below table lists the Census Output Area (OA), Lower Layer Super Output Area (LSOA), and Middle Layer Super Output Area (MSOA) for NP12 1ZA:
| Code | Name | |
|---|---|---|
| OA | W00007058 | |
| LSOA | W01001350 | Caerphilly 009C |
| MSOA | W02000298 | Caerphilly 009 |
| NP12 1PN | High Street | 26m |
| NP12 1PQ | Cefn Road | 86m |
| NP12 1BA | High Street | 86m |
| NP12 1PR | Cefn Road | 89m |
| NP12 1NR | Hall Street | 98m |
| NP12 1AD | High Street | 99m |
| NP12 1PS | Hillside Terrace | 101m |
| NP12 1AE | High Street | 114m |
| NP12 1PU | Holly Place | 146m |
| NP12 1PT | Stanley Street | 161m |