Postal Codes of Castleknock, Leinster, Ireland
Country
Ireland
Location
Castleknock
Postal Code
D20
What is Castleknock (Ireland) postal/zip code?
The postal code for Castleknock is D20. Postal codes in Castleknock consist of 3 characters following the format ANN ANNN. Castleknock is located in Leinster, Ireland, and is part of the Northern Europe region. This postal code is essential for accurate mail delivery, online shopping, and official documentation. Whether you're sending a package, filling out a form, or verifying an address, using the correct postal code ensures your mail reaches its destination without delays. You can scan the QR code on the right to quickly save or share the complete address information for Castleknock.
How to Address Mail to Castleknock
Standard Address Format (click to edit)
RecipientJohn Doe
Street123 Example Street
DistrictCastleknock
City & PostalD20 Leinster
CountryIRELAND
Addressing Tips for Ireland - Castleknock
- Postal code format: ANN ANNN
- Write postal code before the city name
- Country name in UPPERCASE on last line
- Include district name for faster delivery
- ISO country code: IE
Shipping to Castleknock, Ireland
Domestic Delivery
1-3 days
Within Ireland
International
7-21 days
Varies by origin
Customs Threshold
€150
Duty-free limit
Local Carriers in Castleknock
An Post Fastway DPD
Castleknock: International Carriers
DHL FedEx UPS
Shipping Tips (Castleknock)
- Always include postal code D20 for faster delivery
- Items above €150 may incur customs duties
- Track your package using the carrier's tracking number
- Consider insurance for valuable shipments
Castleknock Ireland Location Information
- Region Europe
- Subregion Northern Europe
- State Leinster
- Phone Code +353
- Currency EUR
- Coordinates 53.3748, -6.3634
5 Postal Codes in Castleknock
Frequently Asked Questions
The postal code of Castleknock, Leinster, Ireland is D20. This 3-character code follows the format ANN ANNN.
Castleknock has approximately 5 postal codes covering different areas and neighborhoods within the district.
Castleknock is located in Leinster, Ireland. It is part of the Europe region and Northern Europe subregion. The coordinates are 53.37483000, -6.36336000.
To call Castleknock, Ireland, you need to dial the international code +353 followed by the local number.
The currency used in Castleknock, Ireland is Euro (EUR). The currency symbol is €.
The nearest major city to Castleknock is Leinster, approximately 0 km away.
You can verify Castleknock postal codes on PostalZipCode.co. Enter the postal code in the search bar to see its location, district, and city details.
Nearby Locations
| City | State | Distance | Latitude | Longitude |
|---|---|---|---|---|
| Blanchardstown | Leinster | 2 km | 53.388 | -6.376 |
| Chapelizod | Leinster | 3 km | 53.348 | -6.343 |
| Palmerstown | Leinster | 3 km | 53.35 | -6.378 |
| Ballyfermot | Leinster | 4 km | 53.343 | -6.355 |
| Cherry Orchard | Leinster | 4 km | 53.336 | -6.378 |
| Cabra | Leinster | 5 km | 53.367 | -6.294 |
| Finglas | Leinster | 5 km | 53.389 | -6.297 |
| Hartstown | Leinster | 5 km | 53.393 | -6.427 |
| Clondalkin | Leinster | 6 km | 53.324 | -6.397 |
| Glasnevin | Leinster | 6 km | 53.379 | -6.28 |
Other Ireland in States
Castleknock in Other Languages
Postal Codes by Country
| Country | Distance | Latitude | Longitude |
|---|---|---|---|
| Isle of Man | 156 km | 54.25 | -4.5 |
| United Kingdom | 296 km | 54 | -2 |
| Guernsey and Alderney | 507 km | 49.467 | -2.583 |
| Jersey | 543 km | 49.25 | -2.167 |
| Belgium | 761 km | 50.833 | 4 |
Related Searches
Send Money to Ireland ➞ Castleknock
Send money to your friends, family or business partners in Castleknock at a great rate with Wise. Over 14 million happy users. Low fees, fast transfers.
Send Money Last updated: April 2026


