Postal Code Finder
Registry / Singapore / Postal Code prefixes / 30 / 309421 /

Postal Code 309421 in Dunearn Road, Singapore

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Postal code 309421 covers 1 verified locality record in Singapore with interactive boundary centroid map and administrative hierarchy.

VERIFIED QUICK ANSWER & ADDRESS FORMAT 📏 Calculate Distance & Mail Time from 309421 →
Province / County / District
Singapore
Region & Locality
Dunearn Road (Singapore)
📦 How to Write a Mailing Address for 309421 
Recipient Name
Street Address / Building No.
309421 Dunearn Road
SINGAPORE

Mapped Localities for 309421

1 Place
Dunearn Road
309421
📍 1.3145, 103.839

Interactive Map: 309421 (Singapore)

Geographic Centroid & Coverage: Highlighted marker and radius show the verified WGS84 postal area centroid for 309421.

Nearby postal code lookups in Singapore

Compare 309421 with adjacent postal codes in the same area or prefix range:

309420 📍 0.0 km · 0.0 mi
Dunearn Road
309422 📍 0.0 km · 0.0 mi
Dunearn Road
309423 📍 0.2 km · 0.1 mi
Dunearn Road
309424 📍 0.2 km · 0.1 mi
Dunearn Road
309426 📍 0.2 km · 0.1 mi
Dunearn Road
309425 📍 0.3 km · 0.2 mi
Dunearn Road
309427 📍 0.3 km · 0.2 mi
Dunearn Road
309428 📍 0.3 km · 0.2 mi
Dunearn Road

Postal code prefix range: 30

Postal code 309421 belongs to the 30 prefix district in Singapore.

View all 30 postal codes → Singapore Directory

Verified data profile for Postal Code 309421

Based on 1 records, 1 postal code values and 1 mapped localities. Coordinate coverage is 100.0%.

1
Records
1
Postal identifiers
100.0%
Geocoded
309421
Example code
Postal code Locality Administrative path Coordinates
309421 Dunearn Road 1.3145, 103.839

Related postal lookups

Singapore
Country
Postal Code prefixes
Postal code prefixes
Prefix 30
Postal code range · 1,517 records
309420
Nearby postal code · 1 records
309422
Nearby postal code · 1 records
309423
Nearby postal code · 1 records
309424
Nearby postal code · 1 records
309426
Nearby postal code · 1 records
309425
Nearby postal code · 1 records

Postal code validation data

Use this page to validate one postal code or locality against real parent areas, nearby records and downloadable source rows. The canonical route for this record set is /postal-codes/singapore/code/309421.

Records
1
Database rows represented by this canonical route.
Postal identifiers
1
Distinct postal code values available for this page.
Localities
1
Mapped place names or administrative entries.
Coordinate coverage
100.0%
Rows with latitude and longitude available.
Example
309421
Sample code from Dunearn Road.
Code Place Hierarchy Coordinates
309421 Dunearn Road 1.3145, 103.839
Download postal data
CSV, JSON and XLSX exports for research, validation and data products.
Use the API
Query postal codes by country, place name, region or code prefix.
Implementation notes
Field definitions, canonical paths and practical lookup guidance.

Useful related pages

Singapore
Country
Postal Code prefixes
Postal code prefixes
Prefix 30
Postal code range · 1,517 records
309420
Nearby postal code · 1 records
309422
Nearby postal code · 1 records
309423
Nearby postal code · 1 records
309424
Nearby postal code · 1 records
309426
Nearby postal code · 1 records
309425
Nearby postal code · 1 records

Data questions

How should I validate 309421?

Validate the postal identifier together with country, locality and administrative hierarchy fields, not as a standalone global pattern.

What context is available for this record?

The page includes the parent country, related prefix or nearby codes, coordinates when available and source rows for download/API workflows.