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Registry / Korea (South) / Postal Code prefixes / 28 / 28557 /

Postal Code 28557 in 청주시 흥덕구, Korea (South)

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Postal code 28557 covers 1 verified locality record in Korea (South) with interactive boundary centroid map and administrative hierarchy.

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Province / County / District
청주시 흥덕구
Region & Locality
청주시 흥덕구, 충청북도 (Korea (South))
📦 How to Write a Mailing Address for 28557
Recipient Name
Street Address / Building No.
28557 청주시 흥덕구, 충청북도
KOREA (SOUTH)

Mapped Localities for 28557

1 Place
청주시 흥덕구
28557
충청북도 · 청주시 흥덕구
📍 36.6419, 127.4637

Interactive Map: 28557 (Korea (South))

Geographic Centroid & Coverage: Highlighted marker and radius show the verified WGS84 postal area centroid for 28557.

Technical Geodesic & Postal Specifications for 28557

Postal Identifier 28557
Primary Locality 청주시 흥덕구
WGS84 Centroid Coordinates 36.6419, 127.4637
Postal Prefix Sector28xx → Browse prefix 28
Time Zone (Standard)UTC+8 (Solar / Geodesic)
Geodesic Quadrant36.6419° N, 127.4637° E (WGS84)
Open Location Code (Plus Code)8Q89JFR7+QF
UTM Grid Coordinates (WGS84)52S 362663m E, 4056247m N
Solar Daylight Today (UTC)🌅 21:40 UTC  ·  🌇 08:49 UTC
Distance from Your Location

Nearby postal code lookups in Korea (South)

Compare 28557 with adjacent postal codes in the same area or prefix range:

27868 📍 13.4 km · 8.3 mi
문백면
27870 📍 15.3 km · 9.5 mi
문백면
27867 📍 16.0 km · 9.9 mi
문백면
27869 📍 16.2 km · 10.1 mi
문백면
27866 📍 16.5 km · 10.3 mi
문백면
27861 📍 16.9 km · 10.5 mi
초평면
27860 📍 17.1 km · 10.6 mi
초평면
27911 📍 17.9 km · 11.1 mi
증평읍

Postal code prefix range: 28

Postal code 28557 belongs to the 28 prefix district in Korea (South).

View all 28 postal codes → Korea (South) Directory

Verified data profile for Postal Code 28557

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
28557
Example code
Postal code Locality Administrative path Coordinates
28557 청주시 흥덕구 충청북도 / 청주시 흥덕구 36.6419, 127.4637

Related postal lookups

Korea (South)
Country
Postal Code prefixes
Postal code prefixes
Prefix 28
Postal code range · 763 records
27868
Nearby postal code · 1 records
27870
Nearby postal code · 1 records
27867
Nearby postal code · 1 records
27869
Nearby postal code · 1 records
27866
Nearby postal code · 1 records
27861
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/korea-south/code/28557.

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
28557
Sample code from 청주시 흥덕구.
Code Place Hierarchy Coordinates
28557 청주시 흥덕구 충청북도 / 청주시 흥덕구 36.6419, 127.4637
Download postal data
CSV, JSON and XLSX exports for research, validation and data products.
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Query postal codes by country, place name, region or code prefix.
Implementation notes
Field definitions, canonical paths and practical lookup guidance.

Useful related pages

Korea (South)
Country
Postal Code prefixes
Postal code prefixes
Prefix 28
Postal code range · 763 records
27868
Nearby postal code · 1 records
27870
Nearby postal code · 1 records
27867
Nearby postal code · 1 records
27869
Nearby postal code · 1 records
27866
Nearby postal code · 1 records
27861
Nearby postal code · 1 records

Data questions

How should I validate 28557?

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.

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