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Registry / Japan / Postal code prefixes / 28 / 287-0045 /

Postal code 287-0045 in Seki, Japan

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Postal code 287-0045 covers 1 verified locality record in Japan with interactive boundary centroid map and administrative hierarchy.

Mapped Localities for 287-0045

1 Place
Seki
287-0045
Chiba Ken · Katori Shi
📍 35.871, 140.4446

Interactive Map: 287-0045 (Japan)

Geographic Centroid & Coverage: Highlighted marker and radius show the verified WGS84 postal area centroid for 287-0045.

Nearby postal code lookups in Japan

Compare 287-0045 with adjacent postal codes in the same area or prefix range:

287-0041
Tamatsukuri
287-0042
Yamanobe
287-0043
Oto
287-0044
Katano
287-0046
Kamiogawa
287-0047
Tokizaki
287-0048
Nishiwada
287-0051
Niidera

Postal code prefix range: 28

Postal code 287-0045 belongs to the 28 prefix district in Japan.

View all 28 postal codes → Japan Directory

Verified data profile for Postal code 287-0045

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
287-0045
Example code
Postal code Locality Administrative path Coordinates
287-0045 Seki Chiba Ken / Katori Shi 35.871, 140.4446

Related postal lookups

Japan
Country
Postal code prefixes
Postal code prefixes
Prefix 28
Postal code range · 1,167 records
287-0041
Nearby postal code · 1 records
287-0042
Nearby postal code · 1 records
287-0043
Nearby postal code · 1 records
287-0044
Nearby postal code · 1 records
287-0046
Nearby postal code · 1 records
287-0047
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/japan/code/2870045.

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
287-0045
Sample code from Seki.
Code Place Hierarchy Coordinates
287-0045 Seki Chiba Ken / Katori Shi 35.871, 140.4446
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

Japan
Country
Postal code prefixes
Postal code prefixes
Prefix 28
Postal code range · 1,167 records
287-0041
Nearby postal code · 1 records
287-0042
Nearby postal code · 1 records
287-0043
Nearby postal code · 1 records
287-0044
Nearby postal code · 1 records
287-0046
Nearby postal code · 1 records
287-0047
Nearby postal code · 1 records

Data questions

How should I validate 287-0045?

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.