Postal Code Finder
Registry / Japan / Postal code prefixes / 28 / 283-8686 /

Postal code 283-8686 in Okayamadai, Japan

Postal code 283-8686 is mapped to 1 locality record in Japan with administrative hierarchy and coordinates.

Verified data profile for Postal code 283-8686

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
283-8686
Example code
Postal code Locality Administrative path Coordinates
283-8686 Okayamadai Chiba Ken / Togane Shi 35.5652, 140.3671

Related postal lookups

Japan
country
Postal code prefixes
code_index
Prefix 28
code_prefix · 1,167 records
283-8511
nearby_postal_code · 1 records
283-8555
nearby_postal_code · 1 records
283-8588
nearby_postal_code · 1 records
283-8650
nearby_postal_code · 1 records
283-8701
nearby_postal_code · 1 records
284-0000
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/2838686.

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
283-8686
Sample code from Okayamadai.
Code Place Hierarchy
283-8686 Okayamadai Chiba Ken / Togane Shi
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
code_index
Prefix 28
code_prefix · 1,167 records
283-8511
nearby_postal_code · 1 records
283-8555
nearby_postal_code · 1 records
283-8588
nearby_postal_code · 1 records
283-8650
nearby_postal_code · 1 records
283-8701
nearby_postal_code · 1 records
284-0000
nearby_postal_code · 1 records

Data questions

How should I validate 283-8686?

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.

Postal code range

This code belongs to the 28 prefix range for Japan.

View all 28 postal codes

How to validate postal code 283-8686

Treat 283-8686 as a text value, not a number. Postal identifiers can contain leading zeroes, spaces or letters in other countries, so applications should validate the country and original string together. For this page, the code is valid when it appears with one of the mapped localities below and the administrative path belongs to Japan.

Japan lookup
Open the country-level hierarchy and dataset exports.
Browse all prefixes
Compare this code with neighboring country ranges.
Prefix 28
View related codes in the same prefix range.

Mapped localities

Okayamadai
Chiba Ken / Togane Shi
35.5652, 140.3671

Common lookup mistakes

A postal code can map to more than one locality record, and the same locality name can appear in different administrative areas. Always compare the country, postal code, place name and region together before treating a match as final.

Coordinates on this page are useful for map previews and approximate area checks. They should be read as locality or postal-area centroids, not as exact delivery addresses. For bulk validation, download the country dataset and keep this canonical URL as the human-readable reference for the code.

Nearby postal code lookups

These neighboring identifiers help compare adjacent code ranges inside Japan. Each link opens a canonical postal-code page with its mapped places and administrative context.

283-8511
Higashiiwasaki
283-8555
Gumyo
283-8588
Daikata
283-8650
Katoku
283-8701
Togane
284-0000
Yotsukaido Shi
284-0001
Dainichi
284-0002
Kayahashi