Postal Code Finder
Registry / France / Postal code prefixes / 28 / 28304 CEDEX /

Postal code 28304 CEDEX in Mainvilliers, France

Postal code 28304 CEDEX is mapped to 1 locality record in France with administrative hierarchy and coordinates.

Verified data profile for Postal code 28304 CEDEX

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
28304 CEDEX
Example code
Postal code Locality Administrative path Coordinates
28304 CEDEX Mainvilliers Centre-Val de Loire / Eure-et-Loir / Chartres 48.45, 1.4561

Related postal lookups

France
country
Postal code prefixes
code_index
Prefix 28
code_prefix · 124 records
28300
nearby_postal_code · 17 records
28301 CEDEX
nearby_postal_code · 1 records
28302 CEDEX
nearby_postal_code · 1 records
28303 CEDEX
nearby_postal_code · 1 records
28305 CEDEX
nearby_postal_code · 1 records
28309 CEDEX
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/france/code/28304cedex.

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
28304 CEDEX
Sample code from Mainvilliers.
Code Place Hierarchy
28304 CEDEX Mainvilliers Centre-Val de Loire / Eure-et-Loir / Chartres
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

France
country
Postal code prefixes
code_index
Prefix 28
code_prefix · 124 records
28300
nearby_postal_code · 17 records
28301 CEDEX
nearby_postal_code · 1 records
28302 CEDEX
nearby_postal_code · 1 records
28303 CEDEX
nearby_postal_code · 1 records
28305 CEDEX
nearby_postal_code · 1 records
28309 CEDEX
nearby_postal_code · 1 records

Data questions

How should I validate 28304 CEDEX?

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 France.

View all 28 postal codes

How to validate postal code 28304 CEDEX

Treat 28304 CEDEX 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 France.

France 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

Mainvilliers
Centre-Val de Loire / Eure-et-Loir / Chartres
48.45, 1.4561

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 France. Each link opens a canonical postal-code page with its mapped places and administrative context.

28300
Amilly
28301 CEDEX
Mainvilliers
28302 CEDEX
Mainvilliers
28303 CEDEX
Mainvilliers
28305 CEDEX
Mainvilliers
28309 CEDEX
Mainvilliers
28310
Allaines-Mervilliers
28320
Bailleau-Armenonville