Postal Code Finder
Registry / France / Postal code prefixes / 40 / 40400 /

Postal code 40400 in Audon, France

Postal code 40400 is mapped to 9 locality records in France with administrative hierarchy and coordinates.

Verified data profile for Postal code 40400

Based on 9 records, 1 postal code values and 9 mapped localities. Coordinate coverage is 100.0%.

9
Records
1
Postal identifiers
100.0%
Geocoded
40400
Example code
Postal code Locality Administrative path Coordinates
40400 Audon Nouvelle-Aquitaine / Landes / Dax 43.8001, -0.8219
40400 Bégaar Nouvelle-Aquitaine / Landes / Dax 43.8236, -0.849
40400 Carcarès-Sainte-Croix Nouvelle-Aquitaine / Landes / Dax 43.8413, -0.7898
40400 Carcen-Ponson Nouvelle-Aquitaine / Landes / Dax 43.8819, -0.8074
40400 Gouts Nouvelle-Aquitaine / Landes / Dax 43.7892, -0.8006
40400 Lesgor Nouvelle-Aquitaine / Landes / Dax 43.853, -0.9018

Related postal lookups

France
country
Postal code prefixes
code_index
Prefix 40
code_prefix · 107 records
40360
nearby_postal_code · 5 records
40370
nearby_postal_code · 3 records
40380
nearby_postal_code · 14 records
40390
nearby_postal_code · 8 records
40410
nearby_postal_code · 6 records
40420
nearby_postal_code · 5 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/40400.

Records
9
Database rows represented by this canonical route.
Postal identifiers
1
Distinct postal code values available for this page.
Localities
9
Mapped place names or administrative entries.
Coordinate coverage
100.0%
Rows with latitude and longitude available.
Example
40400
Sample code from Audon.
Code Place Hierarchy
40400 Audon Nouvelle-Aquitaine / Landes / Dax
40400 Bégaar Nouvelle-Aquitaine / Landes / Dax
40400 Carcarès-Sainte-Croix Nouvelle-Aquitaine / Landes / Dax
40400 Carcen-Ponson Nouvelle-Aquitaine / Landes / Dax
40400 Gouts Nouvelle-Aquitaine / Landes / Dax
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 40
code_prefix · 107 records
40360
nearby_postal_code · 5 records
40370
nearby_postal_code · 3 records
40380
nearby_postal_code · 14 records
40390
nearby_postal_code · 8 records
40410
nearby_postal_code · 6 records
40420
nearby_postal_code · 5 records

Data questions

How should I validate 40400?

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 40 prefix range for France.

View all 40 postal codes

How to validate postal code 40400

Treat 40400 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 40
View related codes in the same prefix range.

Mapped localities

Audon
Nouvelle-Aquitaine / Landes / Dax
43.8001, -0.8219
Bégaar
Nouvelle-Aquitaine / Landes / Dax
43.8236, -0.849
Carcarès-Sainte-Croix
Nouvelle-Aquitaine / Landes / Dax
43.8413, -0.7898
Carcen-Ponson
Nouvelle-Aquitaine / Landes / Dax
43.8819, -0.8074
Gouts
Nouvelle-Aquitaine / Landes / Dax
43.7892, -0.8006
Lesgor
Nouvelle-Aquitaine / Landes / Dax
43.853, -0.9018
Meilhan
Nouvelle-Aquitaine / Landes / Dax
43.8644, -0.7059
Saint-Yaguen
Nouvelle-Aquitaine / Landes / Dax
43.889, -0.7428
Tartas
Nouvelle-Aquitaine / Landes / Dax
43.8325, -0.809

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.

40360
Bastennes
40370
Beylongue
40380
Baigts
40390
Biarrotte
40410
Belhade
40420
Brocas
40430
Argelouse
40440
Ondres