Postal Code Finder
Registry / France / Postal code prefixes / 78 / 78120 /

Postal code 78120 in Clairefontaine-en-Yvelines, France

Postal code 78120 is mapped to 3 locality records in France with administrative hierarchy and coordinates.

Verified data profile for Postal code 78120

Based on 3 records, 1 postal code values and 3 mapped localities. Coordinate coverage is 100.0%.

3
Records
1
Postal identifiers
100.0%
Geocoded
78120
Example code
Postal code Locality Administrative path Coordinates
78120 Clairefontaine-en-Yvelines Île-de-France / Yvelines / Rambouillet 48.6167, 1.9167
78120 Rambouillet Île-de-France / Yvelines / Rambouillet 48.6437, 1.8299
78120 Sonchamp Île-de-France / Yvelines / Rambouillet 48.5759, 1.8775

Related postal lookups

France
country
Postal code prefixes
code_index
Prefix 78
code_prefix · 439 records
78116 CEDEX
nearby_postal_code · 1 records
78117
nearby_postal_code · 2 records
78118 CEDEX
nearby_postal_code · 1 records
78119 CEDEX
nearby_postal_code · 1 records
78121
nearby_postal_code · 1 records
78122 CEDEX
nearby_postal_code · 1 records

Postal code range

This code belongs to the 78 prefix range for France.

View all 78 postal codes

How to validate postal code 78120

Treat 78120 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.
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Compare this code with neighboring country ranges.
Prefix 78
View related codes in the same prefix range.

Mapped localities

Clairefontaine-en-Yvelines
Île-de-France / Yvelines / Rambouillet
48.6167, 1.9167
Rambouillet
Île-de-France / Yvelines / Rambouillet
48.6437, 1.8299
Sonchamp
Île-de-France / Yvelines / Rambouillet
48.5759, 1.8775

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.

78116 CEDEX
Le Vésinet
78117
Châteaufort
78118 CEDEX
Le Vésinet
78119 CEDEX
Le Vésinet
78121
Crespières
78122 CEDEX
Saint-Germain-en-Laye
78124
Mareil-sur-Mauldre
78125
Gazeran