Postal code 78100
This postal code maps to one municipality in the Yvelines (78) département:
The postal-code area for 78100 covers approximately 50 km². Postal code 78100 has 5 085 addresses listed in the Base Adresse Nationale. You can also download the BAN addresses for this postal code as CSV.
Frequently asked questions
What municipality does postal code 78100 correspond to?
Postal code 78100 corresponds to the municipality ST GERMAIN EN LAYE.
What département is postal code 78100 in?
Postal code 78100 is in the Yvelines département (78).