Welsh Postcodes CH (Chester) Postcodes The CH postcode area, also known as the Chester postcode area, is a group of postal districts near the England/Wales border. Having previously covered part of present-day Chester district and present-day Flintshire county , postcodes for the Wirral were transferred to it in 1999. It includes Birkenhead, Chester, Ellesmere Port, Neston, Prenton and Wallasey in England and Bagillt, Buckley, Connah's Quay, Flint, Holywell and Mold in Wales.
The approximate coverage of the postal districts:
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