County days in England are relatively recent observances, formed to celebrate the cultural heritage of a particular English county. County days may be selected to coincide with the observance of a Saint's Day that has local significance.
| County | Date | First observed | Origin |
|---|---|---|---|
| Cornwall (St Piran's Day) | 5 March | c1900 (Cornwall) | Previously a local holiday, revived as part of Cornish nationalism movement |
| Huntingdonshire | 25 April | 2002 | Huntingdonshire Society[1] |
| Lancashire | 27 November | 1996 | Friends of Real Lancashire |
| Middlesex | 16 May | c2003 | John Randall orginated early day motion[2] |
| Sussex (St Richard's Day) | 16 June | 2007 | County councils of East and West Sussex[3] |
| Yorkshire (Yorkshire Day) | 1 August | 1975 | Yorkshire Ridings Society |
Proposals exist for various days in Somerset.[4]