The 2017–18 season was the 75th in the history of Eastern Counties Football League, a football competition in England.
[1] It was also the last season to have a single division at Step 6.
The constitution for Step 5 and Step 6 divisions for 2017–18 was announced on 26 May 2017,[2] and the Eastern Counties divisions constitutions were ratified at the league's AGM on 17 June 2017.
[3] Coggeshall Town were champions, winning their first Eastern Counties Football League title and were promoted to the Isthmian League for the first time in their history.
Felixstove & Walton United finished second and were promoted due to expansion of step 4 up to seven divisions.