The 2017–18 United Counties League season (known as the 2017–18 ChromaSport & Trophies United Counties League for sponsorship reasons) was the 111th in the history of the United Counties League, a football competition in England.
The constitution for Step 5 and Step 6 divisions for 2017–18 was announced on 26 May 2017.[1]
Source: UCFL Tablesfchd Rules for classification: 1) Points; 2) Goal difference; 3) Number of goals scored; 4) Number of matches won; 5) Head-to-head results [2] Notes:
^12 of the 14 runners-up at Step 5 were to have been promoted to Step 4. However, with resignations and mergers in leagues above, all fourteen runners-up were promoted.
^Eynesbury Rovers were deducted three points for playing an ineligible player against Cogenhoe United on 16 January.