| 1 | Sat 18 Aug 2012 | 1-1 v Havant & WaterloovilleHavant & Waterlooville 1-1 Chelmsford City | Blue Square Bet South |
| 2 | Mon 20 Aug 2012 | 2-3 v Welling UnitedChelmsford City 2-3 Welling United | Blue Square Bet South |
| 3 | Sat 25 Aug 2012 | 3-2 v BromleyChelmsford City 3-2 Bromley | Blue Square Bet South |
| 4 | Mon 27 Aug 2012 | 0-0 v Boreham WoodBoreham Wood 0-0 Chelmsford City | Blue Square Bet South |
| 5 | Sat 1 Sep 2012 | 2-1 v Salisbury CityChelmsford City 2-1 Salisbury City | Blue Square Bet South |
| 6 | Tue 4 Sep 2012 | 1-0 v Dover AthleticDover Athletic 0-1 Chelmsford City | Blue Square Bet South |
| 7 | Sat 8 Sep 2012 | 0-1 v Dorchester TownDorchester Town 1-0 Chelmsford City | Blue Square Bet South |
| 8 | Sat 15 Sep 2012 | 2-1 v Weston-super-MareChelmsford City 2-1 Weston-super-Mare | Blue Square Bet South |
| 9 | Sat 29 Sep 2012 | 3-2 v Truro CityChelmsford City 3-2 Truro City | Blue Square Bet South |
| 10 | Tue 2 Oct 2012 | 0-1 v Sutton UnitedSutton United 1-0 Chelmsford City | Blue Square Bet South |
| 11 | Sat 13 Oct 2012 | 1-1 v EastleighChelmsford City 1-1 Eastleigh | Blue Square Bet South |
| 12 | Sat 27 Oct 2012 | 3-2 v Staines TownChelmsford City 3-2 Staines Town | Blue Square Bet South |
| 13 | Tue 30 Oct 2012 | 2-0 v AFC HornchurchAFC Hornchurch 0-2 Chelmsford City | Blue Square Bet South |
| 14 | Sat 3 Nov 2012 | 93-1 v Colchester UnitedChelmsford City 3-1 Colchester United | FA Cup with Budweiser First Round |
| 15 | Sat 17 Nov 2012 | 92-1 v Basingstoke TownBasingstoke Town 1-2 Chelmsford City | Blue Square Bet South |
| 16 | Tue 20 Nov 2012 | 90-3 v Hayes & Yeading UnitedHayes & Yeading United 3-0 Chelmsford City | Blue Square Bet South |
| 17 | Sat 1 Dec 2012 | 90-3 v Crawley TownCrawley Town 3-0 Chelmsford City | FA Cup with Budweiser Second Round |
| 18 | Sat 8 Dec 2012 | 92-3 v Salisbury CitySalisbury City 3-2 Chelmsford City | Blue Square Bet South |
| 19 | Sat 29 Dec 2012 | 92-1 v Boreham WoodChelmsford City 2-1 Boreham Wood | Blue Square Bet South |
| 20 | Tue 1 Jan 2013 | 91-0 v Billericay TownBillericay Town 0-1 Chelmsford City | Blue Square Bet South |
| 21 | Sat 5 Jan 2013 | 91-2 v Maidenhead UnitedMaidenhead United 2-1 Chelmsford City | Blue Square Bet South |
| 22 | Sat 26 Jan 2013 | 92-1 v Truro CityTruro City 1-2 Chelmsford City | Blue Square Bet South |
| 23 | Mon 28 Jan 2013 | 94-0 v Dorchester TownChelmsford City 4-0 Dorchester Town | Blue Square Bet South |
| 24 | Sat 2 Feb 2013 | 96-2 v Hayes & Yeading UnitedChelmsford City 6-2 Hayes & Yeading United | Blue Square Bet South |
| 25 | Mon 4 Feb 2013 | 91-1 v Billericay TownChelmsford City 1-1 Billericay Town | Blue Square Bet South |
| 26 | Tue 26 Feb 2013 | 90-2 v BromleyBromley 2-0 Chelmsford City | Blue Square Bet South |
| 27 | Sat 2 Mar 2013 | 93-1 v Staines TownStaines Town 1-3 Chelmsford City | Blue Square Bet South |
| 28 | Tue 5 Mar 2013 | 90-3 v Weston-super-MareWeston-super-Mare 3-0 Chelmsford City | Blue Square Bet South |
| 29 | Wed 13 Mar 2013 | 91-4 v AFC HornchurchChelmsford City 1-4 AFC Hornchurch | Blue Square Bet South |
| 30 | Mon 18 Mar 2013 | 6-0 v FarnboroughChelmsford City 6-0 Farnborough | Blue Square Bet South |
| 31 | Mon 25 Mar 2013 | 1-0 v Eastbourne BoroughChelmsford City 1-0 Eastbourne Borough | Blue Square Bet South |
| 32 | Fri 29 Mar 2013 | 0-3 v Welling UnitedWelling United 3-0 Chelmsford City | Blue Square Bet South |
| 33 | Mon 1 Apr 2013 | 0-3 v Dover AthleticChelmsford City 0-3 Dover Athletic | Blue Square Bet South |
| 34 | Sat 6 Apr 2013 | 0-1 v Bath CityChelmsford City 0-1 Bath City | Blue Square Bet South |
| 35 | Sat 13 Apr 2013 | 2-1 v Eastbourne BoroughEastbourne Borough 1-2 Chelmsford City | Blue Square Bet South |
| 36 | Mon 15 Apr 2013 | 2-1 v Tonbridge AngelsChelmsford City 2-1 Tonbridge Angels | Blue Square Bet South |
| 37 | Sat 27 Apr 2013 | 1-3 v FarnboroughFarnborough 3-1 Chelmsford City | Blue Square Bet South |
| 38 | Tue 30 Apr 2013 | 1-0 v Salisbury CityChelmsford City 1-0 Salisbury City | Blue Square Bet South Play-off Semi Final |
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