Members of EHCCA are drawn from churches and their associates across the Deaneries of Bishops Stortford (including the Essex borders), Cheshunt, Hertford and Ware (predominantly in the diocese of St Albans).
Member churches include:
| BENGEO (HERTFORD) | Holy Trinity |
| BISHOPS STORTFORD | St Michael’s |
| BRAUGHING | St Mary the Virgin |
| GREAT HALLINGBURY & LITTLE HALLINGBURY | St Giles St Mary the Virgin |
| HATFIELD BROAD OAK | St Mary the Virgin |
| HERTFORD | Methodist Church |
| HERTFORD | St Andrew |
| HERTFORD | St Joseph’s |
| HOCKERILL | All Saints |
| HODDESDON | St Catherine and St Paul |
| MUCH HADHAM | St Andrew |
| NEWGATE STREET | St Mary (Ponsbourne) |
| RYE PARK | St Cuthbert |
| SAWBRIDGEWORTH | Great St Mary |
| STANDON with THE MUNDENS and SACOMBE | St Mary All Saints St Catherine |
| THORLEY | St James the Great |
| WARE | St Mary the Virgin |