HERTFORDSHIRE SENIOR COUNTY LEAGUE LINE-UPS FOR 2020/21
Red denotes new or returning sides
| PREM | D1 | D2 | D3 |
| BELSTONE | ALDENHAM | BALDOCK | BEDMOND |
| BUSH HILL RANGERS | BOVINGDON RES | BOVINGDON 'A' | BUNTINGFORD RES |
| CHIPPERFIELD CORINTHIANS | BUSHEY RANGERS | BROXBOURNE BADGERS | EVERGREEN RES |
| COCKFOSTERS u23 | BUNTINGFORD TOWN | CHIPPERFIELD RES | HARPENDEN RES |
| COLNEY HEATH DEVELOPMENT | EVERGREEN | CUFFLEY RES | HATFIELD ATHELTIC |
| CUFFLEY | HATFIELD UNITED | HADLEY RES | HATFIELD TOWN u23s |
| GLENN SPORTS | HERTFORD HEATH | HEMEL ROVERS | HEMEL ROVERS RES |
| HATFIELD TOWN | HINTON | LEMSFORD | HINTON RES |
| HODDESDON TOWN RES | KNEBWORTH | LETCHWORTH RES | KNEBWORTH RES |
| LETCHWORTH GC EAGLES | OLD PARMITERIANS | OXHEY JETS DEVELOPMENT | LEMSFORD RES |
| ROYSTON TOWN RES | ORACLE COMPONENTS | OXHEY RES | OXHEY JETS VETS |
| SANDRIDGE ROVERS | OXHEY FC | SANDRIDGE RES | SARRATT RES |
| WARE SPORTS | STANDON & PUCKERIDGE | TRING TOWN | STANMORE JAFFERYS |
| WELWYN GC RES | SUN SPORTS WATFORD | WALTHAM ABBEY 'A' | STEVENAGE COMMUNITY |
| WINGATE & FINCHLEY RES | TRING RES | WARE RES | |
| WHEATHAMPSTEAD WANDERERS | WORMLEY RES |