| Reference |
post code |
location 1 |
location 2 |
| BT51 104 | BT51 1AJ | MILLBURN POST OFFICE | 14 ARTILLERY ROAD |
| BT51 138 | BT51 3AA | STRAND ROAD | |
| BT51 163 | BT51 3AJ | BURNSIDE PARK | GREENHALL HIGHWAY |
| BT51 31 | BT51 3AS | LAUREL HILL POST OFFICE | 6 LAUREL HILL ROAD |
| BT51 164 | BT51 3BL | CARTHALL PARK | |
| BT51 3 | BT51 3DP | WATERSIDE POST OFFICE | 14 WATERSIDE |
| BT51 106 | BT51 3HR | THE CONVENT | CASTLEROCK ROAD |
| BT51 65 | BT51 3HX | 2 BALLYCAIRN ROAD | |
| BT51 167 | BT51 3LL | SOMERSET ROAD | |
| BT51 170 | BT51 3QB | GREENMOUNT POST OFFICE | SPAR SHOP 3/5 GREENMOUNT AVENUE |
| BT51 30 | BT51 3SG | 163 DRUMCROON ROAD | |
| BT51 15 | BT51 3SP | BALLYLINTAGH ROAD | |
| BT51 166 | BT51 4AJ | WINDY HALL | 20 MONEYBRANNON ROAD, AGHADOWEY |
| BT51 13 | BT51 4AY | 121 AGIVEY ROAD | AGHADOWEY |
| BT51 67 | BT51 4BU | CULCROW PARK POST OFFICE | 190 CURRAGH ROAD |
| BT51 97 | BT51 4DJ | 53 ARDREAGH ROAD | AGHADOWEY |
| BT51 144 | BT51 4EU | GREENMOUNT ROAD | BLACKHILL |
| BT51 182 | BT51 4HP | RINGSEND POST OFFICE | 83 CRAIGMORE ROAD, RINGSEND |
| BT51 26 | BT51 4JL | BALLINREES | WINDYHILL ROAD, MACOSQUIN |
| BT51 34 | BT51 4LH | MACOSQUIN POST OFFICE | 10 RINGRASH ROAD |
| BT51 96 | BT51 4RA | CASTLEROCK POST OFFICE | 4 MAIN STREET |
| BT51 135 | BT51 4RH | TUNNEL BRAE | CASTLEROCK |
| BT51 80 | BT51 4RP | DOWNHILL | MUSSENDEN ROAD |
| BT51 73 | BT51 4TT | 3 GORTREE PARK | CASTLEROCK |
| BT51 98 | BT51 4UR | ARTICLAVE POST OFFICE | 1 SCONCE ROAD |
| BT51 668 | BT51 5AE | GARVAGH POST OFFICE | 70A MAIN STREET |
| BT51 284 | BT51 5BE | BALLINTEMPLE | 33 CHRUCHTOWN ROAD, GARVAGH |
| BT51 603 | BT51 5EG | BOLERAN ROAD | GARVAGH |
| BT51 5555 | BT51 5HS | 41 METTICAN PARK | GARVAGH |
| BT51 690 | BT51 5JP | MONEYDIG PARK | GARVAGH |
| BT51 362 | BT51 5LH | QUARTER CROSSROADS | 105 CARROWREAGH ROAD |
| BT51 594 | BT51 5LQ | MOVENIS BRIDGE | 126 CARROWREAGH ROAD, GARVAGH |
| BT51 4444 | BT51 5LR | 79 COLERAINE STREET | KILREA |
| BT51 689 | BT51 5NJ | BALLYLAME ROAD | GARVAGH |
| BT51 460 | BT51 5NX | GROVE BRIDGE, GROVE ROAD | GARVAGH |
| BT51 148 | BT51 5QD | KILREA POST OFFICE | 18 COLERAINE STREET |
| BT51 474 | BT51 5QL | MAGHERA ROAD | KILREA |
| BT51 162 | BT51 5QN | GARVAGH ROAD | |
| BT51 38 | BT51 5RS | 4 BRIDGE STREET | KILREA |
| BT51 145 | BT51 5SG | 63 LISNAGROT ROAD | |
| BT51 695 | BT51 5TZ | HARVEY HILL POST OFFICE | 124 BOVEEDY ROAD |
| BT51 429 | BT51 5XT | BOVEEDY ROAD | HILLHEAD ROAD, KILREA |
| BT51 696 | BT51 5YG | 12 GORTIN ROAD | KILREA |
Map boundaries are based on data from