| DL1 |
Darlington |
Darlington East |
1,405 |
| DL2 |
Darlington |
Staindrop, Gainford, Darlington |
823 |
| DL3 |
Darlington |
Darlington West |
1,151 |
| DL4 |
Shildon |
Shildon |
303 |
| DL5 |
Newton Aycliffe |
Newton Aycliffe, Heighington |
802 |
| DL6 |
Northallerton |
Northallerton East, Ingleby Cross |
678 |
| DL7 |
Northallerton |
Northallerton West |
756 |
| DL8 |
Bedale, Hawes, Leyburn |
Wensleydale, Bedale |
1,160 |
| DL9 |
Catterick Garrison |
Catterick Garrison |
392 |
| DL10 |
Richmond |
Richmond, Catterick, Brompton-upon-Swale, Scotch Corner |
841 |
| DL11 |
Richmond |
Swaledale, Arkengarthdale |
454 |
| DL12 |
Barnard Castle |
Barnard Castle, Bowes, Middleton-in-Teesdale |
729 |
| DL13 |
Bishop Auckland |
Stanhope, Frosterley, Wolsingham, Tow Law |
961 |
| DL14 |
Bishop Auckland |
Bishop Auckland, Evenwood |
1,179 |
| DL15 |
Crook |
Crook, Willington |
702 |
| DL16 |
Spennymoor, Ferryhill |
Spennymoor |
597 |
| DL17 |
Ferryhill |
Ferryhill, Chilton, Cornforth, Bishop Middleham |
535 |
| DL98 |
Darlington |
Non-geographic |
7 |
