Complete routing directory
Places and outward postcode districts
Illuminance compliance surveys across Hertfordshire — from town-centre offices and retail to the county’s distribution and logistics parks. Postal districts may cross county boundaries; coverage is based on the site address supplied when booking.
| Town, village or locality | Postcode district(s) |
|---|---|
| Abbots Langley | WD2 |
| Albury | SG11 |
| Aldbury | HP23 |
| Aldenham | WD2 |
| Allen's Green | CM21 |
| Anstey | SG9 |
| Apsley | HP3 |
| Apsley End | SG5 |
| Ardeley | SG2 |
| Ashwell | SG7 |
| Aspenden | SG9 |
| Aston | SG2 |
| Aston End | SG2 |
| Astwick | SG5 |
| Ayot St Lawrence | AL6 |
| Ayot St Peter | AL6 |
| Baker's End | SG12 |
| Baldock | SG7 |
| Barkway | SG8 |
| Barley | SG8 |
| Barleycroft End | SG9 |
| Batchworth | WD3 |
| Batchworth Heath | WD3 |
| Bayford | SG13 |
| Bayfordbury | SG13 |
| Bedmond | WD5 |
| Bell Bar | AL9 |
| Bendish | SG4 |
| Bengeo | SG14 |
| Benington | SG2 |
| Berkhamsted | HP4 |
| Bishop's Stortford | CM23 |
| Blackmore End | AL4 |
| Borehamwood | WD6 |
| Bourne End | HP1 |
| Bovingdon | HP3 |
| Boxmoor | HP1 |
| Bragbury End | SG2 |
| Bramfield | SG14 |
| Braughing | SG11 |
| Breachwood Green | SG4 |
| Brent Pelham | SG9 |
| Bricket Wood | AL2 |
| Broadwater | SG2 |
| Brookmans Park | AL9 |
| Broxbourne | EN10 |
| Buckland | SG9 |
| Buckland Common | HP23 |
| Bucks Hill | WD4 |
| Bull's Green | SG3 |
| Buntingford | SG9 |
| Burnham Green | AL6 |
| Bury Green | SG11 |
| Bushey | WD1, WD23 |
| Bushey Heath | WD2 |
| Bygrave | SG7 |
| Caldecote | SG7 |
| Chandler's Cross | WD1 |
| Chapmore End | SG12 |
| Charlton | SG5 |
| Cheshunt | EN8 |
| Cheverell's Green | AL3 |
| Childwick Green | AL3 |
| Chipperfield | WD4 |
| Chipping | SG9 |
| Chiswell Green | AL2 |
| Chorleywood | WD3 |
| Church End | AL3 |
| Churchgate | EN7 |
| Clothall | SG7 |
| Cockernhoe | LU2 |
| Codicote | SG4 |
| Cole Green | SG14 |
| Collier's End | SG11 |
| Colney Heath | AL4 |
| Colney Street | AL2 |
| Cottered | SG9 |
| Cromer | SG2 |
| Cromer Hyde | AL8 |
| Croxley Green | WD3 |
| Cuffley | EN6 |
| Dagnall | HP4 |
| Dane End | SG12 |
| Datchworth | SG3 |
| Datchworth Green | SG3 |
| Digswell | AL8 |
| East End | SG9 |
| Eastwick | CM20 |
| Elstree | WD6 |
| Epping Green | SG13 |
| Essendon | AL9 |
| Felden | HP3 |
| Flamstead | AL3 |
| Flamstead End | EN7 |
| Flaunden | HP3 |
| Frogmore | AL2 |
| Furneux Pelham | SG9 |
| Gaddesden Row | HP2 |
| Goff's Oak | EN7 |
| Gosmore | SG4 |
| Graveley | SG4 |
| Great Amwell | SG12 |
| Great Gaddesden | HP1 |
| Great Hormead | SG9 |
| Great Offley | SG5 |
| Great Wymondley | SG4 |
| Green End | SG12 |
| Green Street | WD6 |
| Green Tye | SG10 |
| Hadham Cross | SG10 |
| Hadham Ford | SG11 |
| Hailey | EN11 |
| Hall's Green | SG4 |
| Hammond Street | EN7 |
| Hare Street | SG2, SG9 |
| Harmer Green | AL6 |
| Harpenden | AL5 |
| Hastoe | HP23 |
| Hatching Green | AL5 |
| Hatfield | AL10 |
| Hatfield Hyde | AL7 |
| Haultwick | SG11 |
| Hay Street | SG11 |
| Hebing End | SG2 |
| Hemel Hempstead | HP3 |
| Heronsgate | WD3 |
| Hertford | SG13 |
| Hertford Heath | SG13 |
| Hertingfordbury | SG14 |
| Hexton | SG5 |
| High Cross | SG11 |
| High Wych | CM21 |
| Higham Gobion | SG5 |
| Hinxworth | SG7 |
| Hitchin | SG4, SG5 |
| Hoddesdon | EN11 |
| Holwell | SG5 |
| Hunsdon | SG12 |
| Huntonbridge | WD4 |
| Ickleford | SG5 |
| Kelshall | SG8 |
| Kimpton | SG4 |
| King's Walden | SG4 |
| Kings Langley | WD4 |
| Kinsbourne Green | AL5 |
| Knebworth | SG3 |
| Langley | SG4 |
| Lemsford | AL8 |
| Letchmore Heath | WD2 |
| Letchworth | SG6 |
| Letty Green | SG14 |
| Leverstock Green | HP3 |
| Ley Green | SG4 |
| Lilley | LU2 |
| Little Amwell | SG13 |
| Little Berkhamsted | SG13 |
| Little Gaddesden | HP4 |
| Little Hadham | SG11 |
| Little Hormead | SG9 |
| Little Wymondley | SG4 |
| London Colney | AL2 |
| Long Marston | HP23 |
| Maple Cross | WD3 |
| Markyate | AL3 |
| Marshall's Heath | AL4 |
| Meesden | SG9 |
| Merry Hill | WD2 |
| Mill End | SG9 |
| Much Hadham | SG10 |
| Nasty | SG11 |
| Nettleden | HP1 |
| New Mill | HP23 |
| Newgate Street | SG13 |
| Newnham | SG7 |
| Northaw | EN6 |
| Northchurch | HP4 |
| Norton | SG6 |
| Nuthampstead | SG8 |
| Oaklands | AL6 |
| Old Knebworth | SG3 |
| Park Street | AL2 |
| Patmore Heath | SG11 |
| Perry Green | SG10 |
| Peter's Green | LU2 |
| Piccotts End | HP2 |
| Pirton | SG5 |
| Potten End | HP4 |
| Potters Bar | EN6 |
| Potters Crouch | AL2 |
| Preston | SG4 |
| Puckeridge | SG11 |
| Radlett | WD7 |
| Radwell | SG7 |
| Redbourn | AL3 |
| Reed | SG8 |
| Rickmansworth | WD3 |
| Ridge | EN6 |
| Ringshall | HP4 |
| Roe Green | SG9 |
| Royston | SG8 |
| Rushden | SG9 |
| Rye Park | EN11 |
| Sacombe | SG12 |
| Sandon | SG9 |
| Sandridge | AL4 |
| Sarratt | WD3 |
| Sawbridgeworth | CM21 |
| Shenley | WD7 |
| Shenleybury | WD7 |
| Shephall | SG2 |
| Smug Oak | AL2 |
| South Mimms | EN6 |
| South Oxhey | WD1 |
| Spitalbrook | EN11 |
| St Albans | AL1, AL3 |
| St Ippollitts | SG4 |
| St Leonards | HP23 |
| St Margarets | SG12 |
| St Paul's Walden | SG4 |
| St Stephens | AL3 |
| Stanborough | AL8 |
| Standon | SG11 |
| Stanstead Abbots | SG12 |
| Stapleford | SG14 |
| Stevenage | SG1 |
| Stocking Pelham | SG9 |
| Tewin | AL6 |
| The Folly | AL4 |
| The Node | SG4 |
| Therfield | SG8 |
| Thorley | CM23 |
| Throcking | SG9 |
| Thundridge | SG12 |
| Tonwell | SG12 |
| Tring | HP23 |
| Trowley Bottom | AL3 |
| Turnford | EN10 |
| Upton End | SG5 |
| Wadesmill | SG12 |
| Walkern | SG2 |
| Wallington | SG7 |
| Walsworth | SG4 |
| Waltham Cross | EN8 |
| Ware | SG12 |
| Wareside | SG12 |
| Water End | AL9, HP1 |
| Waterford | SG14 |
| Watford | WD1, WD17, WD18, WD19, WD24, WD25, WD99 |
| Watton-at-Stone | SG14 |
| Welham Green | AL9 |
| Welwyn | AL6 |
| Welwyn Garden City | AL8 |
| West Hyde | WD3 |
| Westmill | SG9 |
| Weston | SG4 |
| Wheathampstead | AL4 |
| Whitwell | SG4 |
| Widford | SG12 |
| Wigginton | HP23 |
| Wildhill | AL9 |
| Willian | SG6 |
| Wilstone | HP23 |
| Wood End | SG2 |
| Woodside | AL9 |
| Woolmer Green | SG3 |
| Wormley | EN10 |
| Wyddial | SG9 |
Source: GeoNames GB postal dataset, generated 29 July 2026 under CC BY 4.0. “All postcodes” means all full delivery postcodes within the listed outward districts; individual address-level postcodes are not reproduced.