| Country | England |
|---|---|
| UK region | Eastern |
| Postcode area | SG |
| District | North Hertfordshire |
Newnham postcode districts
Newnham has 1 postcode district
Newnham postcode sectors
Newnham has 1 postcode sector
| Country | England |
|---|---|
| UK region | Eastern |
| Postcode area | SG |
| District | North Hertfordshire |
Newnham has 1 postcode district
Newnham has 1 postcode sector