LN - Lincoln
The postal area LN (Lincoln) comprises of the following post towns; these towns should be written in capital letters when used in addresses.
Postal Districts within LN - Lincoln
| Country | Post Town | Postal District |
| England | Lincoln | LN1 LN2 LN3 LN4 LN5 LN6 LN7 |
| Market Rasen | LN8 | |
| Horncastle | LN9 | |
| Woodhall Spa | LN10 | |
| Louth | LN11 | |
| Mablethorpe | LN12 | |
| Alford | LN13 | |
| Grantham | LN31 LN32 LN33 |
