Postal sector LL42 1
- King Edward Street, Barmouth, LL42 1AD
- St. Johns Hill, Barmouth, LL42 1AE
- St. Johns Hill, Barmouth, LL42 1AF
- Church Road, Barmouth, LL42 1AG
- Barmouth, LL42 1AJ
- King Edward Street, Barmouth, LL42 1AN
- Barmouth, LL42 1AQ
- High Street, Barmouth, LL42 1AR
- St. Annes Square, Barmouth, LL42 1AS
- Water Street, Barmouth, LL42 1AT
- Dinas Oleu Road, Barmouth, LL42 1AU
- Dinas Oleu Road, Barmouth, LL42 1AY
- Barmouth, LL42 1AZ
- Dinas Oleu Road, Barmouth, LL42 1BA
- Doctors Buildings, Barmouth, LL42 1BD
- Cambrian Street, Barmouth, LL42 1BE
- Cambrian Street, Barmouth, LL42 1BG
- Gloddfa Road, Barmouth, LL42 1BH
- North Promenade, Barmouth, LL42 1BJ
- Barmouth, LL42 1BL
- St. Georges, Barmouth, LL42 1BN
- St. Georges Lane, Barmouth, LL42 1BP
- Barmouth, LL42 1BQ
- Gibraltar Lane, Barmouth, LL42 1BS
- Barmouth, LL42 1BT
- St. Georges Lane, Barmouth, LL42 1BW
- The Promenade, Barmouth, LL42 1BX
- Gibraltar Lane, Barmouth, LL42 1BY
- Gibraltar Lane, Barmouth, LL42 1DB
- Barmouth, LL42 1DD
- Gellfechan Road, Barmouth, LL42 1DE
- St. Annes Square, Barmouth, LL42 1DF
- Panorama Road, Barmouth, LL42 1DJ
- High Street, Barmouth, LL42 1DL
- Barmouth, LL42 1DN
- High Street, Barmouth, LL42 1DP
- Panorama Road, Barmouth, LL42 1DQ
- High Street, Barmouth, LL42 1DS
- Swn Y Dail, Barmouth, LL42 1DT
- High Street, Barmouth, LL42 1DU
- High Street, Barmouth, LL42 1DW
- Barmouth, LL42 1DX
- Caerdeon, Barmouth, LL42 1DZ
- St. Georges Lane, Barmouth, LL42 1ED
- Jubilee Road, Barmouth, LL42 1EE
- Jubilee Road, Barmouth, LL42 1EF
- Church Street, Barmouth, LL42 1EG
- Church Street, Barmouth, LL42 1EH
- Church Street, Barmouth, LL42 1EL
- Ffordd Pentre Mynach, Barmouth, LL42 1EN
- Maesteg, Barmouth, LL42 1EP
- Barmouth, LL42 1EQ
- Cumberland Place, Barmouth, LL42 1ES
- The Quay, Barmouth, LL42 1ET
- Bron Aber Terrace, Barmouth, LL42 1EU
- Church Street, Barmouth, LL42 1EW
- The Quay, Barmouth, LL42 1EY
- Abermaw Terrace, Barmouth, LL42 1HA
- The Quay, Barmouth, LL42 1HB
- Cae Roger, Barmouth, LL42 1HD
- Marine Place, Barmouth, LL42 1HF
- Marine Road, Barmouth, LL42 1HG
- Princes Avenue, Barmouth, LL42 1HH
- Marine Gardens, Barmouth, LL42 1HL
- Llys Dedwydd, Barmouth, LL42 1HP
- Wellington Terrace, Barmouth, LL42 1HR
- Barmouth, LL42 1HS
- Pentre Bach, Barmouth, LL42 1HT
- Heol Idris, Barmouth, LL42 1HU
- The Promenade, Barmouth, LL42 1HW
- Heol Y Sarn, Barmouth, LL42 1HY
- Heol Meirion, Barmouth, LL42 1LA
- Heol Y Llan, Barmouth, LL42 1LB
- Heol Y Llan, Barmouth, LL42 1LD
- Heol Y Plas, Barmouth, LL42 1LE
- Heol Llewelyn, Barmouth, LL42 1LF
- Tai'r Heli, Barmouth, LL42 1LG
- Beach Road, Barmouth, LL42 1LP
- Jubilee Road, Barmouth, LL42 1LR
- Beach Road, Barmouth, LL42 1LS
- Jubilee Road, Barmouth, LL42 1LT
- Station Approach, Barmouth, LL42 1LU
- Porkington Terrace, Barmouth, LL42 1LX
- Ffordd Bro Mynach, Barmouth, LL42 1LZ
- Marine Parade, Barmouth, LL42 1NA
- Marine Parade, Barmouth, LL42 1NB
- Marine Road, Barmouth, LL42 1ND
- Marine Parade, Barmouth, LL42 1NE
- The Promenade, Barmouth, LL42 1NF
- South Avenue, Barmouth, LL42 1NH
- Marine Road, Barmouth, LL42 1NL
- Barmouth, LL42 1NN
- North Avenue, Barmouth, LL42 1NP
- North Avenue, Barmouth, LL42 1NQ
- Marine Road, Barmouth, LL42 1NR
- Marine Road, Barmouth, LL42 1NS
- Marine Road, Barmouth, LL42 1NW
- King Edward Street, Barmouth, LL42 1NY
- Ffordd Llwyn Mynach, Barmouth, LL42 1PA
- King Edward Street, Barmouth, LL42 1PD
- King Edward Street, Barmouth, LL42 1PE
- King Edward Street, Barmouth, LL42 1PF
- Park Road, Barmouth, LL42 1PG
- Park Road, Barmouth, LL42 1PH
- Park Road, Barmouth, LL42 1PL
- Epworth Terrace, Barmouth, LL42 1PN
- Park Road, Barmouth, LL42 1PP
- King Edward Street, Barmouth, LL42 1PR
- Bryn Mynach Road, Barmouth, LL42 1PS
- Northfield Road, Barmouth, LL42 1PT
- Park Road, Barmouth, LL42 1PW
- Northfield Road, Barmouth, LL42 1PY
- Kings Crescent, Barmouth, LL42 1RB
- Handlith Terrace, Barmouth, LL42 1RD
- Barmouth, LL42 1RE
- Llanaber Road, Barmouth, LL42 1RF
- Mynach Road, Barmouth, LL42 1RL
- Llanaber Road, Barmouth, LL42 1RN
- Barmouth, LL42 1RR
- Park Road, Barmouth, LL42 1RW
- Aberamffra Road, Barmouth, LL42 1SU
- Aberamffra Road, Barmouth, LL42 1TB
- Aberamffra Terrace, Barmouth, LL42 1TD
- Barmouth, LL42 1TE
- Barmouth, LL42 1TF
- Barmouth, LL42 1TG
- Barmouth, LL42 1TH
- Barmouth, LL42 1TL
- Barmouth, LL42 1TN
- Ffridd Elin, Barmouth, LL42 1YA
- Llanaber Road, Barmouth, LL42 1YF
- Llanaber Road, Barmouth, LL42 1YG
- Llanaber Road, Barmouth, LL42 1YH
- Llanaber Road, Barmouth, LL42 1YN
- Llanaber Road, Barmouth, LL42 1YP
- Llanaber Road, Barmouth, LL42 1YR
- Barmouth, LL42 1YS
- Barmouth, LL42 1YT
- Barmouth, LL42 1YY