Postal sector GY1 1
- La Vrangue, Guernsey, GY1 1AA
- La Vrangue, St. Peter Port, Guernsey, GY1 1AB
- Albert Pier, St. Peter Port, Guernsey, GY1 1AD
- South Esplanade, Guernsey, GY1 1AE
- South Esplanade, St. Peter Port, Guernsey, GY1 1AF
- The Albany, St. Peter Port, Guernsey, GY1 1AG
- South Esplanade, Guernsey, GY1 1AH
- South Esplanade, Guernsey, GY1 1AJ
- South Esplanade, Guernsey, GY1 1AN
- South Esplanade, Guernsey, GY1 1AP
- South Esplanade, Guernsey, GY1 1AQ
- Les Echelons, Guernsey, GY1 1AR
- Les Echelons, Guernsey, GY1 1AT
- Castle Emplacement, St. Peter Port, Guernsey, GY1 1AU
- South Esplanade, St. Peter Port, Guernsey, GY1 1AW
- La Vallette, St. Peter Port, Guernsey, GY1 1AX
- Le Val Des Terres, Guernsey, GY1 1AZ
- Havelet, Guernsey, GY1 1BA
- Havelet, Guernsey, GY1 1BB
- George Road, Guernsey, GY1 1BD
- Les Vardes, Guernsey, GY1 1BG
- Les Vardes, Guernsey, GY1 1BH
- South Esplanade, Guernsey, GY1 1BJ
- Le Bordage, Guernsey, GY1 1BP
- Montville Road, Guernsey, GY1 1BQ
- Le Bordage, Guernsey, GY1 1BR
- Mill Street, Guernsey, GY1 1BT
- Le Bordage, Guernsey, GY1 1BU
- Les Vardes, Guernsey, GY1 1BY
- Cornet Street, Guernsey, GY1 1BZ
- Fountain Street, Guernsey, GY1 1DA
- Le Bordage, Guernsey, GY1 1DB
- Tower Hill Steps, Guernsey, GY1 1DD
- Le Bordage, St. Peter Port, Guernsey, GY1 1DE
- Hauteville, Guernsey, GY1 1DG
- Hauteville, Guernsey, GY1 1DH
- Hauteville, Guernsey, GY1 1DJ
- Hauteville, Guernsey, GY1 1DL
- Hauteville, Guernsey, GY1 1DQ
- La Charroterie, Guernsey, GY1 1DR
- Valnord Road, St. Peter Port, Guernsey, GY1 1DU
- Mount Durand, Guernsey, GY1 1DX
- Mount Durand, Guernsey, GY1 1DY
- Mount Durand, Guernsey, GY1 1DZ
- Mount Durand, Guernsey, GY1 1EB
- Mount Durand, Guernsey, GY1 1ED
- Park Street, Guernsey, GY1 1EE
- Rue Du Pre, Guernsey, GY1 1EF
- La Charroterie, St. Peter Port, Guernsey, GY1 1EG
- Charroterie, Guernsey, GY1 1EJ
- Charroterie, Guernsey, GY1 1EL
- Colborne Road, Guernsey, GY1 1EN
- Colborne Road, Guernsey, GY1 1EP
- Havilland Road, Guernsey, GY1 1ER
- Croutes Havilland, Guernsey, GY1 1ET
- Ruette Braye, Guernsey, GY1 1EW
- Prince Albert Road, Guernsey, GY1 1EY
- Prince Albert Road, Guernsey, GY1 1EZ
- Rohais Road, St. Peter Port, Guernsey, GY1 1FB
- Rohais Road, Guernsey, GY1 1FD
- Rohais Road, Guernsey, GY1 1FE
- Rohais Road, St. Peter Port, Guernsey, GY1 1FF
- Rohais Road, St. Peter Port, Guernsey, GY1 1FG
- La Charroterie, St. Peter Port, Guernsey, GY1 1FH
- Collings Road, Guernsey, GY1 1FJ
- Collings Road, Guernsey, GY1 1FL
- Collings Road, Guernsey, GY1 1FN
- Collings Road, St. Peter Port, Guernsey, GY1 1FW
- Collings Road, St. Peter Port, Guernsey, GY1 1GA
- Collings Road, Guernsey, GY1 1GB
- Collings Road, Guernsey, GY1 1GF
- Collings Road, St. Peter Port, Guernsey, GY1 1GG
- Queens Road, St. Peter Port, Guernsey, GY1 1GH
- Les Ozouets Road, Guernsey, GY1 1GL
- Les Vauxlaurens, St. Peter Port, Guernsey, GY1 1GP
- Le Truchot, Guernsey, GY1 1GR
- Sir William Place, Guernsey, GY1 1GX
- St. Julians Avenue, Guernsey, GY1 1GZ
- Market Street, St. Peter Port, Guernsey, GY1 1HB
- Market Square, St. Peter Port, Guernsey, GY1 1HE
- Market Street, Guernsey, GY1 1HF
- Mill Street, Guernsey, GY1 1HG
- Burnt Lane, Guernsey, GY1 1HL
- Mansell Street, Guernsey, GY1 1HP
- Mill Street, St. Peter Port, Guernsey, GY1 1HQ
- Contree Mansell, Guernsey, GY1 1HR
- Back Street, Guernsey, GY1 1HS
- Victoria Road, Guernsey, GY1 1HU
- Mill Street, St. Peter Port, Guernsey, GY1 1HW
- Les Petites Fontaines, Guernsey, GY1 1HX
- Victoria Road, St. Peter Port, Guernsey, GY1 1HY
- Valnord Hill, St. Peter Port, Guernsey, GY1 1HZ
- Victoria Road, Guernsey, GY1 1JB
- Les Petites Fontaines, Guernsey, GY1 1JE
- Victoria Road, Guernsey, GY1 1JG
- Cordier Hill, Guernsey, GY1 1JH
- Cordier Hill, Guernsey, GY1 1JJ
- Cordier Hill, St. Peter Port, Guernsey, GY1 1JL
- La Couperderie, Guernsey, GY1 1JQ
- North Clifton, Guernsey, GY1 1JR
- Berthelot Street, Guernsey, GY1 1JS
- Berthelot Street, Guernsey, GY1 1JT
- High Street, St. Peter Port, Guernsey, GY1 1JU
- Commercial Arcade, Guernsey, GY1 1JX
- Commercial Arcade, Guernsey, GY1 1LA
- Commercial Arcade, Guernsey, GY1 1LB
- Market Hill, St. Peter Port, Guernsey, GY1 1LE
- Cornet Street, Guernsey, GY1 1LF
- Coupee Lane, Guernsey, GY1 1LG
- The Strand, Guernsey, GY1 1LJ
- Lower Hauteville, Guernsey, GY1 1LL
- Pedvin Street, Guernsey, GY1 1LN
- Trinity Square, St. Peter Port, Guernsey, GY1 1LP
- Park Lane, Guernsey, GY1 1LR
- Rue Du Pre, Guernsey, GY1 1LT
- Rue Du Pre, Guernsey, GY1 1LU
- Trinity Square, St. Peter Port, Guernsey, GY1 1LX
- Upper Mansell Street, St. Peter Port, Guernsey, GY1 1LY
- Lower Vauvert, St. Peter Port, Guernsey, GY1 1LZ
- Vauvert, Guernsey, GY1 1NA
- Vauvert, St. Peter Port, Guernsey, GY1 1NB
- Vauvert, Guernsey, GY1 1ND
- Vauvert, St. Peter Port, Guernsey, GY1 1NE
- Allez Street, Guernsey, GY1 1NG
- La Couperderie, Guernsey, GY1 1NH
- Vauvert, Guernsey, GY1 1NJ
- The Strand, Guernsey, GY1 1NN
- Vauvert, Guernsey, GY1 1NQ
- Mount Row, Guernsey, GY1 1NS
- Mount Row, Guernsey, GY1 1NT
- Mount Row, Guernsey, GY1 1NU
- Ville Au Roi, Guernsey, GY1 1NX
- Ville Au Roi, Guernsey, GY1 1NY
- Ville Au Roi, Guernsey, GY1 1NZ
- Ville Au Roi, Guernsey, GY1 1PA
- Ville Au Roi, Guernsey, GY1 1PB
- Oberlands, Guernsey, GY1 1PD
- Ville Au Roi, Guernsey, GY1 1PE
- Ville Au Roi, Guernsey, GY1 1PF
- Ville Au Roi, Guernsey, GY1 1PG
- Ruette Braye, Guernsey, GY1 1PJ
- Ruette Braye, Guernsey, GY1 1PL
- Ville Au Roi, Guernsey, GY1 1PQ
- Queens Road, Guernsey, GY1 1PS
- Queens Road, Guernsey, GY1 1PT
- Queens Road, Guernsey, GY1 1PU
- Belmont Road, Guernsey, GY1 1PY
- Les Croutes, Guernsey, GY1 1PZ
- Kings Road, Guernsey, GY1 1QA
- Kings Road, Guernsey, GY1 1QB
- Kings Road, Guernsey, GY1 1QD
- Kings Road, Guernsey, GY1 1QF
- Rue A L'or, Guernsey, GY1 1QG
- Les Croutes, Guernsey, GY1 1QH
- Les Croutes, Guernsey, GY1 1QJ
- Stanley Road, Guernsey, GY1 1QP
- Richmond Avenue, Guernsey, GY1 1QQ
- Route Isabelle, St. Peter Port, Guernsey, GY1 1QR
- Rohais, Guernsey, GY1 1QT
- Brock Road, Guernsey, GY1 1RB
- Doyle Road, Guernsey, GY1 1RD
- Doyle Road, Guernsey, GY1 1RF
- Doyle Road, Guernsey, GY1 1RG
- Grange Road, Guernsey, GY1 1RH
- Les Gravees, Guernsey, GY1 1RL
- Les Gravees, Guernsey, GY1 1RN
- Les Gravees, Guernsey, GY1 1RP
- Grange Road, Guernsey, GY1 1RQ
- Brock Road, Guernsey, GY1 1RR
- Brock Road, Guernsey, GY1 1RS
- Brock Road, Guernsey, GY1 1RT
- Brock Road, Guernsey, GY1 1RU
- Les Gravees, Guernsey, GY1 1RW
- Rouge Huis Avenue, Guernsey, GY1 1RX
- Skins Lane, St. Peter Port, Guernsey, GY1 1SB
- La Neuve Rue, Guernsey, GY1 1SD
- La Neuve Rue, Guernsey, GY1 1SE
- St. Jacques, St. Peter Port, Guernsey, GY1 1SN
- St. Jacques, Guernsey, GY1 1SP
- Upper St. Jacques, Guernsey, GY1 1SS
- Upper St. Jacques, Guernsey, GY1 1ST
- Upper St. Jacques, Guernsey, GY1 1SU
- St. Jacques, Guernsey, GY1 1SW
- Courtil St. Jacques, Guernsey, GY1 1SY
- Courtil St. Jacques, St. Peter Port, Guernsey, GY1 1SZ
- Green Lanes, Guernsey, GY1 1TH
- Green Lanes, Guernsey, GY1 1TN
- Green Lanes, Guernsey, GY1 1TQ
- Green Lanes, Guernsey, GY1 1TR
- Green Lanes, Guernsey, GY1 1TS
- Green Lanes, Guernsey, GY1 1TT
- Collings Road, Guernsey, GY1 1TX
- Cambridge Park Road, Guernsey, GY1 1UF
- Candie Road, St. Peter Port, Guernsey, GY1 1UG
- Upland Road, Guernsey, GY1 1UJ
- Monument Gardens, Guernsey, GY1 1UL
- Monument Road, Guernsey, GY1 1UN
- Candie Road, Guernsey, GY1 1UP
- Candie Road, Guernsey, GY1 1UQ
- Elm Grove, Guernsey, GY1 1UR
- Les Vauxlaurens, Guernsey, GY1 1US
- Beauregard Lane, Guernsey, GY1 1UT
- L'hyvreuse, Guernsey, GY1 1UU
- Arsenal Road, St. Peter Port, Guernsey, GY1 1UW
- L'hyvreuse, Guernsey, GY1 1UX
- L'hyvreuse, Guernsey, GY1 1UY
- L'hyvreuse Avenue, Guernsey, GY1 1UZ
- St. Julians Avenue, Guernsey, GY1 1WA
- St. Julians Avenue, Guernsey, GY1 1WB
- Le Truchot, Guernsey, GY1 1WD
- Lower Pollet, Guernsey, GY1 1WF
- La Plaiderie, Guernsey, GY1 1WG
- Le Pollet, Guernsey, GY1 1WH
- Forest Lane, Guernsey, GY1 1WJ
- Lower Pollet, Guernsey, GY1 1WL
- Glategny Esplanade, Guernsey, GY1 1WN
- Glategny Esplanade, Guernsey, GY1 1WP
- Le Pollet, Guernsey, GY1 1WQ
- Glategny Esplanade, Guernsey, GY1 1WR
- Well Road, Guernsey, GY1 1WS
- Les Amballes, Guernsey, GY1 1WT
- Les Amballes, Guernsey, GY1 1WU
- Glategny Esplanade, Guernsey, GY1 1WW
- Les Amballes, St. Peter Port, Guernsey, GY1 1WY
- St. Johns Road, Guernsey, GY1 1WZ
- La Butte, Guernsey, GY1 1XA
- Coronation Road, Guernsey, GY1 1XD
- Elm Grove, Guernsey, GY1 1XE
- La Gibauderie, St. Peter Port, Guernsey, GY1 1XG
- La Gibauderie, St. Peter Port, Guernsey, GY1 1XN
- La Gibauderie, Guernsey, GY1 1XP
- La Gibauderie, Guernsey, GY1 1XQ
- Rocquettes Road, Guernsey, GY1 1XR
- Rocquettes Lane, Guernsey, GY1 1XT
- Rosaire Avenue, St. Peter Port, Guernsey, GY1 1XW
- Fosse Andre, Guernsey, GY1 1XZ
- Rohais, St. Peter Port, Guernsey, GY1 1YJ
- Rohais, Guernsey, GY1 1YL
- Rohais, St. Peter Port, Guernsey, GY1 1YN
- Le Foulon, Guernsey, GY1 1YR
- Le Foulon, St. Peter Port, Guernsey, GY1 1YS
- Le Foulon, St. Peter Port, Guernsey, GY1 1YU
- Rohais, Guernsey, GY1 1YW
- Le Foulon, St. Peter Port, Guernsey, GY1 1YY
- Le Foulon, Guernsey, GY1 1YZ
- Rouge Rue, Guernsey, GY1 1ZA
- Rouge Rue, St. Peter Port, Guernsey, GY1 1ZB
- Rouge Rue, Guernsey, GY1 1ZE
- St. John's Road, Guernsey, GY1 1ZF
- Lower Pollet, St. Peter Port, Guernsey, GY1 1ZG
- Damouettes Lane, Guernsey, GY1 1ZN
- Fort Road, St. Peter Port, Guernsey, GY1 1ZP
- St. Julians Avenue, Guernsey, GY1 1ZQ
- Courtil Colin, Guernsey, GY1 1ZS
- Damouettes Lane, Guernsey, GY1 1ZT
- Fort Road, Guernsey, GY1 1ZU
- Fort Road, Guernsey, GY1 1ZW
- Fort Road, Guernsey, GY1 1ZX
- Fermain Lane, St. Peter Port, Guernsey, GY1 1ZZ