United States Postal Service official abbreviations

States and Possessions
http://www.usps.gov/ncsc/lookups/abbr_state.txt

State/Possession                Abbreviation

ALABAMA                         AL
ALASKA                          AK
AMERICAN SAMOA                  AS
ARIZONA                         AZ
ARKANSAS                        AR
CALIFORNIA                      CA
COLORADO                        CO
CONNECTICUT                     CT
DELAWARE                        DE
DISTRICT OF COLUMBIA            DC
FEDERATED STATES OF MICRONESIA  FM
FLORIDA                         FL
GEORGIA                         GA
GUAM                            GU
HAWAII                          HI
IDAHO                           ID
ILLINOIS                        IL
INDIANA                         IN
IOWA                            IA
KANSAS                          KS
KENTUCKY                        KY
LOUISIANA                       LA
MAINE                           ME
MARSHALL ISLANDS                MH
MARYLAND                        MD
MASSACHUSETTS                   MA
MICHIGAN                        MI
MINNESOTA                       MN
MISSISSIPPI                     MS
MISSOURI                        MO
MONTANA                         MT
NEBRASKA                        NE
NEVADA                          NV
NEW HAMPSHIRE                   NH
NEW JERSEY                      NJ
NEW MEXICO                      NM
NEW YORK                        NY
NORTH CAROLINA                  NC
NORTH DAKOTA                    ND
NORTHERN MARIANA ISLANDS        MP
OHIO                            OH
OKLAHOMA                        OK
OREGON                          OR
PALAU                           PW
PENNSYLVANIA                    PA
PUERTO RICO                     PR
RHODE ISLAND                    RI
SOUTH CAROLINA                  SC
SOUTH DAKOTA                    SD
TENNESSEE                       TN
TEXAS                           TX
UTAH                            UT
VERMONT                         VT
VIRGIN ISLANDS                  VI
VIRGINIA                        VA
WASHINGTON                      WA
WEST VIRGINIA                   WV
WISCONSIN                       WI
WYOMING                         WY

Military "State"                Abbreviation

Armed Forces Africa             AE
Armed Forces Americas           AA
(except Canada)
Armed Forces Canada             AE
Armed Forces Europe             AE
Armed Forces Middle East        AE
Armed Forces Pacific            AP


Street Suffixes
http://www.usps.gov/ncsc/lookups/abbr_suffix.txt

Primary        Commonly       Postal Service
Street         Used Street    Standard
Suffix         Suffix or      Suffix
Name           Abbreviation   Abbreviation

ALLEY          ALLEE          ALY
ALLEY          ALLEY          ALY
ALLEY          ALLY           ALY
ALLEY          ALY            ALY
ANNEX          ANEX           ANX
ANNEX          ANNEX          ANX
ANNEX          ANNX           ANX
ANNEX          ANX            ANX
ARCADE         ARC            ARC
ARCADE         ARCADE         ARC
AVENUE         AV             AVE
AVENUE         AVE            AVE
AVENUE         AVEN           AVE
AVENUE         AVENU          AVE
AVENUE         AVENUE         AVE
AVENUE         AVN            AVE
AVENUE         AVNUE          AVE
BAYOO          BAYOO          BYU
BAYOO          BAYOU          BYU
BEACH          BCH            BCH
BEACH          BEACH          BCH
BEND           BEND           BND
BEND           BND            BND
BLUFF          BLF            BLF
BLUFF          BLUF           BLF
BLUFF          BLUFF          BLF
BLUFFS         BLUFFS         BLFS
BOTTOM         BOT            BTM
BOTTOM         BOTTM          BTM
BOTTOM         BOTTOM         BTM
BOTTOM         BTM            BTM
BOULEVARD      BLVD           BLVD
BOULEVARD      BOUL           BLVD
BOULEVARD      BOULEVARD      BLVD
BOULEVARD      BOULV          BLVD
BRANCH         BR             BR
BRANCH         BRANCH         BR
BRANCH         BRNCH          BR
BRIDGE         BRDGE          BRG
BRIDGE         BRG            BRG
BRIDGE         BRIDGE         BRG
BROOK          BRK            BRK
BROOK          BROOK          BRK
BROOKS         BROOKS         BRKS
BURG           BURG           BG
BURGS          BURGS          BGS
BYPASS         BYP            BYP
BYPASS         BYPA           BYP
BYPASS         BYPAS          BYP
BYPASS         BYPASS         BYP
BYPASS         BYPS           BYP
CAMP           CAMP           CP
CAMP           CMP            CP
CAMP           CP             CP
CANYON         CANYN          CYN
CANYON         CANYON         CYN
CANYON         CNYN           CYN
CANYON         CYN            CYN
CAPE           CAPE           CPE
CAPE           CPE            CPE
CAUSEWAY       CAUSEWAY       CSWY
CAUSEWAY       CAUSWAY        CSWY
CAUSEWAY       CSWY           CSWY
CENTER         CEN            CTR
CENTER         CENT           CTR
CENTER         CENTER         CTR
CENTER         CENTR          CTR
CENTER         CENTRE         CTR
CENTER         CNTER          CTR
CENTER         CNTR           CTR
CENTER         CTR            CTR
CENTERS        CENTERS        CTRS
CIRCLE         CIR            CIR
CIRCLE         CIRC           CIR
CIRCLE         CIRCL          CIR
CIRCLE         CIRCLE         CIR
CIRCLE         CRCL           CIR
CIRCLE         CRCLE          CIR
CIRCLES        CIRCLES        CIRS
CLIFF          CLF            CLF
CLIFF          CLIFF          CLF
CLIFFS         CLFS           CLFS
CLIFFS         CLIFFS         CLFS
CLUB           CLB            CLB
CLUB           CLUB           CLB
COMMON         COMMON         CMN
CORNER         COR            COR
CORNER         CORNER         COR
CORNERS        CORNERS        CORS
CORNERS        CORS           CORS
COURSE         COURSE         CRSE
COURSE         CRSE           CRSE
COURT          COURT          CT
COURT          CRT            CT
COURT          CT             CT
COURTS         COURTS         CTS
COURTS         CTS            CTS
COVE           COVE           CV
COVE           CV             CV
COVES          COVES          CVS
CREEK          CK             CRK
CREEK          CR             CRK
CREEK          CREEK          CRK
CREEK          CRK            CRK
CRESCENT       CRECENT        CRES
CRESCENT       CRES           CRES
CRESCENT       CRESCENT       CRES
CRESCENT       CRESENT        CRES
CRESCENT       CRSCNT         CRES
CRESCENT       CRSENT         CRES
CRESCENT       CRSNT          CRES
CREST          CREST          CRST
CROSSING       CROSSING       XING
CROSSING       CRSSING        XING
CROSSING       CRSSNG         XING
CROSSING       XING           XING
CROSSROAD      CROSSROAD      XRD
CURVE          CURVE          CURV
DALE           DALE           DL
DALE           DL             DL
DAM            DAM            DM
DAM            DM             DM
DIVIDE         DIV            DV
DIVIDE         DIVIDE         DV
DIVIDE         DV             DV
DIVIDE         DVD            DV
DRIVE          DR             DR
DRIVE          DRIV           DR
DRIVE          DRIVE          DR
DRIVE          DRV            DR
DRIVES         DRIVES         DRS
ESTATE         EST            EST
ESTATE         ESTATE         EST
ESTATES        ESTATES        ESTS
ESTATES        ESTS           ESTS
EXPRESSWAY     EXP            EXPY
EXPRESSWAY     EXPR           EXPY
EXPRESSWAY     EXPRESS        EXPY
EXPRESSWAY     EXPRESSWAY     EXPY
EXPRESSWAY     EXPW           EXPY
EXPRESSWAY     EXPY           EXPY
EXTENSION      EXT            EXT
EXTENSION      EXTENSION      EXT
EXTENSION      EXTN           EXT
EXTENSION      EXTNSN         EXT
EXTENSIONS     EXTENSIONS     EXTS
EXTENSIONS     EXTS           EXTS
FALL           FALL           FALL
FALLS          FALLS          FLS
FALLS          FLS            FLS
FERRY          FERRY          FRY
FERRY          FRRY           FRY
FERRY          FRY            FRY
FIELD          FIELD          FLD
FIELD          FLD            FLD
FIELDS         FIELDS         FLDS
FIELDS         FLDS           FLDS
FLAT           FLAT           FLT
FLAT           FLT            FLT
FLATS          FLATS          FLTS
FLATS          FLTS           FLTS
FORD           FORD           FRD
FORD           FRD            FRD
FORDS          FORDS          FRDS
FOREST         FOREST         FRST
FOREST         FORESTS        FRST
FOREST         FRST           FRST
FORGE          FORG           FRG
FORGE          FORGE          FRG
FORGE          FRG            FRG
FORGES         FORGES         FRGS
FORK           FORK           FRK
FORK           FRK            FRK
FORKS          FORKS          FRKS
FORKS          FRKS           FRKS
FORT           FORT           FT
FORT           FRT            FT
FORT           FT             FT
FREEWAY        FREEWAY        FWY
FREEWAY        FREEWY         FWY
FREEWAY        FRWAY          FWY
FREEWAY        FRWY           FWY
FREEWAY        FWY            FWY
GARDEN         GARDEN         GDN
GARDEN         GARDN          GDN
GARDEN         GDN            GDN
GARDEN         GRDEN          GDN
GARDEN         GRDN           GDN
GARDENS        GARDENS        GDNS
GARDENS        GDNS           GDNS
GARDENS        GRDNS          GDNS
GATEWAY        GATEWAY        GTWY
GATEWAY        GATEWY         GTWY
GATEWAY        GATWAY         GTWY
GATEWAY        GTWAY          GTWY
GATEWAY        GTWY           GTWY
GLEN           GLEN           GLN
GLEN           GLN            GLN
GLENS          GLENS          GLNS
GREEN          GREEN          GRN
GREEN          GRN            GRN
GREENS         GREENS         GRNS
GROVE          GROV           GRV
GROVE          GROVE          GRV
GROVE          GRV            GRV
GROVES         GROVES         GRVS
HARBOR         HARB           HBR
HARBOR         HARBOR         HBR
HARBOR         HARBR          HBR
HARBOR         HBR            HBR
HARBOR         HRBOR          HBR
HARBORS        HARBORS        HBRS
HAVEN          HAVEN          HVN
HAVEN          HAVN           HVN
HAVEN          HVN            HVN
HEIGHTS        HEIGHT         HTS
HEIGHTS        HEIGHTS        HTS
HEIGHTS        HGTS           HTS
HEIGHTS        HT             HTS
HEIGHTS        HTS            HTS
HIGHWAY        HIGHWAY        HWY
HIGHWAY        HIGHWY         HWY
HIGHWAY        HIWAY          HWY
HIGHWAY        HIWY           HWY
HIGHWAY        HWAY           HWY
HIGHWAY        HWY            HWY
HILL           HILL           HL
HILL           HL             HL
HILLS          HILLS          HLS
HILLS          HLS            HLS
HOLLOW         HLLW           HOLW
HOLLOW         HOLLOW         HOLW
HOLLOW         HOLLOWS        HOLW
HOLLOW         HOLW           HOLW
HOLLOW         HOLWS          HOLW
INLET          INLET          INLT
INLET          INLT           INLT
ISLAND         IS             IS
ISLAND         ISLAND         IS
ISLAND         ISLND          IS
ISLANDS        ISLANDS        ISS
ISLANDS        ISLNDS         ISS
ISLANDS        ISS            ISS
ISLE           ISLE           ISLE
ISLE           ISLES          ISLE
JUNCTION       JCT            JCT
JUNCTION       JCTION         JCT
JUNCTION       JCTN           JCT
JUNCTION       JUNCTION       JCT
JUNCTION       JUNCTN         JCT
JUNCTION       JUNCTON        JCT
JUNCTIONS      JCTNS          JCTS
JUNCTIONS      JCTS           JCTS
JUNCTIONS      JUNCTIONS      JCTS
KEY            KEY            KY
KEY            KY             KY
KEYS           KEYS           KYS
KEYS           KYS            KYS
KNOLL          KNL            KNL
KNOLL          KNOL           KNL
KNOLL          KNOLL          KNL
KNOLLS         KNLS           KNLS
KNOLLS         KNOLLS         KNLS
LAKE           LAKE           LK
LAKE           LK             LK
LAKES          LAKES          LKS
LAKES          LKS            LKS
LAND           LAND           LAND
LANDING        LANDING        LNDG
LANDING        LNDG           LNDG
LANDING        LNDNG          LNDG
LANE           LA             LN
LANE           LANE           LN
LANE           LANES          LN
LANE           LN             LN
LIGHT          LGT            LGT
LIGHT          LIGHT          LGT
LIGHTS         LIGHTS         LGTS
LOAF           LF             LF
LOAF           LOAF           LF
LOCK           LCK            LCK
LOCK           LOCK           LCK
LOCKS          LCKS           LCKS
LOCKS          LOCKS          LCKS
LODGE          LDG            LDG
LODGE          LDGE           LDG
LODGE          LODG           LDG
LODGE          LODGE          LDG
LOOP           LOOP           LOOP
LOOP           LOOPS          LOOP
MALL           MALL           MALL
MANOR          MANOR          MNR
MANOR          MNR            MNR
MANORS         MANORS         MNRS
MANORS         MNRS           MNRS
MEADOW         MDW            MDW
MEADOW         MEADOW         MDW
MEADOWS        MDWS           MDWS
MEADOWS        MEADOWS        MDWS
MEADOWS        MEDOWS         MDWS
MEWS           MEWS           MEWS
MILL           MILL           ML
MILL           ML             ML
MILLS          MILLS          MLS
MILLS          MLS            MLS
MISSION        MISSION        MSN
MISSION        MISSN          MSN
MISSION        MSN            MSN
MISSION        MSSN           MSN
MOTORWAY       MOTORWAY       MTWY
MOUNT          MNT            MT
MOUNT          MOUNT          MT
MOUNT          MT             MT
MOUNTAIN       MNTAIN         MTN
MOUNTAIN       MNTN           MTN
MOUNTAIN       MOUNTAIN       MTN
MOUNTAIN       MOUNTIN        MTN
MOUNTAIN       MTIN           MTN
MOUNTAIN       MTN            MTN
MOUNTAINS      MNTNS          MTNS
MOUNTAINS      MOUNTAINS      MTNS
NECK           NCK            NCK
NECK           NECK           NCK
ORCHARD        ORCH           ORCH
ORCHARD        ORCHARD        ORCH
ORCHARD        ORCHRD         ORCH
OVAL           OVAL           OVAL
OVAL           OVL            OVAL
OVERPASS       OVERPASS       OPAS
PARK           PARK           PARK
PARK           PK             PARK
PARK           PRK            PARK
PARKS          PARKS          PARK
PARKWAY        PARKWAY        PKWY
PARKWAY        PARKWY         PKWY
PARKWAY        PKWAY          PKWY
PARKWAY        PKWY           PKWY
PARKWAY        PKY            PKWY
PARKWAYS       PARKWAYS       PKWY
PARKWAYS       PKWYS          PKWY
PASS           PASS           PASS
PASSAGE        PASSAGE        PSGE
PATH           PATH           PATH
PATH           PATHS          PATH
PIKE           PIKE           PIKE
PIKE           PIKES          PIKE
PINE           PINE           PNE
PINES          PINES          PNES
PINES          PNES           PNES
PLACE          PL             PL
PLACE          PLACE          PL
PLAIN          PLAIN          PLN
PLAIN          PLN            PLN
PLAINS         PLAINES        PLNS
PLAINS         PLAINS         PLNS
PLAINS         PLNS           PLNS
PLAZA          PLAZA          PLZ
PLAZA          PLZ            PLZ
PLAZA          PLZA           PLZ
POINT          POINT          PT
POINT          PT             PT
POINTS         POINTS         PTS
POINTS         PTS            PTS
PORT           PORT           PRT
PORT           PRT            PRT
PORTS          PORTS          PRTS
PORTS          PRTS           PRTS
PRAIRIE        PR             PR
PRAIRIE        PRAIRIE        PR
PRAIRIE        PRARIE         PR
PRAIRIE        PRR            PR
RADIAL         RAD            RADL
RADIAL         RADIAL         RADL
RADIAL         RADIEL         RADL
RADIAL         RADL           RADL
RAMP           RAMP           RAMP
RANCH          RANCH          RNCH
RANCH          RANCHES        RNCH
RANCH          RNCH           RNCH
RANCH          RNCHS          RNCH
RAPID          RAPID          RPD
RAPID          RPD            RPD
RAPIDS         RAPIDS         RPDS
RAPIDS         RPDS           RPDS
REST           REST           RST
REST           RST            RST
RIDGE          RDG            RDG
RIDGE          RDGE           RDG
RIDGE          RIDGE          RDG
RIDGES         RDGS           RDGS
RIDGES         RIDGES         RDGS
RIVER          RIV            RIV
RIVER          RIVER          RIV
RIVER          RIVR           RIV
RIVER          RVR            RIV
ROAD           RD             RD
ROAD           ROAD           RD
ROADS          RDS            RDS
ROADS          ROADS          RDS
ROUTE          ROUTE          RTE
ROW            ROW            ROW
RUE            RUE            RUE
RUN            RUN            RUN
SHOAL          SHL            SHL
SHOAL          SHOAL          SHL
SHOALS         SHLS           SHLS
SHOALS         SHOALS         SHLS
SHORE          SHOAR          SHR
SHORE          SHORE          SHR
SHORE          SHR            SHR
SHORES         SHOARS         SHRS
SHORES         SHORES         SHRS
SHORES         SHRS           SHRS
SKYWAY         SKYWAY         SKWY
SPRING         SPG            SPG
SPRING         SPNG           SPG
SPRING         SPRING         SPG
SPRING         SPRNG          SPG
SPRINGS        SPGS           SPGS
SPRINGS        SPNGS          SPGS
SPRINGS        SPRINGS        SPGS
SPRINGS        SPRNGS         SPGS
SPUR           SPUR           SPUR
SPURS          SPURS          SPUR
SQUARE         SQ             SQ
SQUARE         SQR            SQ
SQUARE         SQRE           SQ
SQUARE         SQU            SQ
SQUARE         SQUARE         SQ
SQUARES        SQRS           SQS
SQUARES        SQUARES        SQS
STATION        STA            STA
STATION        STATION        STA
STATION        STATN          STA
STATION        STN            STA
STRAVENUE      STRA           STRA
STRAVENUE      STRAV          STRA
STRAVENUE      STRAVE         STRA
STRAVENUE      STRAVEN        STRA
STRAVENUE      STRAVENUE      STRA
STRAVENUE      STRAVN         STRA
STRAVENUE      STRVN          STRA
STRAVENUE      STRVNUE        STRA
STREAM         STREAM         STRM
STREAM         STREME         STRM
STREAM         STRM           STRM
STREET         ST             ST
STREET         STR            ST
STREET         STREET         ST
STREET         STRT           ST
STREETS        STREETS        STS
SUMMIT         SMT            SMT
SUMMIT         SUMIT          SMT
SUMMIT         SUMITT         SMT
SUMMIT         SUMMIT         SMT
TERRACE        TER            TER
TERRACE        TERR           TER
TERRACE        TERRACE        TER
THROUGHWAY     THROUGHWAY     TRWY
TRACE          TRACE          TRCE
TRACE          TRACES         TRCE
TRACE          TRCE           TRCE
TRACK          TRACK          TRAK
TRACK          TRACKS         TRAK
TRACK          TRAK           TRAK
TRACK          TRK            TRAK
TRACK          TRKS           TRAK
TRAFFICWAY     TRAFFICWAY     TRFY
TRAFFICWAY     TRFY           TRFY
TRAIL          TR             TRL
TRAIL          TRAIL          TRL
TRAIL          TRAILS         TRL
TRAIL          TRL            TRL
TRAIL          TRLS           TRL
TUNNEL         TUNEL          TUNL
TUNNEL         TUNL           TUNL
TUNNEL         TUNLS          TUNL
TUNNEL         TUNNEL         TUNL
TUNNEL         TUNNELS        TUNL
TUNNEL         TUNNL          TUNL
TURNPIKE       TPK            TPKE
TURNPIKE       TPKE           TPKE
TURNPIKE       TRNPK          TPKE
TURNPIKE       TRPK           TPKE
TURNPIKE       TURNPIKE       TPKE
TURNPIKE       TURNPK         TPKE
UNDERPASS      UNDERPASS      UPAS
UNION          UN             UN
UNION          UNION          UN
UNIONS         UNIONS         UNS
VALLEY         VALLEY         VLY
VALLEY         VALLY          VLY
VALLEY         VLLY           VLY
VALLEY         VLY            VLY
VALLEYS        VALLEYS        VLYS
VALLEYS        VLYS           VLYS
VIADUCT        VDCT           VIA
VIADUCT        VIA            VIA
VIADUCT        VIADCT         VIA
VIADUCT        VIADUCT        VIA
VIEW           VIEW           VW
VIEW           VW             VW
VIEWS          VIEWS          VWS
VIEWS          VWS            VWS
VILLAGE        VILL           VLG
VILLAGE        VILLAG         VLG
VILLAGE        VILLAGE        VLG
VILLAGE        VILLG          VLG
VILLAGE        VILLIAGE       VLG
VILLAGE        VLG            VLG
VILLAGES       VILLAGES       VLGS
VILLAGES       VLGS           VLGS
VILLE          VILLE          VL
VILLE          VL             VL
VISTA          VIS            VIS
VISTA          VIST           VIS
VISTA          VISTA          VIS
VISTA          VST            VIS
VISTA          VSTA           VIS
WALK           WALK           WALK
WALKS          WALKS          WALK
WALL           WALL           WALL
WAY            WAY            WAY
WAY            WY             WAY
WAYS           WAYS           WAYS
WELL           WELL           WL
WELLS          WELLS          WLS
WELLS          WLS            WLS


Secondary Unit Designators
http://www.usps.gov/ncsc/lookups/abbr_sud.txt

Secondary            Approved
Unit Designator      Abbreviation

APARTMENT            APT
BASEMENT             BSMT *
BUILDING             BLDG
DEPARTMENT           DEPT
FLOOR                FL
FRONT                FRNT *
HANGAR               HNGR   
LOBBY                LBBY *
LOT                  LOT    
LOWER                LOWR *
OFFICE               OFC  *
PENTHOUSE            PH   *
PIER                 PIER   
REAR                 REAR *  
ROOM                 RM     
SIDE                 SIDE *
SLIP                 SLIP   
SPACE                SPC
STOP                 STOP   
SUITE                STE    
TRAILER              TRLR   
UNIT                 UNIT   
UPPER                UPPR *

* Does not require Secondary Range Number to follow.