(treat as illegible and go to the next field)
Standard Address Abbreviations
Internal Revenue Manual Part 3. Submission Processing · 2026-10-03 edition · updated 2026-10-04 · United States
The following standard address abbreviations should always be used, unless the word is being used as a proper name.
WORD
ABBR
WORD
ABBR
Air Force Base
AFB
One-half (all fractions space before and after the number)
1/2
Apartment
APT
Parkway
PKWY
Avenue
AVE
Place
PL
Boulevard
BLVD
Plaza
PLZ
Building
BLDG
Post Office Box, P.O. Box, P.O. Drawer, POB, PO
PO BOX
Circle
CIR
Private Mailbox, PMB
PMB
Court
CT
Road
RD
Department
DEPT
Room
RM
Drive
DR
Route, RT, Rte.
RTE
East, Ea
E
Rural Route, Rural Delivery, R.D., RFD, R.F.D., RR, R.R.
RR
Floor, Flr
FL
South, So., So
S
Fort
FT
Southeast, S.E.
SE
Highway
HWY
Southwest, S.W.
SW
Highway Contract
HC
Space
SPC
Lane
LN
Square
SQ
North, No., No (See 3.24.37.6.16(2)h for rules.)
N
Street
ST
Northeast, N.E.
NE
Suite
STE
Northwest, N.W.
NW
Terrace, Terr
TER
West, We
W
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