IEEE Computer Society Style Guide

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Note: With the exception of running text—where the state name is spelled out—use of the postal abbreviation is perferred (CMS 10.28).

Locations

United States

State

Standard abbreviation

Postal abbreviation

Alabama

Ala.

AL

Alaska

Alaska

AK

Arizona

Ariz.

AZ

Arkansas

Ark.

AR

California

Calif.

CA

Colorado

Colo.

CO

Connecticut

Conn.

CT

Delaware

Del.

DE

District of Columbia

D.C.

DC

Florida

Fla.

FL

Georgia

Ga.

GA

Guam

Guam

GU

Hawaii

Hawaii

HI

Idaho

Idaho

ID

Illinois

Ill.

IL

Indiana

Ind.

IN

Iowa

Iowa

IA

Kansas

Kan.

KS

Kentucky

Ky.

KY

Louisiana

La.

LA

Maine

Maine

ME

Maryland

Md.

MD

Massachusetts

Mass.

MA

Michigan

Mich.

MI

Minnesota

Minn.

MN

Mississippi

Miss.

MS

Missouri

Mo.

MO

Montana

Mont.

MT

Nebraska

Neb.

NE

Nevada

Nev.

NV

New Hampshire

N.H.

NH

New Jersey

N.J.

NJ

New Mexico

N.M.

NM

New York

N.Y.

NY

North Carolina

N.C.

NC

North Dakota

N.D.

ND

Ohio

Ohio

OH

Oklahoma

Okla.

OK

Oregon

Ore.

OR

Pennsylvania

Pa.

PA

Puerto Rico

Puerto Rico

PR

Rhode Island

R.I.

RI

South Carolina

S.C.

SC

South Dakota

S.D.

SD

Tennessee

Tenn.

TN

Texas

Texas

TX

Trust Territories of the Pacific

Trust Territories

TT

Utah

Utah

UT

Vermont

Vt.

VT

Virginia

Va.

VA

Virgin Islands

Virgin Islands

VI

Washington

Wash.

WA

West Virginia

W.Va.

WV

Wisconsin

Wis.

WI

Wyoming

Wyo.

WY

Note: States names with five letters or fewer are never abbreviated. The names of states and territories outside the 48 contiguous US states are abbreviated only when used with a postal code.

Postal code placement: ZIP (Zone Improvement Program) codes follow the state code and are separated by a space: Los Alamitos, CA 90720. The Postal Service has expanded the original five-digit code to nine digits, known as ZIP+4. The added digits follow a hyphen appended to the original code: Los Alamitos, CA 90720-1314.

Canada

Province

Standard abbreviation

Postal abbreviation

Alberta

Alta.

AB

British Columbia

B.C.

BC

Manitoba

Man.

MB

New Brunswick

N.B.

NB

Newfoundland and Labrador

N.L.

NL

Northwest Territories

N.W.T.

NT

Nova Scotia

N.S.

NS

Nunavut

 

NU

Ontario

Ont.

ON

Prince Edward Island

P.E.I.

PE

Québec

Que.

QC

Saskatchewan

Sask.

SK

Yukon Territory

Yukon

YT

Note: Quebec used to be abbreviated P.Q. for Province du Québec, but this is now obsolete. Francophones in Québec often use the postal abbreviation Qc.

Postal code placement: Canada's postal code system is similar to the US ZIP code system. Postal codes are placed after the province code. The six-character codes are broken into two groups of three characters separated by a space. The format is letter, number, letter, space, number, letter, number—for example, Kingston, ON K1A 0S2.

United Kingdom

UK postal codes are placed after the country (England, Scotland, Northern Ireland, and Wales) and are separated by a space. Add the nation (UK) after the postal code. The six-character codes are usually broken into two groups of three characters separated by a space. The usual format is letter, letter, number, space, number, letter, letter—for example, Stirling, Scotland FK9 4LA, UK. However, some cities use variations on this format.

Europe

Postal codes are placed before the city name: D-4054 Nettetal, Germany. The number of digits varies among countries. The European postal union includes country prefixes with the postal codes. These prefixes, which are separated from the postal code by a hyphen, include

 

B

Belgium

CH

Switzerland

D

Germany

DK

Denmark

E

Spain

F

France

I

Italy

N

Norway

NL

Netherlands

S

Sweden

UK

United Kingdom

Include the state for all US cities except the following: Atlanta, Baltimore, Boston, Chicago, Dallas, Denver, Detroit, Honolulu, Indianapolis, Los Angeles, Miami, Minneapolis, New Orleans, New York, Philadelphia, Phoenix, Pittsburgh, St. Louis, Salt Lake City, San Diego, San Francisco, and Seattle.

Do not list state name or province for cities outside the US and Canada. For most cities located outside the US, list the nation after the city. However, do not include the nation for the following locations:

 

Amsterdam

Jerusalem

Taiwan

Athens

Rome

Munich

Bangkok

Kyoto

Tokyo

Barcelona

Seoul

Oslo

Beijing

London

Toronto

Berlin

Shanghai

Ottawa

Brussels

Madrid

Vienna

Budapest

Melbourne

Paris

Cairo

Stockholm

Warsaw

Copenhagen

Mexico City

Prague

Edinburgh

Sydney

Zurich

Geneva

Montreal

Reykjavik

Helsinki

Yukon

Rio de Janeiro

Hong Kong

Taipei

 

Istanbul

Moscow