STATE NAMES

Follow these Guidelines from the AP Stylebook:

STANDING ALONE: Spell out the names of the 50 U.S. states when they stand alone in textual material. Use the two-letter Postal Service abbreviations only with full addresses, which include a ZIP code.

EIGHT NOT ABBREVIATED: The names of eight states are never abbreviated in datelines or text: Alaska, Hawaii, Idaho, Iowa, Maine, Ohio, Texas and Utah. (Memory Aid: Spell out the names of the two states that are not part of the contiguous United States and of the continental states that are five letters or fewer.)

ABBREVIATIONS REQUIRED: Use the state abbreviations listed in this section:

Following are the state abbreviations: In datelines, city names are written in all caps. The following U.S. cities stand alone without being followed by the state:
Ala. Md. N.D.
Ariz. Mass. Okla.
Ark. Mich. Ore.
Calif. Minn. Pa.
Colo. Miss. RI.
Conn. Mo. S.C.
Del. Mont. S.D.
Fla. Neb. Tenn.
Ga. Nev. Vt.
Ill. N.H. Va.
Ind. N.J. Wash.
Kan. N.M. W.Va.
Ky. N.Y. Wis.
La. N.C. Wyo.
 

ATLANTA
BALTIMORE
BOSTON
CHICAGO
CINCINNATI
CLEVELAND
DALLAS
DENVER
DETROIT
HONOLULU
HOUSTON
INDIANAPOLIS
LAS VEGAS
LOS ANGELES
  (or HOLLYWOOD in stories
  about films or the film industry)

MIAMI
MILWAUKEE
MINNEAPOLIS
NEW ORLEANS
NEW YORK
OKLAHOMA CITY
PHILADELPHIA
PHOENIX
PITTSBURGH
ST. LOUIS
SALT LAKE CITY
SAN ANTONIO
SAN DIEGO
SAN FRANCISCO
SEATTLE
WASHINGTON

PUNCTUATION: Place one comma between the city and the state name, and another comma after the state name, unless ending a sentence or indicating a dateline. Examples:

MISCELLANEOUS: Use New York state when necessary to distinguish the state from New York City.
Use state of Washington or Washington state when necessary to distinguish the state from the District of Columbia.
(Washington State is the name of a university in the state of Washington.)