Journalists, copy editors, and content creators constantly navigate the delicate balance between brevity and clarity in written communication. The Associated Press Stylebook provides the definitive standard for this pursuit, particularly regarding the formatting of state names. Understanding the precise rules for how to AP style abbreviate states is essential for producing professional, error-free content that meets industry expectations.
The Rationale Behind AP State Abbreviations
The primary driver for AP style abbreviations is the optimization of space and readability in tight columns without sacrificing comprehension. Unlike the official two-letter postal codes used by the United States Postal Service, AP abbreviations are designed specifically for journalistic prose. They utilize a combination of traditional state abbreviations and a standardized set that avoids periods to ensure clean, fast reading, whether in print or on a digital screen.
Standard Abbreviation Rules
For the majority of states, the AP style guide dictates the use of a traditional two-letter abbreviation that omits periods. This applies to states with names long enough to warrant shortening and is the most common format found in wire copy and professional publications. The list includes familiar codes such as AL, AK, AZ, AR, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MO, MT, NE, NV, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, and WY.
Exceptions for Borderline States
Not all states fit the two-letter pattern, and the AP style guide accounts for this with specific exceptions. States such as Iowa, Idaho, Alaska, and Hawaii are typically written out in full within the body of text to avoid awkward combinations of letters or simply to maintain a clean aesthetic. However, when space is at a premium—such as in charts, graphs, or tables—these states are abbreviated as IA, ID, AK, and HI respectively, following the same no-period convention.
Critical Distinction from Postal Codes
It is crucial to distinguish AP style abbreviations from the US Postal Service abbreviations, which include periods (e.g., N.Y. or N.C.). When addressing a physical letter or package, the USPS format is required for proper delivery. However, in any narrative text, article, or report following AP guidelines, the period-free versions (NY and NC) must be used. Conflating the two styles is a common error that undermines the professionalism of otherwise strong writing.
