What Do I Capitalize In AP Style Headlines?
In AP Style, only the first word and proper nouns are capitalized in headlines.
Follow story style in spelling, but use numerals for all numbers and single quotes for quotation marks. Exception, US, UK, and UN (no periods) in all headlines.
For U.S. states in headlines, no periods for those abbreviated with two capital letters,
- NY, NY, NH, NM, NC, SC, ND, SD, and RI. Also DC.
All other states retain their periods in headlines,
- Mich., Mont., Conn.
For online subscribers so desiring, AP systems convert headlines to a version with all words capitalized.
See also AP Style Million, Billions, Trillions