If I submitted my CSU application and did not mark the EOP interest question with a YES, is it too late to apply to EOP?

No, it is not too late to apply to EOP.

You need to log back into your Cal State Apply account and click on the Apply Online tab. Then click on the Supporting Information Tile and then on the Educational Opportunity Program (EOP) link. Follow the online prompts for the rest of the application. Remember to hit “SUBMIT” upon completion.

Please note, the CSUSB EOP Application deadline is January 15, 2021.