Greetings all CO N400 filers. I had my N400 interview April 18, 2024. Overall the interview/test was very straightforward and the officer was personable. A good experience and quite fast, around 30 min or so. Plan to be there around 30 min ahead of your scheduled time to give yourself a chance to get through security and get to the waiting area. I think the biggest stressor is likely traffic, so give yourself extra time. We were coming from the north end of the state, so we gave ourselves 2 hours to get there and that was about right.
Take-aways:
-Same day oath ceremonies no longer offered in Denver as of Jan 2024 unless you live 200 miles away from the office or there is some kind of emergency. I requested a same-day oath ceremony when the officer gave me this information. She said that they used to do this, but they don't offer it anymore. Something about not having enough staff who are qualified to do the ceremony around that day. She said that only in cases of an emergency would they be able to scramble one together or if the applicant's home is over 200 miles away. So if you live within 200 miles of the office, don't expect a same-day oath ceremony. Worth asking, but be prepared to have to come back for oath ceremony
-Sign up for electronic notices so you know well in advance when OC is - Even the USCIS officer commented on our CO post office delays. In a previous oath ceremony a few months prior, only half of the people showed up. They found out over half did not get their paper notices in the mail. She strongly advised signing up for e-notices through the online account, as that is much more reliable. I received my notice electronically the evening of my interview notifying me that my oath ceremony is 3 weeks later.
Hope this helps!