How long is N-600K taking right now?
Each form has a published range for every office, and where yours is handled can change it by months.
N-600K · Application for Citizenship and Issuance of Certificate Under Section 322
Checked automatically
USCIS posts
2 to 4 months
New Orleans LA
See approval rates and backlogs by form →
N-600K by office - fastest first
Pick one to see its dates above.
- New Orleans LA2–4 mo
- Kansas City MO3.5–4 mo
- Fort Smith AR5–5.5 mo
- Hialeah FL5–5.5 mo
- Helena MT6–6.5 mo
- Columbus OH6.5–7 mo
Form N-600K at a glance
Of the 90 offices USCIS lists for Form N-600K, New Orleans LA posts the shortest time, 2 to 4 months, and Saint Louis MO the longest, 65 to 65.5 months (5.4 to 5.5 years).
ImmigraMate has recorded no change to the posted range for N-600K at New Orleans LA, now 2 to 4 months, since it began recording changes on September 17, 2026.
Forms decided at a local field office, where which office you are assigned to changes the answer by months.
USCIS publishes the time by which 80% and 93% of cases were completed. Confirm on USCIS's processing times page.
Questions about N-600K processing times
How long is Form N-600K taking right now?
For New Orleans LA, USCIS currently posts 2 to 4 months on Form N-600K. These are the figures USCIS published in October 2026. Of the 90 offices USCIS lists for Form N-600K, New Orleans LA posts the shortest time, 2 to 4 months, and Saint Louis MO the longest, 65 to 65.5 months (5.4 to 5.5 years).
What if my N-600K is taking longer than the posted time?
Once your case is older than the upper end of the posted range, 4 months for New Orleans LA, USCIS accepts a case inquiry about it as outside normal processing times. Check your case status first: a recent update may already answer the question.
What each case status meansIf a case inquiry does not move it, you can ask your member of Congress to contact USCIS about the case for you.
How a congressional inquiry works