How long is my form taking?
USCIS publishes a range per form and per office. Both matter — the same form can differ by months depending on where it is being handled.
Forms decided at a local field office, where which office you are assigned to changes the answer by months.
N-600 — Application for Certificate of Citizenship
3.5 to 8 months
Columbus OH
Estimated median
1.9 months
The published range is the slow tail, not the middle: USCIS's low figure is where about 80% of cases have finished and the high figure about 93%. So half of cases finish sooner than 1.9 months — three in four by 3.3, nine in ten by 7.6. An estimate from those two published anchors, not a figure USCIS publishes.
Charlotte Amalie VI
3–4 mo
Median about 2.7 mo · 75% by 3 mo · 90% by 3.9 mo
Christiansted VI
4–4.5 mo
Median about 3.8 mo · 75% by 4 mo · 90% by 4.5 mo
Fort Smith AR
4–5.5 mo
Median about 3.5 mo · 75% by 3.9 mo · 90% by 5.4 mo
Providence RI
3.5–6 mo
Median about 2.6 mo · 75% by 3.4 mo · 90% by 5.8 mo
Cincinnati OH
4–7.5 mo
Median about 2.8 mo · 75% by 3.8 mo · 90% by 7.2 mo
Columbus OH
3.5–8 mo
Median about 1.9 mo · 75% by 3.3 mo · 90% by 7.6 mo
Across 90 offices
- Fastest
- Charlotte Amalie VI3–4 mo
- Slowest
- Boston MA15.5–58.5 mo (1.3–4.9 yrs)
Ranges are as published by USCIS: the low figure is where about 80% of cases have finished and the high figure about 93%. Confirm on Check on USCIS's processing times page.