USCIS publishes a processing time for Form N-600 at 90 offices. The published upper bound runs from 4.0 months at Charlotte Amalie VI to 52.5 months at Memphis TN. Each office also carries a case inquiry date — the date USCIS uses to decide whether a case is outside normal processing times. If the receipt date on your Form I-797C receipt notice is earlier than it, USCIS will accept a case inquiry (a service request) on the case; if it is later, USCIS treats the case as still within normal processing times. At the September 17, 2026 revision, 56 of these 90 entries had that date moved backward.
N-600 processing time at each USCIS office that adjudicates it
| Office | Subtype | Processing time | Case inquiry date |
|---|---|---|---|
| Agana GU | 161A Application for recognition of U.S. citizenship | 12–20 months | February 14, 2025 |
| Albany NY | 161A Application for recognition of U.S. citizenship | 20–27.5 months+1.5 mo | June 25, 2024−53 d |
| Albuquerque NM | 161A Application for recognition of U.S. citizenship | 11–12 months | October 14, 2025 |
| Anchorage AK | 161A Application for recognition of U.S. citizenship | 9–11.5 months−3.0 mo | November 03, 2025+101 d |
| Atlanta GA | 161A Application for recognition of U.S. citizenship | 6–11.5 months+1.5 mo | October 25, 2025−54 d |
| Baltimore MD | 161A Application for recognition of U.S. citizenship | 12–15.5 months+1.0 mo | June 27, 2025−39 d |
| Boise ID | 161A Application for recognition of U.S. citizenship | 7.5–8 months+0.5 mo | February 15, 2026−7 d |
| Boston MA | 161A Application for recognition of U.S. citizenship | 14–25 months−33.5 mo | September 11, 2024+1,010 d |
| Brooklyn NY | 161A Application for recognition of U.S. citizenship | 10.5–14 months+3.0 mo | August 16, 2025−84 d |
| Buffalo NY | 161A Application for recognition of U.S. citizenship | 11.5–13.5 months+0.5 mo | September 05, 2025−11 d |
| Burlington VT | 161A Application for recognition of U.S. citizenship | 10.5–11 months+0.5 mo | November 09, 2025−26 d |
| Charleston SC | 161A Application for recognition of U.S. citizenship | 7–9.5 months | January 03, 2026 |
| Charlotte Amalie VI | 161A Application for recognition of U.S. citizenship | 3–4 months | June 11, 2026 |
| Charlotte NC | 161A Application for recognition of U.S. citizenship | 12.5–20 months+7.0 mo | February 21, 2025−204 d |
| Chicago IL | 161A Application for recognition of U.S. citizenship | 11–15.5 months+0.5 mo | June 26, 2025−18 d |
| Christiansted VI | 161A Application for recognition of U.S. citizenship | 4–4.5 months | June 11, 2026 |
| Cincinnati OH | 161A Application for recognition of U.S. citizenship | 4–7.5 months | March 01, 2026+3 d |
| Cleveland OH | 161A Application for recognition of U.S. citizenship | 18.5–20 months | February 14, 2025 |
| Columbus OH | 161A Application for recognition of U.S. citizenship | 4–8.5 months+0.5 mo | January 26, 2026−12 d |
| Cranbury NJ | 161A Application for recognition of U.S. citizenship | 6–8.5 months+0.5 mo | February 05, 2026−16 d |
| Dallas TX | 161A Application for recognition of U.S. citizenship | 8.5–11 months+1.5 mo | November 14, 2025−52 d |
| Denver CO | 161A Application for recognition of U.S. citizenship | 13.5–17.5 months−1.0 mo | April 25, 2025+17 d |
| Des Moines IA | 161A Application for recognition of U.S. citizenship | 12–16 months+1.0 mo | June 14, 2025−28 d |
| Detroit MI | 161A Application for recognition of U.S. citizenship | 10.5–23.5 months−1.5 mo | November 05, 2024+47 d |
| El Paso TX | 161A Application for recognition of U.S. citizenship | 25.5–30 months+1.0 mo | April 10, 2024−37 d |
| Fort Myers FL | 161A Application for recognition of U.S. citizenship | 10.5–12.5 months+0.5 mo | October 08, 2025−4 d |
| Fort Smith AR | 161A Application for recognition of U.S. citizenship | 5–11.5 months+6.0 mo | October 31, 2025−189 d |
| Fresno CA | 161A Application for recognition of U.S. citizenship | 11–13 months | September 15, 2025−4 d |
| Greer SC | 161A Application for recognition of U.S. citizenship | 6.5–8 months | February 15, 2026 |
| Harlingen TX | 161A Application for recognition of U.S. citizenship | 11.5–21 months | January 16, 2025 |
| Hartford CT | 161A Application for recognition of U.S. citizenship | 7–10 months+0.5 mo | December 23, 2025−5 d |
| Helena MT | 161A Application for recognition of U.S. citizenship | 12–16 months+0.5 mo | June 13, 2025−17 d |
| Hialeah FL | 161A Application for recognition of U.S. citizenship | 7–9.5 months+0.5 mo | December 28, 2025−12 d |
| Honolulu HI | 161A Application for recognition of U.S. citizenship | 11.5–18 months+2.5 mo | April 17, 2025−73 d |
| Houston TX | 161A Application for recognition of U.S. citizenship | 10.5–12.5 months | October 02, 2025+8 d |
| Imperial CA | 161A Application for recognition of U.S. citizenship | 10.5–15 months | July 18, 2025 |
| Indianapolis IN | 161A Application for recognition of U.S. citizenship | 6.5–10.5 months+0.5 mo | November 28, 2025−20 d |
| Jacksonville FL | 161A Application for recognition of U.S. citizenship | 12.5–15.5 months−2.5 mo | July 07, 2025+79 d |
| Kansas City MO | 161A Application for recognition of U.S. citizenship | 14.5–23 months−0.5 mo | November 10, 2024+9 d |
| Kendall FL | 161A Application for recognition of U.S. citizenship | 8–11.5 months | November 07, 2025+14 d |
| Las Vegas NV | 161A Application for recognition of U.S. citizenship | 9.5–10 months | January 05, 2026 |
| Lawrence MA | 161A Application for recognition of U.S. citizenship | 7.5–10.5 months+1.0 mo | December 04, 2025−26 d |
| Long Island NY | 161A Application for recognition of U.S. citizenship | 10–11 months | November 13, 2025−5 d |
| Los Angeles CA | 161A Application for recognition of U.S. citizenship | 9.5–14.5 months+1.5 mo | August 02, 2025−46 d |
| Los Angeles County CA | 161A Application for recognition of U.S. citizenship | 9–11 months | November 17, 2025−4 d |
| Louisville KY | 161A Application for recognition of U.S. citizenship | 8–11 months | November 19, 2025−2 d |
| Manchester NH | 161A Application for recognition of U.S. citizenship | 5–7 months | March 20, 2026 |
| Memphis TN | 161A Application for recognition of U.S. citizenship | 15.5–52.5 months+19.0 mo | June 09, 2022−577 d |
| Miami FL | 161A Application for recognition of U.S. citizenship | 11.5–14.5 months−5.0 mo | August 01, 2025+155 d |
| Milwaukee WI | 161A Application for recognition of U.S. citizenship | 15.5–26.5 months+6.5 mo | July 27, 2024−208 d |
| Minneapolis-St. Paul MN | 161A Application for recognition of U.S. citizenship | 22–30 months−0.5 mo | April 22, 2024 |
| Montgomery AL | 161A Application for recognition of U.S. citizenship | 10.5–13 months+1.0 mo | September 17, 2025−26 d |
| Mount Laurel NJ | 161A Application for recognition of U.S. citizenship | 10.5–16.5 months+4.0 mo | May 29, 2025−124 d |
| Nashville TN | 161A Application for recognition of U.S. citizenship | 10–11.5 months | October 31, 2025−2 d |
| New Orleans LA | 161A Application for recognition of U.S. citizenship | 10–12 months | October 13, 2025−8 d |
| New York City NY | 161A Application for recognition of U.S. citizenship | 7.5–12 months+1.5 mo | October 09, 2025−49 d |
| Newark NJ | 161A Application for recognition of U.S. citizenship | 7.5–9.5 months+0.5 mo | December 27, 2025−12 d |
| Norfolk VA | 161A Application for recognition of U.S. citizenship | 10–14 months+1.0 mo | August 18, 2025−29 d |
| Oakland Park FL | 161A Application for recognition of U.S. citizenship | 8.5–14.5 months | July 25, 2025−5 d |
| Oklahoma City OK | 161A Application for recognition of U.S. citizenship | 10.5–16.5 months−6.5 mo | June 03, 2025+200 d |
| Omaha NE | 161A Application for recognition of U.S. citizenship | 9.5–34.5 months | December 02, 2023 |
| Orlando FL | 161A Application for recognition of U.S. citizenship | 14.5–19 months+3.0 mo | March 21, 2025−84 d |
| Philadelphia PA | 161A Application for recognition of U.S. citizenship | 8.5–10.5 months+0.5 mo | November 28, 2025−22 d |
| Phoenix AZ | 161A Application for recognition of U.S. citizenship | 10–12 months | October 17, 2025 |
| Pittsburgh PA | 161A Application for recognition of U.S. citizenship | 10–13.5 months+1.5 mo | September 02, 2025−44 d |
| Portland ME | 161A Application for recognition of U.S. citizenship | 6–18 months | April 17, 2025 |
| Portland OR | 161A Application for recognition of U.S. citizenship | 6–9.5 months | January 06, 2026 |
| Providence RI | 161A Application for recognition of U.S. citizenship | 4–6.5 months+0.5 mo | March 27, 2026−20 d |
| Queens NY | 161A Application for recognition of U.S. citizenship | 7.5–10 months+0.5 mo | December 19, 2025−9 d |
| Raleigh NC | 161A Application for recognition of U.S. citizenship | 12.5–32 months | February 13, 2024 |
| Reno NV | 161A Application for recognition of U.S. citizenship | 17–17.5 months | May 10, 2025 |
| Sacramento CA | 161A Application for recognition of U.S. citizenship | 9.5–23 months+13.5 mo | November 20, 2024−403 d |
| Saint Louis MO | 161A Application for recognition of U.S. citizenship | 12–19 months+1.5 mo | March 23, 2025−46 d |
| Salt Lake City UT | 161A Application for recognition of U.S. citizenship | 14.5–21.5 months | December 24, 2024 |
| San Antonio TX | 161A Application for recognition of U.S. citizenship | 10–12 months+0.5 mo | October 24, 2025−3 d |
| San Bernardino CA | 161A Application for recognition of U.S. citizenship | 11–12.5 months+0.5 mo | October 08, 2025−3 d |
| San Diego CA | 161A Application for recognition of U.S. citizenship | 14–25 months−1.0 mo | September 10, 2024+32 d |
| San Fernando Valley CA | 161A Application for recognition of U.S. citizenship | 4.5–10 months | December 15, 2025−3 d |
| San Francisco CA | 161A Application for recognition of U.S. citizenship | 13–17.5 months+0.5 mo | April 29, 2025−22 d |
| San Jose CA | 161A Application for recognition of U.S. citizenship | 9–12 months+1.0 mo | October 10, 2025−39 d |
| San Juan PR | 161A Application for recognition of U.S. citizenship | 10.5–13.5 months+1.0 mo | September 06, 2025−22 d |
| Santa Ana CA | 161A Application for recognition of U.S. citizenship | 12–14 months+0.5 mo | August 22, 2025−16 d |
| Seattle WA | 161A Application for recognition of U.S. citizenship | 14–20 months | February 19, 2025−0 d |
| Spokane WA | 161A Application for recognition of U.S. citizenship | 13.5–15.5 months+2.0 mo | July 02, 2025−53 d |
| Tampa FL | 161A Application for recognition of U.S. citizenship | 9–11 months | November 09, 2025 |
| Tucson AZ | 161A Application for recognition of U.S. citizenship | 10.5–12.5 months+0.5 mo | October 05, 2025−8 d |
| Washington DC | 161A Application for recognition of U.S. citizenship | 11–17 months+5.5 mo | May 15, 2025−166 d |
| West Palm Beach FL | 161A Application for recognition of U.S. citizenship | 13–15.5 months+2.5 mo | July 07, 2025−64 d |
| Wichita KS | 161A Application for recognition of U.S. citizenship | 10.5–11.5 months | November 02, 2025 |
| Yakima WA | 161A Application for recognition of U.S. citizenship | 9.5–13 months+3.0 mo | September 09, 2025−104 d |
How to read the N-600 figures
Processing time is the range USCIS itself publishes for Form N-600. It is an estimate of how long the agency is taking overall, not a measurement of any individual case, and USCIS revises it roughly monthly without announcing the change.
Case inquiry date is the one that decides what you can do. Find your office in the table above and compare that date against the receipt date printed on your Form I-797C receipt notice. If your receipt date is earlier, USCIS treats the case as outside normal processing times and will accept a case inquiry, also called a service request. If it is later, USCIS treats the case as still within normal processing times and will not act on an inquiry.
The coloured figures show what moved at the most recent revision. Next to a processing time, a red figure means USCIS raised the published upper bound. Next to a case inquiry date, a red figure means the date moved backward — cases that had become eligible to inquire are once again treated as within normal processing times.
What USCIS changed for N-600
Every revision this archive has recorded that touched Form N-600. USCIS publishes no history of its own revisions, so this is the only record that these figures were ever different.
| Observed | USCIS posting date | Inquiry date moved back | Slower | Faster |
|---|---|---|---|---|
| 2026-09-18 | August 17, 2026 → September 17, 2026 | 56 | 48 | 10 |
| 2026-08-18 | July 15, 2026 → August 17, 2026 | 51 | 42 | 12 |
| 2026-07-16 | June 23, 2026 → July 15, 2026 | 50 | 43 | 10 |
| 2026-06-24 | May 22, 2026 → June 23, 2026 | 47 | 34 | 13 |
Get alerted when this changes
USCIS revises these figures without notice and announces nothing. Tell us which office is handling your case for Form N-600 and we will email you when that exact combination moves — never for the routine daily shift.
We send one email asking you to confirm. Nothing else is sent until you click it. Every alert has a one-click unsubscribe.
Processing times for other forms
Every form USCIS publishes a processing time for.
I-90 I-102 I-129 I-129CW I-129F I-130 I-131 I-140 I-212 I-360 I-407 I-485 I-526 I-526(L) I-526E I-539 I-600 I-600A I-600A3 I-601 I-601A I-612 I-730 I-751 I-765 I-765V I-800 I-800A I-800A3 I-817 I-821 I-821D I-824 I-829 I-914 I-918 I-929 I-956 I-956F N-400 N-565 N-600K
← All forms and offices, and what changed at the last revision