USCIS publishes a processing time for Form N-600K at 90 offices. The published upper bound runs from 4.0 months at Kansas City MO to 79.5 months at Portland OR. 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. Nothing changed here at the October 19, 2026 revision.
N-600K processing time at each USCIS office that adjudicates it
| Office | Subtype | Processing time | Case inquiry date |
|---|---|---|---|
| Agana GU | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 17.5–19.5 months | March 17, 2025 |
| Albany NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 11.5–15.5 months | July 22, 2025 |
| Albuquerque NM | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 11–11.5 months | November 30, 2025 |
| Anchorage AK | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 16.5–17 months | June 22, 2025 |
| Atlanta GA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10.5–28.5 months | June 27, 2024 |
| Baltimore MD | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 16–17 months | June 14, 2025 |
| Boise ID | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–29 months | June 07, 2024 |
| Boston MA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 20.5–34.5 months | December 20, 2023 |
| Brooklyn NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 18.5–65.5 months | May 23, 2021 |
| Buffalo NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–18.5 months | April 26, 2025 |
| Burlington VT | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9–17 months | June 14, 2025 |
| Charleston SC | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 7.5–8 months | March 26, 2026 |
| Charlotte Amalie VI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–29 months | June 07, 2024 |
| Charlotte NC | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 11.5–47 months | December 08, 2022 |
| Chicago IL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 41.5–59 months | December 10, 2021 |
| Christiansted VI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–29 months | June 07, 2024 |
| Cincinnati OH | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 11.5–22 months | January 03, 2025 |
| Cleveland OH | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12–12.5 months | November 08, 2025 |
| Columbus OH | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6.5–7 months | April 22, 2026 |
| Cranbury NJ | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 17–19 months | April 04, 2025 |
| Dallas TX | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 27.5–28 months | July 22, 2024 |
| Denver CO | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 8.5–11.5 months | November 20, 2025 |
| Des Moines IA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14.5–15 months | August 14, 2025 |
| Detroit MI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 21.5–25 months | October 04, 2024 |
| El Paso TX | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6.5–7 months | April 11, 2026 |
| Fort Myers FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 18.5–19 months | April 21, 2025 |
| Fort Smith AR | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 5–5.5 months | June 01, 2026 |
| Fresno CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6.5–14 months | September 11, 2025 |
| Greer SC | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 7–10.5 months | December 27, 2025 |
| Harlingen TX | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 13–21.5 months | January 21, 2025 |
| Hartford CT | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12–15.5 months | July 19, 2025 |
| Helena MT | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6–6.5 months | April 21, 2026 |
| Hialeah FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 5–5.5 months | June 11, 2026 |
| Honolulu HI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 20–20.5 months | March 09, 2025 |
| Houston TX | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–10.5 months | January 01, 2026 |
| Imperial CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–29 months | June 07, 2024 |
| Indianapolis IN | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 36–51 months | August 03, 2022 |
| Jacksonville FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 17–17.5 months | June 02, 2025 |
| Kansas City MO | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 3.5–4 months | July 01, 2026 |
| Kendall FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12–18.5 months | April 18, 2025 |
| Las Vegas NV | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 25.5–26 months | September 03, 2024 |
| Lawrence MA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 22.5–31 months | April 14, 2024 |
| Long Island NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 13.5–17 months | June 06, 2025 |
| Los Angeles CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 13–13.5 months | September 19, 2025 |
| Los Angeles County CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 18.5–19 months | April 15, 2025 |
| Louisville KY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9–11 months | December 05, 2025 |
| Manchester NH | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 11.5–41 months | June 13, 2023 |
| Memphis TN | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 65–65.5 months | June 13, 2021 |
| Miami FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 20.5–30.5 months | April 28, 2024 |
| Milwaukee WI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 32.5–33 months | February 18, 2024 |
| Minneapolis-St. Paul MN | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 13–13.5 months | October 13, 2025 |
| Montgomery AL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 45.5–46 months | January 26, 2023 |
| Mount Laurel NJ | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–17.5 months | May 16, 2025 |
| Nashville TN | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–29 months | June 07, 2024 |
| New Orleans LA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 2–4 months | July 01, 2026 |
| New York City NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 38.5–58 months | January 11, 2022 |
| Newark NJ | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 8–11.5 months | November 26, 2025 |
| Norfolk VA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12–40.5 months | June 18, 2023 |
| Oakland Park FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 17.5–48.5 months | October 29, 2022 |
| Oklahoma City OK | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–29 months | June 07, 2024 |
| Omaha NE | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10.5–11 months | December 18, 2025 |
| Orlando FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 58–63.5 months | July 26, 2021 |
| Philadelphia PA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12.5–33.5 months | January 27, 2024 |
| Phoenix AZ | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 11.5–22.5 months | December 21, 2024 |
| Pittsburgh PA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12.5–18 months | May 10, 2025 |
| Portland ME | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 18.5–26.5 months | August 29, 2024 |
| Portland OR | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 29.5–79.5 months | March 26, 2020 |
| Providence RI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 21–21.5 months | February 12, 2025 |
| Queens NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9–13 months | October 05, 2025 |
| Raleigh NC | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9–9.5 months | February 07, 2026 |
| Reno NV | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–29 months | June 07, 2024 |
| Sacramento CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 48.5–66.5 months | April 18, 2021 |
| Saint Louis MO | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 65–65.5 months | June 09, 2021 |
| Salt Lake City UT | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9–9.5 months | February 02, 2026 |
| San Antonio TX | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 26.5–43 months | April 04, 2023 |
| San Bernardino CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9.5–21.5 months | January 24, 2025 |
| San Diego CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 29–34.5 months | December 28, 2023 |
| San Fernando Valley CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 8.5–18.5 months | April 18, 2025 |
| San Francisco CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 20.5–47 months | December 13, 2022 |
| San Jose CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12.5–17 months | May 31, 2025 |
| San Juan PR | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–19 months | April 05, 2025 |
| Santa Ana CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 17–17.5 months | May 28, 2025 |
| Seattle WA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 22.5–25.5 months | September 26, 2024 |
| Spokane WA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–23.5 months | November 28, 2024 |
| Tampa FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9.5–10 months | January 02, 2026 |
| Tucson AZ | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 13–13.5 months | September 29, 2025 |
| Washington DC | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 25.5–38 months | September 10, 2023 |
| West Palm Beach FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 7.5–12.5 months | October 21, 2025 |
| Wichita KS | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 11.5–12 months | November 28, 2025 |
| Yakima WA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9.5–13 months | October 11, 2025 |
How to read the N-600K figures
Processing time is the range USCIS itself publishes for Form N-600K. 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-600K
Every revision this archive has recorded that touched Form N-600K. 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 | 29 | 29 | 10 |
| 2026-08-18 | July 15, 2026 → August 17, 2026 | 19 | 18 | 21 |
| 2026-07-16 | June 23, 2026 → July 15, 2026 | 23 | 23 | 16 |
| 2026-06-24 | May 22, 2026 → June 23, 2026 | 24 | 26 | 20 |
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-600K 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-600
← All forms and offices, and what changed at the last revision