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 66.5 months at Sacramento CA. 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 August 17, 2026 revision, 19 of these 90 entries had that date moved backward.
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 | January 31, 2025 |
| Albany NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 11.5–17 months−93.5 mo | April 27, 2025+2,849 d |
| Albuquerque NM | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 11–11.5 months | October 16, 2025 |
| Anchorage AK | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 16.5–17 months | May 08, 2025 |
| Atlanta GA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10.5–28.5 months | May 13, 2024 |
| Baltimore MD | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 16–16.5 months | May 22, 2025 |
| Boise ID | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–28.5 months−0.5 mo | May 14, 2024+18 d |
| Boston MA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 20–34.5 months+7.0 mo | November 05, 2023−221 d |
| Brooklyn NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 18.5–65.5 months+46.5 mo | April 08, 2021−1,427 d |
| Buffalo NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–16 months+4.5 mo | May 29, 2025−136 d |
| Burlington VT | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 8–16 months−12.5 mo | May 27, 2025+391 d |
| Charleston SC | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 7.5–8 months | February 09, 2026 |
| Charlotte Amalie VI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–28.5 months−0.5 mo | May 14, 2024+18 d |
| Charlotte NC | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 31.5–47 months | October 24, 2022 |
| Chicago IL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 37.5–64.5 months+23.0 mo | May 13, 2021−698 d |
| Christiansted VI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–28.5 months−0.5 mo | May 14, 2024+18 d |
| Cincinnati OH | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6.5–11.5 months | October 14, 2025 |
| Cleveland OH | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12–12.5 months | September 24, 2025 |
| Columbus OH | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6.5–7 months | March 08, 2026 |
| Cranbury NJ | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 17–19 months | February 18, 2025 |
| Dallas TX | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 22.5–27 months | June 27, 2024 |
| Denver CO | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6–11.5 months−6.0 mo | October 06, 2025+178 d |
| Des Moines IA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14.5–15 months | June 30, 2025 |
| Detroit MI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 21.5–25 months | August 20, 2024 |
| El Paso TX | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6.5–7 months | February 25, 2026 |
| Fort Myers FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 18.5–19 months | March 07, 2025 |
| Fort Smith AR | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 5–5.5 months | April 17, 2026 |
| Fresno CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6–14 months+7.5 mo | July 28, 2025−234 d |
| Greer SC | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 7–10.5 months+5.5 mo | November 12, 2025−174 d |
| Harlingen TX | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14.5–21.5 months+4.5 mo | December 07, 2024−131 d |
| Hartford CT | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12–14.5 months | July 13, 2025 |
| Helena MT | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6–6.5 months+0.5 mo | March 07, 2026−10 d |
| Hialeah FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 5–5.5 months | April 27, 2026 |
| Honolulu HI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 20–20.5 months−8.5 mo | January 23, 2025+272 d |
| Houston TX | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–10.5 months | November 17, 2025 |
| Imperial CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–28.5 months−0.5 mo | May 14, 2024+18 d |
| Indianapolis IN | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 40.5–51 months | June 19, 2022 |
| Jacksonville FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 7.5–8 months | February 12, 2026 |
| Kansas City MO | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 3.5–4 months | May 17, 2026 |
| Kendall FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12–18.5 months+6.0 mo | March 04, 2025−197 d |
| Las Vegas NV | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 25.5–26 months | July 20, 2024 |
| Lawrence MA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 20.5–27 months | June 16, 2024 |
| Long Island NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–20 months | January 14, 2025 |
| Los Angeles CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 13–13.5 months−8.0 mo | August 05, 2025+244 d |
| Los Angeles County CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 18.5–19 months | March 01, 2025 |
| Louisville KY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9–11 months−0.5 mo | October 21, 2025 |
| Manchester NH | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 5–6.5 months−0.5 mo | March 15, 2026 |
| Memphis TN | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–28.5 months−0.5 mo | May 14, 2024+18 d |
| Miami FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 19.5–34.5 months | November 14, 2023 |
| Milwaukee WI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 32.5–33 months−4.0 mo | January 04, 2024+142 d |
| Minneapolis-St. Paul MN | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 13–13.5 months | August 29, 2025 |
| Montgomery AL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 45.5–46 months+17.0 mo | December 12, 2022−501 d |
| Mount Laurel NJ | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9–17.5 months+4.5 mo | April 01, 2025−148 d |
| Nashville TN | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–28.5 months+16.0 mo | May 14, 2024−491 d |
| New Orleans LA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 6.5–7 months | March 14, 2026 |
| New York City NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 37–40.5 months−17.5 mo | May 11, 2023+531 d |
| Newark NJ | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 8.5–14 months | July 23, 2025 |
| Norfolk VA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 40.5–41 months | May 04, 2023 |
| Oakland Park FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 15.5–48.5 months | September 14, 2022 |
| Oklahoma City OK | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–28.5 months−0.5 mo | May 14, 2024+18 d |
| Omaha NE | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10.5–11 months | November 03, 2025 |
| Orlando FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 58–64.5 months | May 06, 2021 |
| Philadelphia PA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12–31 months+1.0 mo | February 27, 2024−20 d |
| Phoenix AZ | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 20–28.5 months | May 11, 2024 |
| Pittsburgh PA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–18 months+4.5 mo | March 26, 2025−138 d |
| Portland ME | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 18.5–19 months | March 03, 2025 |
| Portland OR | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 23–23.5 months | October 17, 2024 |
| Providence RI | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 21–21.5 months+16.0 mo | December 29, 2024−483 d |
| Queens NY | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 7.5–9 months | December 29, 2025 |
| Raleigh NC | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9–9.5 months | December 24, 2025 |
| Reno NV | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 14–28.5 months−0.5 mo | May 14, 2024+18 d |
| Sacramento CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 48.5–66.5 months | March 04, 2021 |
| Saint Louis MO | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 65–65.5 months | April 25, 2021 |
| Salt Lake City UT | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9–9.5 months | December 19, 2025 |
| San Antonio TX | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 26.5–27 months−20.0 mo | July 01, 2024+624 d |
| San Bernardino CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 7–18.5 months−4.5 mo | March 09, 2025+142 d |
| San Diego CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 29–34.5 months+5.0 mo | November 13, 2023−168 d |
| San Fernando Valley CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–18.5 months+8.5 mo | March 04, 2025−257 d |
| San Francisco CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 20.5–47 months | October 29, 2022 |
| San Jose CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 12–17 months−23.5 mo | April 16, 2025+707 d |
| San Juan PR | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 13.5–19 months+5.0 mo | February 19, 2025−166 d |
| Santa Ana CA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 17.5–24 months | September 29, 2024 |
| Seattle WA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 19–24.5 months−1.0 mo | September 13, 2024+33 d |
| Spokane WA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–10.5 months | November 15, 2025 |
| Tampa FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 9–9.5 months | December 05, 2025−7 d |
| Tucson AZ | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 13–13.5 months | August 15, 2025 |
| Washington DC | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 21.5–31.5 months−25.0 mo | February 08, 2024+759 d |
| West Palm Beach FL | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 7.5–11.5 months | October 03, 2025 |
| Wichita KS | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 11.5–12 months | October 14, 2025 |
| Yakima WA | 161B Application for Citizenship and Issuance of Certificate Under Section 322 | 10–13 months | August 27, 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 |
|---|---|---|---|---|
| 2026-08-18 | 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 |
| 2026-05-23 | April 21, 2026 → May 22, 2026 | 19 | 20 | 26 |
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