USCIS · FORM N-400 · FIELD OFFICE STL
N-400 at Saint Louis MO
Application for Naturalization.
12.5–14 monthspublished processing time
38 of 90offices, ordered from shortest published time
August 29, 2025receipt date for a case inquiry
How USCIS describes these numbers: “We generally process cases in the order we receive them. This processing time is based on how long it took us to complete 80% of adjudicated cases over the past six months. Each case is unique, and some cases may take longer than others. Processing times should be used as a reference point, not an absolute measure of how long your case will take to be completed.”
Source: USCIS, Check Case Processing Times (N-400, Application for Naturalization, Saint Louis MO), published September 17, 2026; data from March 2026 to August 2026. Recorded weekly by greencardline since October 17, 2026. What these numbers mean.
USCIS quarterly counts for this office
| Quarter | Received | Approved | Denied | Pending at end of quarter |
|---|---|---|---|---|
| FY2024 Q1 | 949 | 1,140 | 83 | 1,853 |
| FY2024 Q3 | 1,023 | 827 | 67 | 2,271 |
| FY2024 Q4 | 1,199 | 1,033 | 57 | 2,359 |
| FY2025 Q1 | 1,287 | 707 | 33 | 2,896 |
| FY2025 Q2 | 1,366 | 864 | 58 | 3,321 |
| FY2025 Q3 | 1,200 | 1,094 | 74 | 3,405 |
| FY2025 Q4 | 1,200 | 1,911 | 84 | 2,612 |
| FY2026 Q2 | 862 | 860 | 58 | 2,699 |
| FY2026 Q3 | 923 | 278 | 61 | 3,318 |
Source: USCIS performance data for Form N-400 by field office (each quarter links to its file on uscis.gov). Totals across all categories of N-400 at this office. "Withheld" means USCIS suppressed a small number.
All 90 offices for N-400
- San Juan PRSAJ9.5–11 months
- Cranbury NJNJC9–12 months
- Helena MTHEL9.5–11.5 months
- Montgomery ALMGA9.5–12 months
- Hialeah FLHIA9.5–12.5 months
- Burlington VTSTA10.5–12 months
- Cincinnati OHCIN9.5–13 months
- New York City NYNYC10–12.5 months
- Albany NYALB10–13 months
- Providence RIPRO10–13 months
- Greer SCGRR10–13.5 months
- Kendall FLKND10–13.5 months
- Fort Smith ARFSA11–13 months
- Manchester NHMAN10.5–13.5 months
- Norfolk VANOR10.5–13.5 months
- Columbus OHCLM10.5–14 months
- Los Angeles CALOS10.5–14 months
- Los Angeles County CALAC10.5–14 months
- Mount Laurel NJMTL10–14.5 months
- Spokane WASPO11.5–13 months
- Cleveland OHCLE10.5–14.5 months
- Louisville KYLOU10.5–14.5 months
- Miami FLMIA10–15 months
- Phoenix AZPHO12–13 months
- San Antonio TXSNA11.5–13.5 months
- Charlotte NCCLT11–14.5 months
- Hartford CTHAR11.5–14 months
- Brooklyn NYBNY11–15 months
- Houston TXHOU12–14 months
- Pittsburgh PAPIT11.5–14.5 months
- Queens NYQNS10.5–15.5 months
- Tucson AZTUC12–14 months
- Washington DCWAS11.5–14.5 months
- Charleston SCCHL11.5–15 months
- Charlotte Amalie VICHA11.5–15 months
- Philadelphia PAPHI11.5–15 months
- Reno NVREN11.5–15 months
- Saint Louis MOSTL12.5–14 months
- West Palm Beach FLWPB10–16.5 months
- Christiansted VICHR11.5–15.5 months
- Newark NJNEW11.5–15.5 months
- Omaha NEOMA12.5–14.5 months
- Harlingen TXHLG11.5–16 months
- Kansas City MOKAN12.5–15 months
- El Paso TXELP13–15 months
- Memphis TNMEM12–16 months
- Raleigh NCRAL12–16 months
- Oklahoma City OKOKC13–15.5 months
- San Fernando Valley CASFV13–15.5 months
- Boston MABOS13.5–15.5 months
- Honolulu HIHHW12.5–16.5 months
- Las Vegas NVLVG13–16 months
- Long Island NYLNY12–17 months
- Seattle WASEA13.5–15.5 months
- Yakima WAYAK13.5–15.5 months
- Dallas TXDAL13–16.5 months
- Detroit MIDET13–16.5 months
- New Orleans LANOL12.5–17 months
- Salt Lake City UTSLC13.5–16 months
- Des Moines IADSM13.5–16.5 months
- Nashville TNNTN13–17 months
- Tampa FLTAM13.5–16.5 months
- Albuquerque NMABQ13–17.5 months
- Atlanta GAATL13.5–17 months
- Indianapolis ININP14–16.5 months
- San Bernardino CASBD13–17.5 months
- Santa Ana CASAA14–17 months
- Wichita KSWIC13–18 months
- Agana GUAGA13–18.5 months
- Anchorage AKANC12.5–19 months
- Buffalo NYBUF14.5–17 months
- Milwaukee WIMIL14–17.5 months
- Oakland Park FLOKL12.5–19 months
- Denver CODEN14–18 months
- Portland ORPOO14.5–17.5 months
- Boise IDBOI15–17.5 months
- Chicago ILCHI13–19.5 months
- Imperial CAIMP14.5–18 months
- Orlando FLORL13.5–19 months
- Jacksonville FLJAC15–18 months
- Portland MEPOM14.5–19 months
- Minneapolis-St. Paul MNSPM14.5–20 months
- Fort Myers FLOFM15.5–19.5 months
- Fresno CAFRE15.5–19.5 months
- Baltimore MDBAL15–20.5 months
- San Francisco CASFR14.5–22.5 months
- Lawrence MALAW18–20 months
- San Diego CASND15.5–23 months
- Sacramento CASAC16–24 months
- San Jose CASNJ16–31.5 months