Saint Louis MO — N-400 Naturalization Processing Time
USCIS reports 80% of Application for Naturalization cases processed through Saint Louis MO are completed within 12.5 months, per USCIS's own processing-times data.
⚠ This figure may be out of date — check USCIS's official tool for the current number.
Processing office: Saint Louis MO. Figure from USCIS's official processing times tool — check your own case's current estimate directly at egov.uscis.gov/processing-times, since USCIS updates these monthly and your specific receipt date affects where you fall in the range.
Saint Louis MO is faster than 39 of the 90 Naturalization locations in this dataset and slower than 44 — exactly the median of 12.5 months months.
Which counties this office serves
123 counties route to Saint Louis MO in USCIS's own office locator. If your county is listed here, this is the office whose processing time applies to your case.
IL: Adams, Alexander, Bond, Brown, Calhoun, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Crawford, Cumberland, De Witt, Douglas, Edgar, Edwards, Effingham, Fayette, Ford, Franklin, Fulton, Gallatin, Greene, Hamilton, Hardin, Iroquois, Jackson, Jasper, Jefferson, Jersey, Johnson, Kankakee, Lawrence, Livingston, Logan, Macon, Macoupin, Madison, Marion, Marshall, Mason, Massac, McLean, Menard, Monroe, Montgomery, Morgan, Moultrie, Peoria, Perry, Piatt, Pike, Pope, Pulaski, Putnam, Randolph, Richland, Saline, Sangamon, Scott, Shelby, St. Clair, Stark, Tazewell, Union, Vermilion, Wabash, Washington, Wayne, White, Williamson, Woodford · MO: Adair, Audrain, Bollinger, Butler, Cape Girardeau, Carter, Chariton, Clark, Crawford, Dent, Dunklin, Franklin, Gasconade, Iron, Jefferson, Knox, Lewis, Lincoln, Linn, Macon, Madison, Maries, Marion, Mississippi, Monroe, Montgomery, New Madrid, Pemiscot, Perry, Phelps, Pike, Ralls, Randolph, Reynolds, Ripley, Saint Charles, Schuyler, Scotland, Scott, Shannon, Shelby, St. Francois, St. Louis, St. Louis (city), Ste. Genevieve, Stoddard, Warren, Washington, Wayne
Other offices, same form
Other forms, same office
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