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Processing times / I-485 /

USCIS · FORM I-485 · FIELD OFFICE STL

I-485 at Saint Louis MO

Family-based adjustment applications.

12–25 monthspublished processing time
18 of 90offices, ordered from shortest published time
September 22, 2024receipt 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 (I-485, Family-based adjustment applications, 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

QuarterReceivedApprovedDeniedPending at end of quarter
FY2024 Q1847496183,342
FY2024 Q38981,096193,711
FY2024 Q4893595223,609
FY2025 Q11,269507134,161
FY2025 Q21,072686214,413
FY2025 Q31,2491,450214,232
FY2025 Q41,2151,449294,409
FY2026 Q21,267615245,641
FY2026 Q31,529386296,290

Source: USCIS performance data for Form I-485 by field office (each quarter links to its file on uscis.gov). Totals across all categories of I-485 at this office. "Withheld" means USCIS suppressed a small number.

All 90 offices for I-485