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USCIS processing times

I-485 processing time at the Saint Louis, MO field office

The current processing time for family-based green card (adjustment of status) applications at the Saint Louis, MO field office, and every change USCIS has published since May 2022.

Data as of: USCIS update:
80% of cases decided within12 months
93% of cases decided within25 months
Case inquiry receipt dateSep 21, 2024You can ask about cases received before Sep 21, 2024
Rank among offices8th of 901st is the fastest
Change over 12 monthsup 2 monthsOct 16, 2025: 10 months

USCIS last updated this figure on Sep 17, 2026: 80% of family-based I-485 applications at the Saint Louis, MO field office were decided within 12 months, and 93% within 25 months. Both numbers come from cases USCIS finished over the previous six months, so they describe how long recent applicants waited, not a deadline for your case.

Saint Louis, MO ranks 8th of 90 field offices, where 1st is the fastest. The median office is at 16 months. That puts Saint Louis, MO 4 months faster than the median.

A year ago, on Oct 16, 2025, the figure was 10 months. It's up 2 months since. Since USCIS moved to the 80% measure in May 2022, Saint Louis, MO has ranged from 8.5 months (Oct 2025) to 16 months (Feb 2023).

You can ask USCIS about a case once it's older than the 93% figure. As of Oct 16, 2026, that meant a receipt date before Sep 21, 2024. The cutoff moves forward about a day per day as long as the 93% figure holds.

This page tracks the family-based category, the only I-485 category USCIS still publishes per field office. Employment-based I-485 gets one figure for all field offices combined: 80% within 9.5 months, 93% within 19 months. USCIS published a separate employment-based figure for Saint Louis, MO until Mar 3, 2025; that history is further down.

History

Saint Louis, MO: the 80% figure over time

Every point is a figure USCIS published. The gray line is the median across all field offices for the same category, so you can tell whether this office is moving with everyone else or on its own.

0510152025Months20232024202520261216

Every change USCIS published

Newest first. The date is the day a new figure first appeared in the archive of the USCIS site.

Date80% decided93% decided80% change
12 months25 months+1 mo
11 months26 months+1 mo
10 months18.5 months0
10 months17.5 months−0.5 mo
10.5 months17.5 months+0.5 mo
10 months16 months+1.5 mo
8.5 months14 months0
8.5 months14.5 months0
8.5 months13 months0
8.5 months12.5 months0
8.5 months13 months−1.5 mo
10 months17.5 months−1 mo
Show all 42 changes
Date80% decided93% decided80% change
11 months18.5 months−1 mo
12 months20 months−1.5 mo
13.5 months23.5 months−1.5 mo
15 months23.5 months0
15 months22.5 months+2.5 mo
12.5 months20 months+0.5 mo
12 months18 months+0.5 mo
11.5 months17.5 months0
11.5 months16.5 months−2 mo
13.5 months17 months−0.5 mo
14 months17 months−0.5 mo
14.5 months17 months−0.5 mo
15 months17.5 months+1 mo
14 months18.5 months−0.5 mo
14.5 months23.5 months0
14.5 months24 months0
14.5 months23.5 months+1.5 mo
13 months21 months+0.5 mo
12.5 months17 months+0.5 mo
12 months16 months0
12 months16.5 months+0.5 mo
11.5 months17 months−0.5 mo
12 months18 months−4 mo
16 months26.5 months+1.5 mo
14.5 months26.5 months−0.5 mo
15 months26.5 months+2 mo
13 months24.5 months−0.5 mo
13.5 months24 months+1 mo
12.5 months23 months0
12.5 months20 months—

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How the 80% figure moved

Compared withThen80% change
3 months ago (Jul 16, 2026)10 months+2 mo
6 months ago (Apr 16, 2026)8.5 months+3.5 mo
12 months ago (Oct 16, 2025)10 months+2 mo
24 months ago (Oct 16, 2024)11.5 months+0.5 mo

Employment-based I-485 at Saint Louis, MO (no longer published)

USCIS used to publish employment-based I-485 times per office too. After Mar 3, 2025 it posts only the combined figure. This is the office's history until then.

0102030Months20232024202523

Other field offices in Missouri

Fastest offices

Slowest offices

FAQ

Common questions

How long does an I-485 take at the Saint Louis, MO field office?

As of USCIS's Sep 17, 2026 update, 80% of family-based I-485 applications at Saint Louis, MO were decided within 12 months and 93% within 25 months. Both are measured on cases completed over the past six months.

When can I submit a case inquiry at Saint Louis, MO?

When your receipt date is before Sep 21, 2024 (as of Oct 16, 2026). Use USCIS's e-Request tool for cases outside normal processing time. The date moves forward roughly a day per day.

Is Saint Louis, MO faster or slower than other offices?

It ranks 8th of 90. The median field office is at 16 months; the fastest is Burlington, VT at 8.5 months and the slowest is Seattle, WA at 36 months.

Can I move my case to a faster office?

Not by choice. Your home address decides the field office. If you actually move, update your address with USCIS, and the case may be transferred to the office that serves the new address.

How often does USCIS update these numbers?

USCIS says monthly. Since May 2022 the 80% figure for Saint Louis, MO has changed 30 times.

Why does the history start in May 2022?

That's when USCIS switched its headline figure to the 80% measure. Before May 6, 2022 the smaller published number was the median, so earlier values aren't comparable.

USCIS processing times

What the two numbers mean

USCIS publishes two figures for each office. The headline one is how long it took to decide 80% of the cases completed over the last six months. The second is the 93% mark: once a case is older than that, USCIS treats it as outside normal processing time and lets you submit a case inquiry. The "receipt date for a case inquiry" USCIS shows is today minus that 93% figure.

Both describe cases USCIS already finished. They read recent throughput at that office. They're not a promise about your case.

Sources and method

Where these numbers come from

Every figure is USCIS's own, from its Case Processing Times tool. USCIS shows only today's number and overwrites it when it changes. It keeps no history.

The history comes from the open jzebedee/uscis project, which has saved a copy of USCIS's processing-time data every day since March 2022. We read that archive daily and string each office's and category's changes into one timeline.

On May 6, 2022 USCIS switched its headline number from the median to the 80% measure, so the 80% history starts that day.

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