https://www.visacoach.com/uscisk1vi... processing by USCIS is the first hurdle for a K1 Fiance Visa application to overcome. As of September 2022 here is how long the various USCIS service centers are taking to approve an I129f K1 Fiance Visa application before forwarding it to the US State Department for the next and last hurdle.

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o apply for your Fiance Visa, you first submit it to USCIS. USCIS processes the application
and when they are done, USCIS forwards your case to the State Department for further processing
and final interview at a US embassy or consulate in your partners home country.

The initial and currently slowest stage your case needs to pass through is processing and review
by USCIS. USCIS stands for United States Citizenship and Immigration Service.

To submit your application you mail it to USCIS's Dallas lockbox.

ALL cases are mailed to the same place, regardless of where you live, or which Service Center you would
like to work on your case..

In Dallas mailroom clerks, sort all applications and decides where each should go. They are assigned to
one of 5 possible processing centers scattered around the USA.

The theory behind this is that the sorting clerks can "balance the load" between centers.

Sorry, you can't choose your preferred destination. It is completely up to the clerks at Dallas.

Here are the expected timing for these five processing centers.

For each center I will provide you with two time estimates The first is how long it takes
for that center to complete processing on 80 percent of the cases it is assigned,

and the second is the earliest date USCIS allows you to contact them to chase the
progress of your case If it is still pending months after the majority have been complated..


At the California Service Center,

I129f, 80% of k1 fiance cases are taking 13.5 months
Earliest time allowed to chase is 15 months after submission

At the Nebraska Service Center

80% are at 4.5 months
earliest complaint at 6 months

At the Potomac Service Center
4.5 months
and
7 months

At the Texas Service Center
13 months
and
15 months

At the Vermont Service Center
5.5 months
and 7 months