USCIS

Case status and case processing times

USCIS returns case processing times showing when 80% of cases were completed and published receipt-date cutoffs, plus current case status and available case details.

Check case status

Check the current USCIS case status from a receipt number. Returns the status, full explanation, form type if stated, and the date of the action when stated in the explanation.

Your information

Receipt Number

USCIS receipt number from your notice, such as IOE0903589664. Spaces, dashes and lowercase letters are accepted.

1 credit per run

Example results

Form Type: N-400
Page Link: egov.uscis.gov
Explanation: On October 31, 2018, we sent a request for initial evidence for your Form N-400, Application for Naturalization, Receipt Number IOE0903589664. The request for evidence explains what we need from you. We will not take action on your case until we receive the evidence or the deadline to submit it expires. Please follow the instructions in the request for evidence. If you do not receive your request for evidence by November 15, 2018, please go to www.uscis.gov/e-request to request a copy of the notice. If you move, go to www.uscis.gov/addresschange to give us your new mailing address.
Status Title: Request for Initial Evidence Was Sent
Receipt Number: IOE0903589664
Last Action Date: 2018-10-31

Example data · Run in Studio for fresh results.

About USCIS

Get processing times returns completion times and inquiry date cutoffs for a form, optionally filtered by category or office.

Check case status returns a case’s current status and explanation from a USCIS receipt number.

Built by Fous from uscis.gov and checked automatically; it last passed a check on Sep 29, 2026. Fous is not affiliated with USCIS.

Actions

Check case status

1 credit per run

Check the current USCIS case status from a receipt number. Returns the status, full explanation, form type if stated, and the date of the action when stated in the explanation.

What you provide

Field	Type	Required	Description
Receipt Number`receipt_number`	Text	Required	USCIS receipt number from your notice, such as IOE0903589664. Spaces, dashes and lowercase letters are accepted.Example: ioe 0903-589664

What you get

Field	Type	Description
Form Type`form_type`	Text	Form code, such as N-400, when mentioned in the explanation.Example: N-400
Page Link`page_link`	Text	USCIS Case Status Online page.Example: https://egov.uscis.gov/
Explanation`explanation`	Text	Full plain-language status explanation from USCIS.
Status Title`status_title`	Text	Current case status title.Example: Request for Initial Evidence Was Sent
Receipt Number`receipt_number`	Text	Normalized USCIS receipt number.Example: IOE0903589664
Last Action Date`last_action_date`	Date	Date of the status action from the explanation, if stated.Example: 2018-10-31

Example result

For Receipt Number: ioe 0903-589664

JSON

{
  "form_type": "N-400",
  "page_link": "https://egov.uscis.gov/",
  "explanation": "On October 31, 2018, we sent a request for initial evidence for your Form N-400, Application for Naturalization, Receipt Number IOE0903589664. The request for evidence explains what we need from you. …",
  "status_title": "Request for Initial Evidence Was Sent",
  "receipt_number": "IOE0903589664",
  "last_action_date": "2018-10-31"
}

Get processing times

1 credit per run

Find USCIS case processing times for a form, optionally by category and office. Times show when 80% of cases were completed; inquiry dates are the published receipt-date cutoffs. Some service centers are grouped as Service Center Operations.

What you provide

Field	Type	Required	Description
Form`form`	Text	Required	Form number or what the form is for, e.g. I-485 green card through family.Example: N-400 citizenship
Office`office`	Text	Optional	Field office or service center, e.g. Dallas TX or Texas Service Center. Leave blank for all offices.Example: Dallas TX
Category`category`	Text	Optional	Form category in words, e.g. family-based adjustment applications. Leave blank for all categories.Example: Based on a pending I-485 adjustment application

What you get

Field	Type	Description
Processing Times`processing_times`	List
Form`processing_times[].form`	Text	Example: N-400
Time`processing_times[].time`	Text	Example: 13 months
Months`processing_times[].months`	Number	Example: 13
Office`processing_times[].office`	Text	Example: Dallas TX
Category`processing_times[].category`	Text	Example: Application for Naturalization
Page Link`processing_times[].page_link`	Text	Example: https://egov.uscis.gov/processing-times
Case Inquiry Date`processing_times[].case_inquiry_date`	Text	Example: 2025-05-28
Last Updated Date`processing_times[].last_updated_date`	Text	Example: 2026-09-17

Example result

For Form: N-400 citizenship, Office: Dallas TX

JSON

{
  "processing_times": [
    {
      "form": "N-400",
      "time": "13 months",
      "months": 13,
      "office": "Dallas TX",
      "category": "Application for Naturalization",
      "page_link": "https://egov.uscis.gov/processing-times",
      "case_inquiry_date": "2025-05-28",
      "last_updated_date": "2026-09-17"
    }
  ]
}

For developers

Run this workflow from your own code. In Studio, turn on Developer mode and create an API key.

cURL

# First set your key: export FOUS_API_KEY='YOUR_FOUS_API_KEY'
: "${FOUS_API_KEY:?Set FOUS_API_KEY before running this example}"

curl 'https://api.fous.com/v1/query' \
  --fail-with-body --silent --show-error --max-time 120 \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "api": "@uscis",
  "visibility": "public",
  "operation": "check_case_status",
  "version": 1,
  "input": {
    "receipt_number": "ioe 0903-589664"
  },
  "response": {
    "format": "json"
  }
}'

What you can do with it

Compare processing times across offices.
Find the inquiry date cutoff for a form.
Check a case’s current status using its receipt number.
Identify the form type mentioned in a case explanation.

Questions

Is Fous affiliated with USCIS?

No. Fous is not affiliated with USCIS. This workflow reads the public uscis.gov website and returns its data.

How much does it cost?

Each run costs 1 credit. With pay-as-you-go, a credit costs 1¢; monthly plans cost less per credit.

Do I need a USCIS account?

No. You only need a Fous account.

How current is the data?

Fous gets the data from uscis.gov when you run it; repeating the same request within a day may return the saved result. Fous checks this workflow automatically; it last passed a check on Sep 29, 2026.