USCIS Casper Field Office

The USCIS Casper Field Office is at 150 East B Street, Room 1014, Casper, WY 82601. It belongs to USCIS’s Kansas City district. In USCIS’s official field-office-by-ZIP file (dated August 28, 2026), the counties with the most of its ZIP codes are Natrona (WY), Fremont (WY) and Big Horn (WY). Below: every county it serves, where to check this office’s USCIS processing times, and the asylum office for its area. Versión en español

General information, not legal advice. For your specific case, talk to an immigration attorney or an accredited representative.

Office facts from USCIS
  • Address: 150 East B Street, Room 1014, Casper, WY 82601
  • USCIS district: Kansas City
  • ZIP codes assigned: 106 (in WY)
  • Counties with at least one assigned ZIP: 15

Source: USCIS's official field-office-by-ZIP file dated August 28, 2026 (uscis.gov), checked October 3, 2026. USCIS says the address that counts for your visit is the one on your interview or appointment notice.

USCIS processing times at this office

Our data, read from USCIS's processing-times tool on October 3, 2026, has no figure for this office. You can check it directly in the USCIS tool.

Area the Casper office serves

USCIS assigns every ZIP code to one field office. These are the counties where at least one ZIP code goes to the Casper office, with how many of that county's ZIP codes it gets. A county can be split between offices: your ZIP code is what counts, and USCIS says it may move some application work to other field offices, so follow the office named on your notice.

Natrona (WY, 14); Fremont (WY, 13); Big Horn (WY, 12); Sheridan (WY, 12); Teton (WY, 8); Campbell (WY, 7); Crook (WY, 7); Park (WY, 7); Sublette (WY, 6); Converse (WY, 4); Johnson (WY, 4); Niobrara (WY, 4); Weston (WY, 4); Hot Springs (WY, 2); Washakie (WY, 2).

Asylum office for this area

USCIS assigns affirmative asylum cases to an asylum office, also by ZIP code. Go to the location on your interview notice. For the ZIP codes of the Casper office, USCIS's file lists:

  • Houston Asylum Office (16855 Northchase Drive, Second Floor, Houston, TX 77060) — 106 ZIP codes

Other offices in the Kansas City district

  • Denver — 12484 East Weaver Place, Centennial, CO 80111
  • Wichita — 550 West Douglas Avenue, Wichita, KS 67203
  • Saint Paul — 250 Marquette Avenue, Suite 710, Minneapolis, MN 55401
  • Kansas City — 10320 NW Prairie View Road, Kansas City, MO 64153 (district headquarters)
  • Omaha — 1717 Avenue H E, Omaha, NE 68110
  • Las Vegas — 5650 West Badura Avenue, Suite 100, Las Vegas, NV 89118
  • Reno — 790 Sandhill Road, Reno, NV 89521
  • Salt Lake City — 660 South 200 East, Suite 400, Salt Lake City, UT 84111

Before you go: what USCIS says

  • Appointment only. USCIS states that its field offices do not allow walk-ins and that you must have an appointment to visit an office. Your interview or appointment notice gives the address that counts for your visit.
  • What a field office does. Per USCIS: interviews for all non-asylum cases (for example, getting a Green Card), naturalization ceremonies, and appointments for information and applicant services that supplement its website and phone help.
  • Closures. USCIS says offices may close because of inclement weather or unexpected events and encourages checking its Office Closings page before traveling.
  • Lawyers in person. Effective May 18, 2026, USCIS no longer permits attorneys and accredited representatives to participate remotely in field office interviews, except in limited circumstances.
  • Payments. USCIS says it does not allow people to come to a field office to make a payment; for the forms it accepts payment on at field offices, payment is mailed with Form G-1450 (card) or G-1650 (bank account); if you qualify for a paper fee payment exemption, USCIS says you may pay by check by filing Form G-1651. The exception it names is emergency advance parole (Form I-131, EAP): call the Contact Center for an appointment.
  • Fingerprints (biometrics). Taken at an Application Support Center (ASC) when USCIS schedules them. USCIS sends the appointment notice by mail or to your online account; wait for it before visiting.

How to request or change an appointment

  1. Field office appointment: USCIS offers an online appointment request from its field offices page, or call the USCIS Contact Center at 800-375-5283 (TTY 800-767-1833).
  2. Reschedule biometrics: USCIS’s biometrics page says the request must be made through your USCIS online account (not by mail), at least 12 hours before the appointment, and must establish good cause. It says to call the USCIS Contact Center at 800-375-5283 (TTY 800-767-1833) if the request is less than 12 hours from the appointment time, if you missed the appointment, or if you have problems making the request in your online account. If you do not request it before the appointment or do not establish good cause, USCIS says it may consider your case abandoned and may deny it.
  3. If you moved: update your address with USCIS — see change of address. Your field office depends on your ZIP code.

Official sources

Last verified: 2026-10-03. General procedural information for educational purposes. Office data comes from official USCIS files and can change. Verify directly with USCIS and on your appointment notice. Not legal advice.