United States phone directory
Curated useful numbers for United States and how to dial +1 from abroad. Verify on official sources before calling.
How to dial
Use the full international format: +1 plus the national number. Drop a leading 0 from national numbers when you dial internationally. Always confirm numbers and hours on the institution's official website.
Full +1 dialing guide →Useful numbers in United States
Banking & payments
Citi (Citibank)
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Citibank international line
+1 210 677 0065
Government & public services
CBP (US Customs and Border Protection)
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CBP Information Center for callers outside the U.S.
+1 202 325 8000
Federal Student Aid (FAFSA)
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FSA International
+1 800 433 3243
US Passport Office (State Department)
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State Department Overseas Citizens
+1 202 647 4000
USCIS
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USCIS Contact Center from outside the US
+1 212 620 3418
VA (Department of Veterans Affairs)
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VA International Assistance
+1 800 827 1000
Health & social
Healthcare.gov (ACA Marketplace)
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Healthcare Marketplace International
+1 800 318 2596
Medicaid
No verified public line listed here, open the institution page for official numbers and hours.
Medicare
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1-800-MEDICARE in internationalized format
+1 800 633 4227
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Medicare TTY line in internationalized format
+1 877 486 2048
Numbers and hours change, and some listings may be incomplete or outdated. This page is informational only, verify every number on the official website before calling. Spot an error or have a better number? Message us to help improve WorldDial.