United States · USA
Waterloo, IA (+4) dialing code
Waterloo, IA (+4) · Waterloo, IA (+4)
Dialing code
+1 319
From abroad
+1 319 123-4567
Dial +1, then the city code 319, then the phone number without the leading zero.
Within the country
1319 123-4567
Dial 1319 followed by the phone number.
How to call Waterloo, IA (+4)?
To call Waterloo, IA (+4) in United States from abroad, dial the international code +1, followed by the city code 319, then the local number without the leading zero.