Prefix Information
The prefix 604 is part of area code 414 serving Milwaukee, Wisconsin.
This exchange contains 10,000 possible phone numbers (414-604-0000 through 414-604-9999).
Phone numbers with prefix 604 in area code 414. Location: Milwaukee, Wisconsin.
The prefix 604 is part of area code 414 serving Milwaukee, Wisconsin.
This exchange contains 10,000 possible phone numbers (414-604-0000 through 414-604-9999).