01604 area code: Northampton
01604 is the UK dialling code for Northampton, in West Northamptonshire, England. Numbers are 01604 followed by 6 digits.
- Area
- Northampton
- Where
- West Northamptonshire, England
- Written as
- 01604 xxxxxx
- Digits in a full number
- 11, including the 0
- Calling from abroad
- +44 1604 xxxxxx
- Phone companies holding ranges
- 89 (Ofcom allocation data). This doesn’t show which company a particular number is with, or who uses it.
Where 01604 is
Northampton is a town in West Northamptonshire, England.
Could it be someone you know?
A number showing 01604 might look familiar. Check the full number before trusting the caller. It can help to think whether you know someone in or around Northampton, Wellingborough or Daventry, have used a business there, booked or applied for something nearby, or are expecting a callback.
Codes near Northampton
Straight-line distance from Northampton.
Does 01604 tell me who called?
No. 01604 is assigned to Northampton, but that doesn’t prove who is calling or where they are. Caller ID can be faked, a number keeps its code when it moves provider, and 89 phone companies hold ranges of 01604 numbers. Search the full number to see what people have reported about it and which phone company its range was given to.
Caller says they’re your bank, HMRC, the police or a courier? Hang up and call a number you trust, from your card, a letter or their website, or dial 159 for most UK banks.
Reported 01604 numbers
Nobody has reported an 01604 number to us yet. If one has been calling you, report it so the next person sees it.
Codes, code lengths and provider counts from Ofcom’s numbering data, downloaded 23 September 2026. Places from Wikidata. All UK area codes · Who called me? · Stop spam calls