Dialling code
01604
Area / city
Northampton
Covers
Northampton and the surrounding area
County
Northamptonshire
Region / nation
East Midlands, England
Number type
Geographic landline (01/02)
Local format
01604 XXXXXX
From abroad
+44 1604 XXXXXX

Where is the 01604 area code?

The 01604 dialling code is the UK geographic area code for Northampton, covering Northampton and the surrounding area. Northampton lies in Northamptonshire, in the East Midlands region of England. Northampton is a large county town with a long history in the boot and shoe trade.

Because 01604 is a geographic (01/02) code, a number using it is tied to the Northampton area — though with modern hosted telephony (VoIP) a business can keep an 01604 number even after moving premises, so the code reflects the original area rather than a guaranteed physical location today.

Northampton phone number format & example

An Northampton number is made up of a 5-digit area code followed by a 5 or 6-digit local number. Written in full it looks like 01604 XXXXXX (the Xs stand for the local digits). Ofcom has not reserved a dedicated fictitious range for 01604. For on-screen examples it recommends the unused 01632 96000001632 960999 range. Real Northampton numbers follow the pattern 01604 XXXXXX.

How to dial a Northampton (01604) number

  • Within the Northampton area: on most lines you can dial just the local part of the number, although dialling the full national number including 01604 always works.
  • From elsewhere in the UK: dial the full number including the area code — 01604 XXXXXX.
  • From abroad: replace the leading 0 with +44+44 1604 XXXXXX.

Call charges for 01604 numbers

Calls to 01604 geographic numbers are charged at your phone provider’s standard UK landline rate and are normally included in any inclusive call minutes on your landline or mobile plan. UK-wide 03 numbers are guaranteed by Ofcom to cost the same as 01/02 calls, while 084, 087 and 09 numbers cost considerably more — so it’s always worth checking the prefix before you dial.

Spotting spoofed 01604 scam calls

Fraudsters frequently spoof local dialling codes, faking the caller ID so a scam call appears to come from a nearby Northampton (01604) number you might trust. This is called neighbour spoofing. Remember:

  • A familiar 01604 area code is not proof the caller is local or genuine — caller ID can be faked.
  • Banks, HMRC and the police will never ask you to move money or share passwords or one-time codes over the phone.
  • If a call feels off, hang up, wait a moment, and call the organisation back on a number from their official website or your statement.
  • Report nuisance calls to the ICO and forward scam texts to 7726 (free).

Nearby & related area codes

Explore the dialling codes of places near Northampton:

Browse all UK area-code guides ›