Northampton phone numbers start 01604
Northampton is in West Northamptonshire, and its landline numbers begin 01604.
An 01604 number does not prove the caller is in Northampton
89 phone companies hold 01604 ranges, a number keeps its code when it moves provider, and caller ID can be faked outright. The code tells you which exchange the range was allocated to - nothing about who dialled.
- Area code
- 01604
- Administrative area
- West Northamptonshire
- County
- Northamptonshire
- Nation
- England
- Population
- 245,899
- This town
- The place 01604 is named after
- Phone companies holding ranges
- 89
Numbers reported on 01604
Nobody has reported an 01604 number to this site yet. That does not mean an 01604 number is safe - it means no one has told us about one.
Other places on 01604
01604 covers more than Northampton. A call showing this code could have been allocated to a range at any of these exchanges.
Codes near Northampton
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Buy us a coffeeArea code and range data from Ofcom's published allocations, downloaded 1 October 2026. Town locations, populations and administrative areas from Wikidata (CC0), joined 1 October 2026 - towns within 40 km of the exchange. Reports are from visitors to this site and are unchecked. Browse every town A-Z.