The N21 postcode district is a postal district with a population of 23,500 and is within the N London - N postcode area.
The area of the N21 postcode district is 2.30 square miles which is 5.95 square kilometres or 1,469.56 acres.
There are 3 postcode sectors within the N21 district.
|Postcode Sector||Delivery Office|
|N21 1||Winchmore Hill Sdelivery Office|
|N21 2||Winchmore Hill Sdelivery Office|
|N21 3||Winchmore Hill Sdelivery Office|