Harrow is located in Harrow, Greater London, United Kingdom, with 5231 postal codes indexed. This page provides a complete postal code list and a mock phone number generator based on local dialing rules.
Postal Codes Directory
The following postal codes are indexed for this geographical region.
Random Local Phone Numbers
Mock phone numbers matching local formatting and dialing area codes. (20) — Greater London
Frequently Asked Questions
How many postal codes are indexed in this area (Harrow)?
There are currently 5231 unique postal codes indexed for this city. The registered list includes: HA7 4RQ, HA7 4RR, HA7 4RS, HA7 4RT, HA7 4RU, HA7 4RX, HA7 4RY, HA7 4RZ, HA7 4SA, HA7 4SB, HA7 4SD, HA7 4SE, HA7 4SF, HA7 4SG, HA7 4SH, HA7 4SJ, HA7 4SL, HA7 4SN, HA7 4SP, HA7 4SQ, HA7 4SR, HA7 4SW, HA7 4SY, HA7 4TA, HA7 4TB, HA7 4TD, HA7 4TE, HA7 4TF, HA7 4TG, HA7 4TH, HA7 4TJ, HA7 4TL, HA7 4TN, HA7 4TP, HA7 4TQ, HA7 4TR, HA7 4TS, HA7 4TT, HA7 4TU, HA7 4TW, HA7 4TX, HA7 4TY, HA7 4TZ, HA7 4UA, HA7 4UB, HA7 4UD, HA7 4UE, HA7 4UF, HA7 4UG, HA7 4UH, HA7 4UL, HA7 4UQ, HA7 4US, HA7 4UY, HA7 4UZ, HA7 4WH, HA7 4WL, HA7 4WN, HA7 4WP, HA7 4WQ, HA7 4WS, HA7 4WT, HA7 4WU, HA7 4WY, HA7 4XA, HA7 4XD, HA7 4XR, HA7 4XS, HA7 4YF, HA7 4YN, HA7 4YP, HA7 4YW, HA7 4ZB, HA7 4ZE, HA7 4ZN, HA7 4ZR, HA7 9AF, HA7 9BE, HA7 9DP, HA7 9DT, HA7 9ER, HA7 9EY, HA7 9FA, HA7 9FB, HA7 9FD, HA7 9FE, HA7 9FF, HA7 9FG, HA7 9FH, HA7 9FQ, HA7 3WB, HA7 3YR, HA7 4AA, HA7 4AB, HA7 4AF, HA7 4AH, HA7 4AL, HA7 4AP, HA7 4AQ, HA7 4AR.
What is the phone number format and dialing rules for this area (Harrow)?
Local phone numbers follow the dialing prefix rules. Numbers generated locally are 11 digits long and utilize regional area codes: 20.
Local Dialing: Within the same area, dial the standard subscriber number directly without country prefix.
International Dialing: To dial internationally, prepend the country dial code followed by the local area code and number.
Local Dialing: Within the same area, dial the standard subscriber number directly without country prefix.
International Dialing: To dial internationally, prepend the country dial code followed by the local area code and number.
What can the simulated phone numbers generated here be used for?
They are simulated data designed specifically for software development testing, QA automation workflows, form input validation (e.g., formatting mobile/landline numbers), and international compliance mock databases. Simulated phones cannot make or receive calls, nor can they receive SMS verification codes, and they cannot be used to dial real numbers.
How to verify the accuracy of the postal code data for this area (Harrow)?
You can double-check accuracy via the official query portals provided by the official postal reference sources below (such as China Post or US USPS). Our website data is periodically synchronized with these officially published directories to ensure the accuracy and timeliness of the basic codes and regional mapping data.
Data Verification & Reference Sources
The following official postal authorities can be used to verify the accuracy of the postal code data on this page: