About Postcode 21005
This postal code is assigned to Harford Municipality , Maryland, United States. This location-level postal code helps ensure accurate mail delivery and location identification.
Postal Code Format
United States uses numeric zip codes with 5 digits (example: 99553). In our directory, these codes are organized from states down to counties.
- 21 — State (Maryland)
- 5 — Municipality (Harford)
How to Use This Postcode 21005
When sending mail or packages to this area, use the postal code below to ensure accurate and timely delivery.
Address format example:
Recipient Name
House #, Street Name
Harford
Maryland
21005
United States
Domestic Mail
Include this postcode on all letters and packages sent within United States.
International Mail
For international deliveries, include "United States" on the last address line after the postcode.
Frequently Asked Questions
What area does this postcode cover?
This postcode covers Maryland → Harford in United States.
Is this a valid List Post Code?
Yes. 21005 is an active postcode for Maryland → Harford in United States. It follows the 5-character format used in this country.
How do I find the postal code for a specific address?
Search by state, county, and municipality to find the correct postcode in United States. Search Postcodes
Found incorrect info for 21005?
Useful Resources
Developer API
Get this data via API
Free JSON for postcode 21005.
https://api.listpostcode.com/v1/countries/US/postcodes/21005curl -H "x-api-key: YOUR_API_KEY" \
"https://api.listpostcode.com/v1/countries/US/postcodes/21005"Requests need a free API key.