Sarnia Postal Codes
Below are the public Forward Sortation Areas (FSAs) for Sarnia. or enter an address in the search bar below to find its regional prefix.
Find Forward Sortation Area (FSA) by Address
Due to open-data restrictions, complete 6-character codes are limited. Enter a Canadian address below to find its regional Forward Sortation Area (FSA) prefix.
Demographics & Economic Profile
Forward Sortation Areas (FSAs) in Sarnia
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View AllFrequently Asked Questions
What is the postal code for Sarnia, Ontario? ▾
Sarnia is covered by 19 Forward Sortation Area (FSA) prefixes, including: N7B, N7C, N7E, N7G, N7H. To find your exact 6-character postal code, you will need your specific street address.
How do Canadian postal codes work in Sarnia? ▾
Like all Canadian postal codes, codes in Sarnia are formatted as A1A 1A1. The first three characters represent the Forward Sortation Area (FSA), which identifies a specific region or neighborhood in Sarnia. The last three characters represent the Local Delivery Unit (LDU), which identifies the exact street or building.
What is the population of Sarnia? ▾
According to Statistics Canada, Sarnia has an estimated population of 46,780 residents.