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Lanark Postal Codes: K0A to K7H | Ontario

Postal Codes for Lanark range from K0A to K7H in Ontario, Canada. To find exact Postal Codes and postcodes within Lanark, choose from the districts below.

Postal Codes for Places in Lanark

Showing 11 places in Lanark. Last verified with official records on May 2, 2026.

Almonte
Balderson
Carleton Place
Clayton
Lanark
Maberly
McDonalds Corners
Pakenham
Perth
Rideau Ferry
Smiths Falls

Sample Address Format for Lanark

Sender
[Sender Name]
[Sender Street Address]
[City, ZIP]
[Country]
Recipient
[Recipient Name]
Street Address / PO Box
Lanark, Ontario, K0A
CANADA

Lanark on the Map

The map above highlights the geographic boundaries of the Lanark districts in Canada.

Lanark Quick Facts

CountryCanada (CA)
Administrative PathCanada β†’ Ontario
Postal CodeK0A~K7H
ProvinceOntario
ISO CodesCA / CAN / 124
Top-level domain (ccTLD).ca
Coordinates45.047011, -76.329888
Places11

What to Know About Lanark

Key Facts

Lanark is a county located in Eastern Ontario, Canada, situated approximately 60 kilometers southwest of Ottawa. This rural county forms part of the broader Ottawa Valley region and is bordered by the Ottawa River to the north. With a population of approximately 70,000 residents spread across its 3,000 square kilometers, Lanark County maintains a predominantly agricultural and forested landscape while serving as a commuter region for the national capital. The county is administratively divided into 8 municipalities, including the towns of Carleton Place, Perth, and Smiths Falls, along with several townships. Known for its maple syrup production, Lanark County hosts numerous sugar bushes and celebrates this heritage through annual maple festivals. The region's economy combines agriculture, forestry, tourism, and light manufacturing, with many residents commuting to Ottawa for employment. Visitors and residents alike can access comprehensive postal code information for all of Lanark County's municipalities and communities through our detailed regional database.

Neighboring Regions

  • Leeds and Grenville
  • Frontenac
  • Renfrew
  • Ottawa

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