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US State Coverage

Ontario

Browse all 19 active Area Codes serving the state of Ontario.

Home › Ontario

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Capital City

Capital

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6,130,784

Population

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1864

Statehood

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Active Codes

Geographic Coverage

All Ontario Area Codes

226 View Details 249 View Details 289 View Details 343 View Details 365 View Details 382 View Details 416 View Details 437 View Details 519 View Details 548 View Details 613 View Details 647 View Details 683 View Details 705 View Details 742 View Details 753 View Details 807 View Details 905 View Details 942 View Details

About Ontario

Ontario is served by 19 unique area codes. Major metropolitan areas like Capital City typically have multiple overlays to support high demand.

Telecommunications Context

The telecommunications history of Ontario is a fascinating journey of growth and innovation. As one of the key regions in the national numbering plan, this area has seen numerous shifts from early manual exchanges to today's high-speed digital networks. Served by multiple area codes, Ontario continues to lead in connectivity, supporting both urban hubs and rural communities. Each area code within the state represents a unique geographic and economic sector, contributing to the overall connectivity of the nation.