From 1944 to Leamington: The Story of Mexico's Diplomatic Presence in Canada

Mexico's diplomatic footprint in Canada is small and specific: one embassy and five consulates, in six cities that map almost exactly onto where Mexican Canadians actually live and work. Understanding why those six cities were chosen — and when — says as much about the history of the Mexican community in Canada as any population statistic.

Where Mexico is represented today

According to Wikipedia's "List of diplomatic missions of Mexico" and the "Mexico–Canada relations" article, Mexico's current network in Canada is:

The first five are unsurprising — they're Canada's federal capital and its four largest metropolitan areas, more or less the default map any country would draw for its consular network in Canada. Leamington is the outlier, and a genuinely telling one. It is a farm town in Essex County, nowhere near Canada's population centres, and its inclusion on this list exists for one reason: the concentration of Mexican seasonal agricultural workers in the greenhouse belt around Leamington and Kingsville, covered in more detail elsewhere in this series, is large and administratively significant enough that Mexico maintains a standing consular office there rather than serving the region occasionally from Toronto.

How the relationship got here: a timeline

Canada and Mexico established formal diplomatic relations in 1944, during the Second World War, when both countries were Allied nations, according to the "Mexico–Canada relations" Wikipedia article. That same source traces the earliest institutional roots of Mexico's consular presence to 1952, when Mexico opened its first consulate-general in Canada, in Montreal — eight years after formal relations began, and decades before Toronto or Vancouver's offices, reflecting Montreal's status at the time as Canada's largest and most internationally connected city.

The relationship moved at a stately pace through the mid-20th century: a 1956 meeting between Mexican President Adolfo Ruiz Cortines, U.S. President Dwight Eisenhower, and Canadian Prime Minister Louis St. Laurent in White Sulphur Springs, West Virginia; a 1959 official visit to Canada by Mexican President Adolfo López Mateos; a reciprocal 1960 visit by Prime Minister John Diefenbaker to Mexico; and, in 1968, the establishment of a joint ministerial commission meeting on a biennial basis. In 1974 the two countries signed the bilateral agreement permitting temporary Mexican migrant farm workers into Canada — the legal foundation of the Seasonal Agricultural Worker Program covered elsewhere in this series, and arguably the single agreement that did the most to shape where ordinary Mexicans in Canada actually live and work over the following half-century.

The relationship's modern chapter is dominated by trade. Negotiations for the North American Free Trade Agreement began in 1990, and NAFTA came into effect on January 1, 1994, deepening economic ties well beyond the scope of the original 1944 recognition. Relations were described as particularly close during the 2000s, when Mexican President Felipe Calderón and Canadian Prime Minister Stephen Harper held broadly aligned positions, per the same source. More recently: in December 2016, Canada lifted its visa requirement for Mexican citizens; in November 2018, Mexico, Canada, and the United States signed the USMCA (the NAFTA successor) at the G20 summit in Buenos Aires; in February 2024, Canada reimposed visitor visa requirements on Mexican nationals, citing a rise in asylum claims and irregular border crossings; and in June 2025, Mexican President Claudia Sheinbaum attended the G7 summit hosted by Canada in Kananaskis, Alberta.

The scale of the relationship today

Two-way trade between Canada and Mexico reached US$28.7 billion in 2023, according to the "Mexico–Canada relations" Wikipedia article. Canada's exports to Mexico lean toward agricultural inputs and industrial goods — seeds, aluminum alloys, wheat, vehicles and vehicle parts, diesel fuel, and aircraft assembly components. Mexico's exports to Canada run the other way along the North American auto and electronics supply chain: passenger and transport vehicles, flat-screen televisions, aircraft assembly goods, piston engine parts, tractors, electronics — and avocados, the one clearly food-related item on either country's top-export list. On the investment side, Canadian companies had invested US$33 billion in Mexico as of 2022, making Mexico Canada's 10th-largest direct investment destination; a separate article in this series covers the reverse flow — Mexican capital and companies operating inside Canada.

What the network actually does

Consular offices are not embassies in miniature; their core work is direct service to Mexican nationals — passport and identity-document renewal, civil registry services (births, marriages recorded abroad), notarized powers of attorney, and emergency assistance, including for workers detained, injured, or in wage disputes. For a population that includes tens of thousands of seasonal agricultural workers on closed work permits, many with limited English or French and working in isolated rural locations, physical proximity to a consulate is not a convenience — it is often the only accessible point of contact with the Mexican state. That practical logic, more than diplomatic symbolism, is the best explanation for why Leamington, and not a larger city, holds one of Mexico's six consular posts in Canada.

We were unable to access Mexico's own consular websites (embamex.sre.gob.mx and consulmex.sre.gob.mx) directly during this research session — both returned bot-verification or redirect pages that blocked automated access — so the specific services, hours, and jurisdiction boundaries of each office should be confirmed directly with the consulate in question before publishing service-oriented guidance to readers.

Reading the map as a history of settlement, not just diplomacy

Laid over the population figures in this series' census article, the consular map essentially traces where Mexican Canadians actually settled, in order of when the community grew large enough to justify a dedicated office. Montreal's 1952 consulate-general predates any of the population figures this series can source by nearly seventy years, so its opening reflected Montreal's general international standing at the time more than an already-large Mexican community there specifically. Toronto and Vancouver's consulates-general track those cities' status as Canada's largest and third-largest metro areas respectively — unsurprising, high-population placements. Calgary's consulate reflects Alberta's 25,450 residents of Mexican ancestry as of the 2021 Census, the fourth-largest provincial total in the country. Leamington is the exception that proves the rule: no other consular post in Mexico's Canadian network exists because of a single industry and a specific labour-migration program rather than general population settlement, which is exactly why this series treats it as a distinct story in its own right rather than folding it into the greenhouse-belt article alone.