Treaty of Bern Creates General Postal Union

Context

By the mid-nineteenth century, sending a letter abroad often required navigating dozens of separate bilateral agreements between countries. Each pact set its own rates, routes, and accounting rules, frequently forcing senders to affix multiple stamps for transit mail and leaving postal administrations to reconcile complicated revenue shares.

National experiments with reform offered a model for change. In Britain, Sir Rowland Hill’s 1840 introduction of uniform domestic postage prepaid by adhesive stamps proved that simplification could increase volume and efficiency. A decade later, U.S. Postmaster General Montgomery Blair convened a conference in Paris that drew fifteen nations and produced broad principles, yet the gathering stopped short of a binding international convention.

The remaining gap was filled by Heinrich von Stephan, a senior postal administrator in the North German Confederation. He drafted a detailed blueprint for a unified postal domain and persuaded the Swiss government to summon an international congress to consider it.

What Happened

On 15 September 1874 the International Postal Congress opened in Bern with delegates from twenty-two countries. Over the next three weeks the representatives negotiated under Swiss auspices, refining Stephan’s plan into a workable treaty text.

The decisive session took place on 9 October 1874 in the Swiss capital. The assembled plenipotentiaries signed the Treaty of Bern, which formally established the General Postal Union with its seat in Bern. The agreement declared the territories of member states a single postal area, fixed a uniform letter rate, guaranteed freedom of transit, and allowed each country to retain the postage it collected.

The Swiss authorities were entrusted with establishing a permanent International Bureau to coordinate the new union’s affairs and to serve as its secretariat.

Aftermath

The treaty entered into force on 1 July 1875. Its practical rules quickly proved popular; within three years several additional states had acceded, prompting the 1878 renaming of the organization as the Universal Postal Union to reflect its expanding membership.

The new union’s headquarters remained in Bern, and the International Bureau began publishing regular statistics and circulars that standardized procedures across borders.

Legacy

More than a century and a half later the Universal Postal Union continues to operate from Bern as the second-oldest international organization and a specialized agency of the United Nations since 1948. It still sets technical standards for the exchange of mail and parcels among its nearly two hundred member countries.

October 9 is observed worldwide as World Post Day in commemoration of the treaty’s signature. Historians view the Bern agreement as an early and durable example of functional multilateralism that removed barriers to communication without requiring political union among its members.