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Ain

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Ain is a French department in the eastern part of the country, in the Auvergne-Rhône-Alpes region. It is named after the Ain river and borders the Saône and Rhône rivers as well as Switzerland (Geneva and Vaud). The department number is 01, and its capital is Bourg-en-Bresse. Ain covers about 5,762 square kilometers and has a population of around 679,000 people (2023).

Ain has four characteristic areas: Bresse (flat farmland important for cereals, cattle, milk and poultry), Dombes (the land of more than a thousand ponds and fish farming), Bugey (mountains), and Pays de Gex (near Lake Geneva). The western border runs along the Saône, while the Rhône forms the eastern and southern edges. The Crêt de la Neige in the Jura mountains is the highest point in the department at 1,720 meters.

The economy is diverse and strongly industrial for its size. A major plastics sector runs around Oyonnax (often called Plastics Valley), along with metal processing, electronics and the automotive industry. Agriculture remains important, especially the famous Bresse poultry, Bleu de Gex cheese, Bugey wines and Dombes fish. The Bugey nuclear plant also plays a significant role in the local economy. Ain has a well-developed transport network, with major roads, rail links (including high-speed Paris–Geneva and Paris–Lyon routes) and nearby airports in Lyon and Geneva. The Saône and Rhône rivers support river traffic, and Jassans-Riottier on the Saône hosts an important harbor.

People in Ain have grown rapidly since 1990, with a population density of about 110–120 inhabitants per square kilometer. Bourg-en-Bresse is the main city, and several towns have more than 10,000 residents. The department is known for its welcoming towns, historic sites and scenic contrasts between plains, ponds and mountains.

Historically, Ain has a long past. Humans lived here as far back as 15,000 years. It passed through Gaulic, Roman and Savoyard rule before becoming a French department during the Revolution in 1790. Today Ain blends industry, farming and tourism, with many cultural and natural sights to explore.


This page was last edited on 3 February 2026, at 01:35 (CET).