Gers is bordered by the departments of Hautes-Pyrénées and Pyrénées-Atlantiques to the south, Haute-Garonne and Tarn-et-Garonne to the east, Lot-et-Garonne to the north and Landes to the west.

[5] The culture is largely agricultural, with great emphasis on the local gastronomical specialties such as: Also, some prominent cultivated crops are corn, colza, sunflowers and grain.

The department is characterised by sleepy bastide villages and rolling hills with the Pyrenees visible to the south.

A horse race at the Auteuil Hippodrome has been named after André Boingnères, a notable local race-horse owner and the successful Mayor of Termes-d'Armagnac between 1951 and 1976.

Auch is, together with Toulouse, Nîmes, Carpentras, Ajaccio, Marseille, Toulon and Perpignan, one of the hottest cities in France.