Arrondissements of the Orne department
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The 3 arrondissements of the Orne department are:
- Arrondissement of Alençon, (prefecture of the Orne department: Alençon) with 133 communes. The population of the arrondissement was 101,492 in 1990, and was 101,487 in 1999, a decrease of 0.0%.
- Arrondissement of Argentan, (subprefecture: Argentan) with 216 communes. The population of the arrondissement was 120,743 in 1990, and was 119,446 in 1999, a decrease of 1.07%.
- Arrondissement of Mortagne-au-Perche, (subprefecture: Mortagne-au-Perche) with 146 communes. The population of the arrondissement was 70,969 in 1990, and was 71,404 in 1999, an increase of 0.61%.