Largest city in the Ariège department: the 2026 ranking

The 325 towns of the Ariège department (09) ranked by population, area and density, based on the official INSEE population figures in force in 2026.

The largest city in the Ariège department is Pamiers, with 17,005 inhabitants (ranked 586th in France by population). The largest town by area is Auzat (163 km²). The most densely populated is Saint-Jean-du-Falga, with 722 inhabitants per km². At the other end of the ranking, Lercoul has only 11 inhabitants.

The Ariège department has 159,684 inhabitants over 4,890 km², a density of 33 inhabitants per km², 3.4 times lower than the national average (110 per km²). It accounts for 2.6% of the population of Occitanie, the region it has belonged to since the 2016 reform (formerly Midi-Pyrénées): see the ranking of the largest cities in Occitanie.

The 20 largest cities in the Ariège department by population

# Town Population km² per km² France rank
1 Pamiers 17,005 46 371 586th
2 Foix 10,256 19 531 1,033rd
3 Saint-Girons 6,398 19 334 1,756th
4 Lavelanet 6,095 13 485 1,849th
5 Saverdun 4,956 61 81 2,302nd
6 Mazères 3,933 44 89 2,939th
7 Varilhes 3,549 12 302 3,261st
8 La Tour-du-Crieu 3,348 10 326 3,438th
9 Mirepoix 3,331 47 70 3,459th
10 Tarascon-sur-Ariège 3,119 8.7 361 3,708th
11 Saint-Jean-du-Falga 2,908 4.0 722 3,951st
12 Laroque-d'Olmes 2,481 14 173 4,547th
13 Verniolle 2,444 11 217 4,619th
14 Lézat-sur-Lèze 2,357 40 59 4,777th
15 Montgailhard 1,472 7.9 186 7,301st
16 Saint-Lizier 1,426 9.0 158 7,495th
17 Lorp-Sentaraille 1,404 6.2 228 7,589th
18 Saint-Paul-de-Jarrat 1,374 23 61 7,731st
19 Ax-les-Thermes 1,359 30 45 7,807th
20 Saint-Jean-de-Verges 1,306 13 103 8,102nd

Largest towns by area in the Ariège department

# Town Population km² per km² France rank
1 Auzat 567 163 3 73rd
2 Aston 201 154 1 85th
3 Ustou 287 98 3 238th
4 Seix 772 87 9 331st
5 Mérens-les-Vals 169 80 2 410th
6 Orlu 160 71 2 525th
7 Saverdun 4,956 61 81 740th
8 Sentein 176 59 3 794th
9 Couflens 101 56 2 895th
10 Bordes-Uchentein 225 54 4 945th

Most densely populated towns in the Ariège department

# Town Population km² per km² France rank
1 Saint-Jean-du-Falga 2,908 4.0 722 1,304th
2 Foix 10,256 19 531 1,752nd
3 Lavelanet 6,095 13 485 1,917th
4 Les Cabannes 326 0.9 375 2,406th
5 Pamiers 17,005 46 371 2,431st
6 Tarascon-sur-Ariège 3,119 8.7 361 2,494th
7 Saint-Girons 6,398 19 334 2,687th
8 La Tour-du-Crieu 3,348 10 326 2,765th
9 Varilhes 3,549 12 302 2,987th
10 Saint-Pierre-de-Rivière 697 2.4 297 3,052nd

All towns in the Ariège department (325)

INSEE total population in parentheses. Each town page gives its area, density, national and departmental rankings, and neighboring towns.

Other departments in Occitanie

Aude (11) Aveyron (12) Gard (30) Haute-Garonne (31) Gers (32) Hérault (34) Lot (46) Lozère (48) Hautes-Pyrénées (65) Pyrénées-Orientales (66) Tarn (81) Tarn-et-Garonne (82) All departments

Sources: INSEE, official population figures in force on January 1, 2026 (total population); land area: IGN / Observatoire des territoires. Rankings computed across the 34,858 communes in the database.

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