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Largest city in the Gers department: the 2026 ranking

The 458 towns of the Gers department (32) ranked by population, area and density, based on the official INSEE population figures in force in 2026.

The largest city in the Gers department is Auch, with 23,451 inhabitants (ranked 394th in France by population). The largest town by area is Condom (97 km²). Auch is also the most densely populated town, with 324 inhabitants per km². At the other end of the ranking, Blousson-Sérian has only 34 inhabitants.

The Gers department has 198,955 inhabitants over 6,257 km², a density of 32 inhabitants per km², 3.4 times lower than the national average (110 per km²). It accounts for 3.2% 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 Gers department by population

# Town Population km² per km² France rank
1 Auch 23,451 72 324 394th
2 L'Isle-Jourdain 9,806 70 139 1,083rd
3 Condom 6,650 97 68 1,677th
4 Fleurance 6,331 43 146 1,775th
5 Eauze 4,176 70 60 2,742nd
6 Lectoure 3,983 85 47 2,889th
7 Mirande 3,739 23 160 3,080th
8 Vic-Fezensac 3,627 54 67 3,176th
9 Gimont 3,217 28 117 3,583rd
10 Pavie 2,699 25 109 4,198th
11 Samatan 2,621 34 78 4,340th
12 Nogaro 2,378 11 215 4,741st
13 Mauvezin 2,321 32 72 4,840th
14 Lombez 2,268 20 116 4,971st
15 Masseube 1,909 21 91 5,814th
16 Pujaudran 1,807 17 104 6,097th
17 Riscle 1,739 37 48 6,329th
18 Cazaubon 1,700 56 31 6,452nd
19 Plaisance 1,456 14 106 7,373rd
20 Barcelonne-du-Gers 1,421 20 70 7,516th

Largest towns by area in the Gers department

# Town Population km² per km² France rank
1 Condom 6,650 97 68 248th
2 Lectoure 3,983 85 47 354th
3 Auch 23,451 72 324 496th
4 L'Isle-Jourdain 9,806 70 139 533rd
5 Eauze 4,176 70 60 542nd
6 Montréal 1,191 63 19 696th
7 Castelnau d'Auzan Labarrère 1,209 57 21 876th
8 Cazaubon 1,700 56 31 909th
9 Vic-Fezensac 3,627 54 67 967th
10 Barran 706 53 13 1,029th

Most densely populated towns in the Gers department

# Town Population km² per km² France rank
1 Auch 23,451 72 324 2,793rd
2 Ségoufielle 1,219 5.2 233 3,904th
3 Nogaro 2,378 11 215 4,219th
4 Mirande 3,739 23 160 5,625th
5 Cologne 1,003 6.5 154 5,848th
6 Fleurance 6,331 43 146 6,137th
7 L'Isle-Jourdain 9,806 70 139 6,411th
8 Duran 892 6.6 135 6,578th
9 Gimont 3,217 28 117 7,607th
10 Lombez 2,268 20 116 7,644th

All towns in the Gers department (458)

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

Other departments in Occitanie

Ariège (09) Aude (11) Aveyron (12) Gard (30) Haute-Garonne (31) 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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