

La mappa rappresentata i comuni italiani, confini relativi all'anno 2023, in verde sono evidenziati i comuni montani e non montani in base alla classificazione statistica dell' ISTAT o alla classificazione con valore giuridico in base alla legge n. 991 del 25 luglio 1952.
Sul piano nazionale, ad oggi risultano pubblicati e fruibili due differenti sistemi per la determinazione del numero di comuni montani italiani*:
Secondo la legge n. 991 del 1952, su un totale di 7.901 comuni italiani nel 2023, 3.419 risultano totalmente montani e 643 parzialmente montani, per una superficie complessiva pari al 61% del territorio nazionale (ovvero 187.121 km²) e una popolazione corrispondente al 33,3% di quella complessiva (ossia 19.675.880 abitanti).
La classificazione ISTAT, invece, è uno studio a fini statistici che suddivide il territorio italiano in zone altimetriche. In base a tale classificazione, 2.487 comuni rientrano nella zona altimetrica di montagna (costiera e interna), con una superficie pari al 35,2% del territorio nazionale (ovvero 106.308 km²) e una popolazione residente pari al 12,1% del totale (ossia 7.156.415 abitanti).
{
"region_code": "01",
"region_label": "Piemonte",
"region_surface": 25386.697100000012,
"region_population": 4240736,
"surface_percentage": 100,
"mountain_surface_percentage": 48,
"mountain_places_surface": 10976.822500000002,
"mountain_places_population": 468991,
"id": "01Piemonte",
"relative": {
"region_surface": 98.0247461125067,
"mountain_places_surface": 80.26553077046883,
"region_population": 41.89937164897856,
"mountain_places_population": 43.12832393798129
},
"percentage": {
"region_surface": -1,
"mountain_places_surface": 43.23848217340568,
"region_population": -1,
"mountain_places_population": 11.059188782324577
}
}{
"region_code": "02",
"region_label": "Valle d'Aosta/Vallée d'Aoste",
"region_surface": 3260.8545000000004,
"region_population": 122955,
"surface_percentage": 20,
"mountain_surface_percentage": 20,
"mountain_places_surface": 3260.8545000000004,
"mountain_places_population": 122955,
"id": "02Valle d'Aosta/Vallée d'Aoste",
"relative": {
"region_surface": 0,
"mountain_places_surface": 22.321691890213966,
"region_population": 0,
"mountain_places_population": 10.671118906699933
},
"percentage": {
"region_surface": -1,
"mountain_places_surface": 99.99999999999999,
"region_population": -1,
"mountain_places_population": 100
}
}{
"region_code": "03",
"region_label": "Lombardia",
"region_surface": 23863.09749999998,
"region_population": 9950742,
"surface_percentage": 94,
"mountain_surface_percentage": 43,
"mountain_places_surface": 9634.781099999997,
"mountain_places_population": 1011522,
"id": "03Lombardia",
"relative": {
"region_surface": 91.27469972253918,
"mountain_places_surface": 70.18733570120052,
"region_population": 100,
"mountain_places_population": 94.01620815472785
},
"percentage": {
"region_surface": -1,
"mountain_places_surface": 40.37523251120272,
"region_population": -1,
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}
}{
"region_code": "04",
"region_label": "Trentino-Alto Adige/Südtirol",
"region_surface": 13604.7211,
"region_population": 1075317,
"surface_percentage": 57,
"mountain_surface_percentage": 57,
"mountain_places_surface": 13604.7211,
"mountain_places_population": 1075317,
"id": "04Trentino-Alto Adige/Südtirol",
"relative": {
"region_surface": 45.82672468648211,
"mountain_places_surface": 100,
"region_population": 9.690503060353262,
"mountain_places_population": 100
},
"percentage": {
"region_surface": -1,
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"region_population": -1,
"mountain_places_population": 100
}
}{
"region_code": "05",
"region_label": "Veneto",
"region_surface": 18345.369400000018,
"region_population": 4838253,
"surface_percentage": 75,
"mountain_surface_percentage": 27,
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"id": "05Veneto",
"relative": {
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"region_population": 47.979244971426425,
"mountain_places_population": 29.82506823745697
},
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}
}{
"region_code": "06",
"region_label": "Friuli-Venezia Giulia",
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"region_population": 1192191,
"surface_percentage": 37,
"mountain_surface_percentage": 21,
"mountain_places_surface": 3414.3244999999997,
"mountain_places_population": 60517,
"id": "06Friuli-Venezia Giulia",
"relative": {
"region_surface": 20.69684429666211,
"mountain_places_surface": 23.474190313348,
"region_population": 10.879722973239042,
"mountain_places_population": 4.814609850581074
},
"percentage": {
"region_surface": -1,
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"region_population": -1,
"mountain_places_population": 5.076116159239585
}
}{
"region_code": "07",
"region_label": "Liguria",
"region_surface": 5416.151999999999,
"region_population": 1502624,
"surface_percentage": 28,
"mountain_surface_percentage": 21,
"mountain_places_surface": 3523.4200000000005,
"mountain_places_population": 748691,
"id": "07Liguria",
"relative": {
"region_surface": 9.548675458552715,
"mountain_places_surface": 24.293453959148618,
"region_population": 14.038450365275521,
"mountain_places_population": 69.36339845985012
},
"percentage": {
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"mountain_places_surface": 65.05393497080587,
"region_population": -1,
"mountain_places_population": 49.82557179973167
}
}{
"region_code": "08",
"region_label": "Emilia-Romagna",
"region_surface": 22501.431999999986,
"region_population": 4426929,
"surface_percentage": 90,
"mountain_surface_percentage": 29,
"mountain_places_surface": 5760.071200000001,
"mountain_places_population": 184468,
"id": "08Emilia-Romagna",
"relative": {
"region_surface": 85.24207455473386,
"mountain_places_surface": 41.08981143032121,
"region_population": 43.79392837878965,
"mountain_places_population": 16.44086556048512
},
"percentage": {
"region_surface": -1,
"mountain_places_surface": 25.59868723021719,
"region_population": -1,
"mountain_places_population": 4.166951853079189
}
}{
"region_code": "09",
"region_label": "Toscana",
"region_surface": 22987.437099999996,
"region_population": 3651152,
"surface_percentage": 91,
"mountain_surface_percentage": 29,
"mountain_places_surface": 5766.6366,
"mountain_places_population": 477934,
"id": "09Toscana",
"relative": {
"region_surface": 87.39523669179454,
"mountain_places_surface": 41.139114962915485,
"region_population": 35.900218431677445,
"mountain_places_population": 43.96715222346243
},
"percentage": {
"region_surface": -1,
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"region_population": -1,
"mountain_places_population": 13.089950788134812
}
}{
"region_code": "10",
"region_label": "Umbria",
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"region_population": 854137,
"surface_percentage": 39,
"mountain_surface_percentage": 17,
"mountain_places_surface": 2480.1301999999996,
"mountain_places_population": 133918,
"id": "10Umbria",
"relative": {
"region_surface": 23.05263237081027,
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"region_population": 7.439945534025107,
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},
"percentage": {
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"region_population": -1,
"mountain_places_population": 15.678749427785004
}
}{
"region_code": "11",
"region_label": "Marche",
"region_surface": 9344.2939,
"region_population": 1480839,
"surface_percentage": 42,
"mountain_surface_percentage": 19,
"mountain_places_surface": 2877.9334000000003,
"mountain_places_population": 95934,
"id": "11Marche",
"relative": {
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},
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"region_population": -1,
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}
}{
"region_code": "12",
"region_label": "Lazio",
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"surface_percentage": 71,
"mountain_surface_percentage": 24,
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"id": "12Lazio",
"relative": {
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"region_population": 56.820085742599026,
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},
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}
}{
"region_code": "13",
"region_label": "Abruzzo",
"region_surface": 10831.496400000004,
"region_population": 1269860,
"surface_percentage": 47,
"mountain_surface_percentage": 34,
"mountain_places_surface": 7050.047100000002,
"mountain_places_population": 345375,
"id": "13Abruzzo",
"relative": {
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}
}{
"region_code": "14",
"region_label": "Molise",
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"surface_percentage": 24,
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"id": "14Molise",
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}{
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"region_label": "Campania",
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"region_population": 5592175,
"surface_percentage": 58,
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"id": "15Campania",
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}{
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"region_label": "Puglia",
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"id": "16Puglia",
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}
}{
"region_code": "17",
"region_label": "Basilicata",
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"surface_percentage": 45,
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"id": "17Basilicata",
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}{
"region_code": "18",
"region_label": "Calabria",
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}{
"region_code": "19",
"region_label": "Sicilia",
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"id": "19Sicilia",
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}
}{
"region_code": "20",
"region_label": "Sardegna",
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"region_population": 1575028,
"surface_percentage": 95,
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"id": "20Sardegna",
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}
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