The following is a list of the municipalities (comuni) of the region of Lazio in Italy.
There are 378 municipalities in Lazio as of 2025:
- 91 in the Province of Frosinone
- 33 in the Province of Latina
- 73 in the Province of Rieti
- 121 in the Metropolitan Metropolitan City of Rome Capital
- 60 in the Province of Viterbo
List
[edit]| Municipality | Province | Population
(2025)[1] |
Area
(km2)[2] |
Density |
|---|---|---|---|---|
| Accumoli | Rieti | 503 | 87.37 | 5.8 |
| Acquafondata | Frosinone | 249 | 25.32 | 9.8 |
| Acquapendente | Viterbo | 5,225 | 131.61 | 39.7 |
| Acuto | Frosinone | 1,817 | 13.47 | 134.9 |
| Affile | Rome | 1,403 | 15.11 | 92.9 |
| Agosta | Rome | 1,675 | 9.50 | 176.3 |
| Alatri | Frosinone | 27,518 | 96.96 | 283.8 |
| Albano Laziale | Rome | 39,662 | 23.80 | 1,666.5 |
| Allumiere | Rome | 3,787 | 92.17 | 41.1 |
| Alvito | Frosinone | 2,469 | 51.72 | 47.7 |
| Amaseno | Frosinone | 4,075 | 77.73 | 52.4 |
| Amatrice | Rieti | 2,181 | 174.40 | 12.5 |
| Anagni | Frosinone | 20,616 | 112.82 | 182.7 |
| Anguillara Sabazia | Rome | 19,038 | 75.24 | 253.0 |
| Anticoli Corrado | Rome | 839 | 16.22 | 51.7 |
| Antrodoco | Rieti | 2,258 | 63.90 | 35.3 |
| Anzio | Rome | 59,789 | 43.65 | 1,369.7 |
| Aprilia | Latina | 74,586 | 178.11 | 418.8 |
| Aquino | Frosinone | 4,903 | 19.24 | 254.8 |
| Arce | Frosinone | 5,388 | 39.52 | 136.3 |
| Arcinazzo Romano | Rome | 1,232 | 28.31 | 43.5 |
| Ardea | Rome | 50,908 | 72.09 | 706.2 |
| Ariccia | Rome | 17,917 | 18.59 | 963.8 |
| Arlena di Castro | Viterbo | 791 | 21.87 | 36.2 |
| Arnara | Frosinone | 2,149 | 12.29 | 174.9 |
| Arpino | Frosinone | 6,572 | 56.24 | 116.9 |
| Arsoli | Rome | 1,352 | 12.20 | 110.8 |
| Artena | Rome | 13,652 | 54.80 | 249.1 |
| Ascrea | Rieti | 203 | 13.98 | 14.5 |
| Atina | Frosinone | 4,096 | 29.89 | 137.0 |
| Ausonia | Frosinone | 2,418 | 19.64 | 123.1 |
| Bagnoregio | Viterbo | 3,302 | 72.81 | 45.4 |
| Barbarano Romano | Viterbo | 985 | 37.56 | 26.2 |
| Bassano in Teverina | Viterbo | 1,273 | 12.17 | 104.6 |
| Bassano Romano | Viterbo | 4,611 | 37.55 | 122.8 |
| Bassiano | Latina | 1,423 | 32.40 | 43.9 |
| Bellegra | Rome | 2,612 | 18.78 | 139.1 |
| Belmonte Castello | Frosinone | 655 | 14.05 | 46.6 |
| Belmonte in Sabina | Rieti | 633 | 23.65 | 26.8 |
| Blera | Viterbo | 2,886 | 92.92 | 31.1 |
| Bolsena | Viterbo | 3,690 | 63.57 | 58.0 |
| Bomarzo | Viterbo | 1,679 | 39.65 | 42.3 |
| Borbona | Rieti | 577 | 47.96 | 12.0 |
| Borgo Velino | Rieti | 903 | 18.29 | 49.4 |
| Borgorose | Rieti | 4,213 | 145.82 | 28.9 |
| Boville Ernica | Frosinone | 8,266 | 28.19 | 293.2 |
| Bracciano | Rome | 18,379 | 143.06 | 128.5 |
| Broccostella | Frosinone | 2,632 | 11.79 | 223.2 |
| Calcata | Viterbo | 902 | 7.63 | 118.2 |
| Camerata Nuova | Rome | 402 | 40.50 | 9.9 |
| Campagnano di Roma | Rome | 10,928 | 46.94 | 232.8 |
| Campodimele | Latina | 557 | 38.38 | 14.5 |
| Campoli Appennino | Frosinone | 1,598 | 32.43 | 49.3 |
| Canale Monterano | Rome | 4,154 | 36.92 | 112.5 |
| Canepina | Viterbo | 2,917 | 20.85 | 139.9 |
| Canino | Viterbo | 5,021 | 124.04 | 40.5 |
| Cantalice | Rieti | 2,414 | 37.62 | 64.2 |
| Cantalupo in Sabina | Rieti | 1,657 | 10.62 | 156.0 |
| Canterano | Rome | 350 | 7.37 | 47.5 |
| Capena | Rome | 10,980 | 29.51 | 372.1 |
| Capodimonte | Viterbo | 1,650 | 61.29 | 26.9 |
| Capranica | Viterbo | 6,341 | 40.97 | 154.8 |
| Capranica Prenestina | Rome | 325 | 20.36 | 16.0 |
| Caprarola | Viterbo | 5,157 | 57.58 | 89.6 |
| Carbognano | Viterbo | 1,973 | 17.41 | 113.3 |
| Carpineto Romano | Rome | 3,947 | 86.29 | 45.7 |
| Casalattico | Frosinone | 519 | 28.38 | 18.3 |
| Casalvieri | Frosinone | 2,424 | 27.27 | 88.9 |
| Casape | Rome | 611 | 5.38 | 113.6 |
| Casaprota | Rieti | 675 | 14.55 | 46.4 |
| Casperia | Rieti | 1,197 | 25.31 | 47.3 |
| Cassino | Frosinone | 34,903 | 83.42 | 418.4 |
| Castel di Tora | Rieti | 273 | 15.49 | 17.6 |
| Castel Gandolfo | Rome | 8,543 | 14.19 | 602.0 |
| Castel Madama | Rome | 7,028 | 28.80 | 244.0 |
| Castel San Pietro Romano | Rome | 850 | 15.29 | 55.6 |
| Castel Sant'Angelo | Rieti | 1,182 | 31.27 | 37.8 |
| Castel Sant'Elia | Viterbo | 2,431 | 23.92 | 101.6 |
| Castelforte | Latina | 4,027 | 29.71 | 135.5 |
| Castelliri | Frosinone | 3,154 | 15.32 | 205.9 |
| Castelnuovo di Farfa | Rieti | 983 | 8.84 | 111.2 |
| Castelnuovo di Porto | Rome | 8,658 | 30.57 | 283.2 |
| Castelnuovo Parano | Frosinone | 846 | 9.88 | 85.6 |
| Castiglione in Teverina | Viterbo | 2,297 | 19.89 | 115.5 |
| Castro dei Volsci | Frosinone | 4,353 | 58.45 | 74.5 |
| Castrocielo | Frosinone | 3,733 | 27.92 | 133.7 |
| Cave | Rome | 10,871 | 17.88 | 608.0 |
| Ceccano | Frosinone | 22,102 | 61.06 | 362.0 |
| Celleno | Viterbo | 1,314 | 23.82 | 55.2 |
| Cellere | Viterbo | 1,092 | 37.20 | 29.4 |
| Ceprano | Frosinone | 8,018 | 38.03 | 210.8 |
| Cerreto Laziale | Rome | 1,062 | 12.08 | 87.9 |
| Cervara di Roma | Rome | 462 | 31.75 | 14.6 |
| Cervaro | Frosinone | 7,789 | 39.41 | 197.6 |
| Cerveteri | Rome | 38,138 | 134.32 | 283.9 |
| Ciampino | Rome | 38,815 | 13.00 | 2,985.8 |
| Ciciliano | Rome | 1,243 | 18.85 | 65.9 |
| Cineto Romano | Rome | 580 | 10.37 | 55.9 |
| Cisterna di Latina | Latina | 36,177 | 144.16 | 251.0 |
| Cittaducale | Rieti | 6,397 | 71.25 | 89.8 |
| Cittareale | Rieti | 374 | 59.67 | 6.3 |
| Civita Castellana | Viterbo | 15,070 | 84.22 | 178.9 |
| Civitavecchia | Rome | 51,582 | 73.74 | 699.5 |
| Civitella d'Agliano | Viterbo | 1,453 | 32.96 | 44.1 |
| Civitella San Paolo | Rome | 1,999 | 20.75 | 96.3 |
| Colfelice | Frosinone | 1,774 | 14.52 | 122.2 |
| Collalto Sabino | Rieti | 383 | 22.37 | 17.1 |
| Colle di Tora | Rieti | 349 | 14.37 | 24.3 |
| Colle San Magno | Frosinone | 612 | 44.99 | 13.6 |
| Colleferro | Rome | 20,426 | 26.99 | 756.8 |
| Collegiove | Rieti | 129 | 10.61 | 12.2 |
| Collepardo | Frosinone | 866 | 24.68 | 35.1 |
| Collevecchio | Rieti | 1,611 | 26.95 | 59.8 |
| Colli sul Velino | Rieti | 461 | 12.76 | 36.1 |
| Colonna | Rome | 4,257 | 3.55 | 1,199.2 |
| Concerviano | Rieti | 280 | 21.39 | 13.1 |
| Configni | Rieti | 567 | 22.93 | 24.7 |
| Contigliano | Rieti | 3,670 | 53.55 | 68.5 |
| Corchiano | Viterbo | 3,526 | 33.03 | 106.8 |
| Coreno Ausonio | Frosinone | 1,490 | 26.38 | 56.5 |
| Cori | Latina | 10,386 | 85.31 | 121.7 |
| Cottanello | Rieti | 529 | 36.70 | 14.4 |
| Esperia | Frosinone | 3,568 | 108.57 | 32.9 |
| Fabrica di Roma | Viterbo | 8,161 | 34.79 | 234.6 |
| Faleria | Viterbo | 2,002 | 25.68 | 78.0 |
| Falvaterra | Frosinone | 514 | 12.73 | 40.4 |
| Fara in Sabina | Rieti | 13,885 | 54.96 | 252.6 |
| Farnese | Viterbo | 1,350 | 52.38 | 25.8 |
| Ferentino | Frosinone | 19,949 | 81.00 | 246.3 |
| Fiamignano | Rieti | 1,162 | 100.62 | 11.5 |
| Fiano Romano | Rome | 16,678 | 41.19 | 404.9 |
| Filacciano | Rome | 467 | 5.66 | 82.5 |
| Filettino | Frosinone | 535 | 78.08 | 6.9 |
| Fiuggi | Frosinone | 10,195 | 32.98 | 309.1 |
| Fiumicino | Rome | 82,829 | 213.89 | 387.3 |
| Fondi | Latina | 39,916 | 143.92 | 277.3 |
| Fontana Liri | Frosinone | 2,630 | 16.11 | 163.3 |
| Fonte Nuova | Rome | 32,662 | 19.94 | 1,638.0 |
| Fontechiari | Frosinone | 1,205 | 16.15 | 74.6 |
| Forano | Rieti | 3,268 | 17.69 | 184.7 |
| Formello | Rome | 13,850 | 31.15 | 444.6 |
| Formia | Latina | 36,807 | 74.17 | 496.3 |
| Frascati | Rome | 22,867 | 22.48 | 1,017.2 |
| Frasso Sabino | Rieti | 734 | 4.39 | 167.2 |
| Frosinone | Frosinone | 43,015 | 46.85 | 918.1 |
| Fumone | Frosinone | 1,942 | 14.84 | 130.9 |
| Gaeta | Latina | 19,137 | 29.20 | 655.4 |
| Gallese | Viterbo | 2,543 | 37.17 | 68.4 |
| Gallicano nel Lazio | Rome | 6,504 | 25.70 | 253.1 |
| Gallinaro | Frosinone | 1,183 | 17.74 | 66.7 |
| Gavignano | Rome | 1,861 | 15.04 | 123.7 |
| Genazzano | Rome | 5,732 | 32.07 | 178.7 |
| Genzano di Roma | Rome | 22,484 | 17.90 | 1,256.1 |
| Gerano | Rome | 1,128 | 10.12 | 111.5 |
| Giuliano di Roma | Frosinone | 2,305 | 33.54 | 68.7 |
| Gorga | Rome | 654 | 26.19 | 25.0 |
| Gradoli | Viterbo | 1,228 | 43.81 | 28.0 |
| Graffignano | Viterbo | 2,073 | 29.10 | 71.2 |
| Greccio | Rieti | 1,459 | 17.86 | 81.7 |
| Grottaferrata | Rome | 20,307 | 18.40 | 1,103.6 |
| Grotte di Castro | Viterbo | 2,379 | 33.42 | 71.2 |
| Guarcino | Frosinone | 1,489 | 40.37 | 36.9 |
| Guidonia Montecelio | Rome | 89,011 | 79.47 | 1,120.1 |
| Ischia di Castro | Viterbo | 2,116 | 104.95 | 20.2 |
| Isola del Liri | Frosinone | 10,601 | 16.01 | 662.1 |
| Itri | Latina | 10,488 | 101.10 | 103.7 |
| Jenne | Rome | 320 | 31.45 | 10.2 |
| Labico | Rome | 6,385 | 11.75 | 543.4 |
| Labro | Rieti | 346 | 11.75 | 29.4 |
| Ladispoli | Rome | 40,794 | 25.95 | 1,572.0 |
| Lanuvio | Rome | 12,937 | 43.76 | 295.6 |
| Lariano | Rome | 13,275 | 22.53 | 589.2 |
| Latera | Viterbo | 778 | 22.43 | 34.7 |
| Latina | Latina | 127,796 | 277.62 | 460.3 |
| Lenola | Latina | 4,088 | 45.24 | 90.4 |
| Leonessa | Rieti | 2,051 | 204.04 | 10.1 |
| Licenza | Rome | 950 | 17.99 | 52.8 |
| Longone Sabino | Rieti | 513 | 34.33 | 14.9 |
| Lubriano | Viterbo | 858 | 16.69 | 51.4 |
| Maenza | Latina | 2,952 | 42.13 | 70.1 |
| Magliano Romano | Rome | 1,363 | 20.52 | 66.4 |
| Magliano Sabina | Rieti | 3,452 | 43.23 | 79.9 |
| Mandela | Rome | 907 | 13.72 | 66.1 |
| Manziana | Rome | 7,746 | 24.00 | 322.8 |
| Marano Equo | Rome | 768 | 7.65 | 100.4 |
| Marcellina | Rome | 7,033 | 15.36 | 457.9 |
| Marcetelli | Rieti | 53 | 11.08 | 4.8 |
| Marino | Rome | 46,424 | 24.19 | 1,919.1 |
| Marta | Viterbo | 3,200 | 33.54 | 95.4 |
| Mazzano Romano | Rome | 2,910 | 29.07 | 100.1 |
| Mentana | Rome | 22,565 | 24.27 | 929.7 |
| Micigliano | Rieti | 120 | 36.85 | 3.3 |
| Minturno | Latina | 20,452 | 42.14 | 485.3 |
| Mompeo | Rieti | 519 | 10.89 | 47.7 |
| Montalto di Castro | Viterbo | 8,671 | 189.63 | 45.7 |
| Montasola | Rieti | 396 | 12.75 | 31.1 |
| Monte Compatri | Rome | 11,700 | 24.57 | 476.2 |
| Monte Porzio Catone | Rome | 8,579 | 9.13 | 939.6 |
| Monte Romano | Viterbo | 1,862 | 86.14 | 21.6 |
| Monte San Biagio | Latina | 6,011 | 65.10 | 92.3 |
| Monte San Giovanni Campano | Frosinone | 11,900 | 48.71 | 244.3 |
| Monte San Giovanni in Sabina | Rieti | 664 | 30.76 | 21.6 |
| Montebuono | Rieti | 837 | 19.73 | 42.4 |
| Montefiascone | Viterbo | 12,951 | 104.93 | 123.4 |
| Monteflavio | Rome | 1,128 | 16.84 | 67.0 |
| Montelanico | Rome | 2,004 | 35.14 | 57.0 |
| Monteleone Sabino | Rieti | 1,124 | 19.04 | 59.0 |
| Montelibretti | Rome | 5,103 | 45.43 | 112.3 |
| Montenero Sabino | Rieti | 265 | 22.59 | 11.7 |
| Monterosi | Viterbo | 4,759 | 10.68 | 445.6 |
| Monterotondo | Rome | 41,148 | 40.94 | 1,005.1 |
| Montopoli di Sabina | Rieti | 4,098 | 37.94 | 108.0 |
| Montorio Romano | Rome | 1,933 | 23.39 | 82.6 |
| Moricone | Rome | 2,409 | 19.59 | 123.0 |
| Morlupo | Rome | 8,480 | 24.08 | 352.2 |
| Morolo | Frosinone | 3,148 | 26.57 | 118.5 |
| Morro Reatino | Rieti | 335 | 15.74 | 21.3 |
| Nazzano | Rome | 1,305 | 12.40 | 105.2 |
| Nemi | Rome | 1,861 | 7.33 | 253.9 |
| Nepi | Viterbo | 9,535 | 83.71 | 113.9 |
| Nerola | Rome | 1,939 | 17.10 | 113.4 |
| Nespolo | Rieti | 205 | 8.65 | 23.7 |
| Nettuno | Rome | 48,145 | 71.64 | 672.0 |
| Norma | Latina | 3,773 | 31.22 | 120.9 |
| Olevano Romano | Rome | 6,325 | 26.16 | 241.8 |
| Onano | Viterbo | 865 | 24.51 | 35.3 |
| Oriolo Romano | Viterbo | 3,696 | 19.31 | 191.4 |
| Orte | Viterbo | 9,120 | 69.56 | 131.1 |
| Orvinio | Rieti | 387 | 24.69 | 15.7 |
| Paganico Sabino | Rieti | 161 | 9.31 | 17.3 |
| Palestrina | Rome | 22,092 | 47.02 | 469.8 |
| Paliano | Frosinone | 7,859 | 70.64 | 111.3 |
| Palombara Sabina | Rome | 13,110 | 75.80 | 173.0 |
| Pastena | Frosinone | 1,268 | 42.16 | 30.1 |
| Patrica | Frosinone | 3,043 | 27.31 | 111.4 |
| Percile | Rome | 217 | 17.76 | 12.2 |
| Pescorocchiano | Rieti | 1,806 | 94.78 | 19.1 |
| Pescosolido | Frosinone | 1,387 | 44.90 | 30.9 |
| Petrella Salto | Rieti | 1,026 | 102.93 | 10.0 |
| Piansano | Viterbo | 2,016 | 26.61 | 75.8 |
| Picinisco | Frosinone | 1,106 | 62.15 | 17.8 |
| Pico | Frosinone | 2,588 | 32.93 | 78.6 |
| Piedimonte San Germano | Frosinone | 6,301 | 17.32 | 363.8 |
| Piglio | Frosinone | 4,300 | 35.38 | 121.5 |
| Pignataro Interamna | Frosinone | 2,387 | 24.41 | 97.8 |
| Pisoniano | Rome | 717 | 12.92 | 55.5 |
| Pofi | Frosinone | 3,860 | 30.68 | 125.8 |
| Poggio Bustone | Rieti | 1,971 | 22.38 | 88.1 |
| Poggio Catino | Rieti | 1,307 | 14.98 | 87.2 |
| Poggio Mirteto | Rieti | 6,065 | 26.40 | 229.7 |
| Poggio Moiano | Rieti | 2,811 | 26.95 | 104.3 |
| Poggio Nativo | Rieti | 2,557 | 16.50 | 155.0 |
| Poggio San Lorenzo | Rieti | 553 | 8.67 | 63.8 |
| Poli | Rome | 2,220 | 21.75 | 102.1 |
| Pomezia | Rome | 64,665 | 86.57 | 747.0 |
| Pontecorvo | Frosinone | 12,119 | 88.80 | 136.5 |
| Pontinia | Latina | 15,111 | 112.10 | 134.8 |
| Ponza | Latina | 3,294 | 10.16 | 324.2 |
| Ponzano Romano | Rome | 1,265 | 19.52 | 64.8 |
| Posta | Rieti | 535 | 66.01 | 8.1 |
| Posta Fibreno | Frosinone | 1,029 | 9.80 | 105.0 |
| Pozzaglia Sabina | Rieti | 305 | 24.98 | 12.2 |
| Priverno | Latina | 13,698 | 56.98 | 240.4 |
| Proceno | Viterbo | 536 | 42.02 | 12.8 |
| Prossedi | Latina | 1,140 | 35.37 | 32.2 |
| Riano | Rome | 10,400 | 25.43 | 409.0 |
| Rieti | Rieti | 45,083 | 206.46 | 218.4 |
| Rignano Flaminio | Rome | 10,115 | 38.56 | 262.3 |
| Riofreddo | Rome | 745 | 12.38 | 60.2 |
| Ripi | Frosinone | 5,027 | 31.61 | 159.0 |
| Rivodutri | Rieti | 1,123 | 26.79 | 41.9 |
| Rocca Canterano | Rome | 170 | 15.84 | 10.7 |
| Rocca d'Arce | Frosinone | 842 | 11.58 | 72.7 |
| Rocca di Cave | Rome | 371 | 11.09 | 33.5 |
| Rocca di Papa | Rome | 17,853 | 39.72 | 449.5 |
| Rocca Massima | Latina | 1,111 | 18.17 | 61.1 |
| Rocca Priora | Rome | 12,030 | 28.27 | 425.5 |
| Rocca Santo Stefano | Rome | 902 | 9.57 | 94.3 |
| Rocca Sinibalda | Rieti | 801 | 49.56 | 16.2 |
| Roccagiovine | Rome | 247 | 8.41 | 29.4 |
| Roccagorga | Latina | 4,109 | 24.49 | 167.8 |
| Roccantica | Rieti | 526 | 16.72 | 31.5 |
| Roccasecca | Frosinone | 6,729 | 43.33 | 155.3 |
| Roccasecca dei Volsci | Latina | 1,035 | 23.50 | 44.0 |
| Roiate | Rome | 638 | 10.35 | 61.6 |
| Rome | Rome | 2,747,290 | 1,287.36 | 2,134.0 |
| Ronciglione | Viterbo | 8,390 | 52.53 | 159.7 |
| Roviano | Rome | 1,239 | 8.50 | 145.8 |
| Sabaudia | Latina | 19,322 | 145.37 | 132.9 |
| Sacrofano | Rome | 7,444 | 28.43 | 261.8 |
| Salisano | Rieti | 474 | 17.60 | 26.9 |
| Sambuci | Rome | 822 | 8.30 | 99.0 |
| San Biagio Saracinisco | Frosinone | 298 | 31.21 | 9.5 |
| San Cesareo | Rome | 16,332 | 23.64 | 690.9 |
| San Donato Val di Comino | Frosinone | 1,859 | 37.64 | 49.4 |
| San Felice Circeo | Latina | 10,042 | 32.63 | 307.8 |
| San Giorgio a Liri | Frosinone | 2,944 | 15.71 | 187.4 |
| San Giovanni Incarico | Frosinone | 3,020 | 24.71 | 122.2 |
| San Gregorio da Sassola | Rome | 1,397 | 35.45 | 39.4 |
| San Lorenzo Nuovo | Viterbo | 2,007 | 26.74 | 75.1 |
| San Polo dei Cavalieri | Rome | 2,779 | 42.53 | 65.3 |
| San Vito Romano | Rome | 3,012 | 12.66 | 237.9 |
| San Vittore del Lazio | Frosinone | 2,316 | 27.51 | 84.2 |
| Sant'Ambrogio sul Garigliano | Frosinone | 865 | 17.11 | 50.6 |
| Sant'Andrea del Garigliano | Frosinone | 1,258 | 21.36 | 58.9 |
| Sant'Angelo Romano | Rome | 4,980 | 18.02 | 276.4 |
| Sant'Apollinare | Frosinone | 1,806 | 41.10 | 43.9 |
| Sant'Elia Fiumerapido | Frosinone | 5,599 | 43.89 | 127.6 |
| Sant'Oreste | Rome | 3,419 | 21.60 | 158.3 |
| Santa Marinella | Rome | 18,431 | 9.03 | 2,041.1 |
| Santi Cosma e Damiano | Latina | 6,883 | 48.91 | 140.7 |
| Santopadre | Frosinone | 1,184 | 31.61 | 37.5 |
| Saracinesco | Rome | 182 | 11.16 | 16.3 |
| Scandriglia | Rieti | 3,278 | 63.35 | 51.7 |
| Segni | Rome | 8,949 | 60.86 | 147.0 |
| Selci | Rieti | 1,135 | 7.73 | 146.8 |
| Sermoneta | Latina | 9,937 | 45.00 | 220.8 |
| Serrone | Frosinone | 2,925 | 15.39 | 190.1 |
| Settefrati | Frosinone | 705 | 50.68 | 13.9 |
| Sezze | Latina | 23,698 | 100.47 | 235.9 |
| Sgurgola | Frosinone | 2,354 | 19.22 | 122.5 |
| Sonnino | Latina | 7,426 | 63.82 | 116.4 |
| Sora | Frosinone | 24,735 | 72.13 | 342.9 |
| Soriano nel Cimino | Viterbo | 7,853 | 78.54 | 100.0 |
| Sperlonga | Latina | 3,009 | 19.49 | 154.4 |
| Spigno Saturnia | Latina | 2,846 | 38.74 | 73.5 |
| Stimigliano | Rieti | 2,211 | 11.38 | 194.3 |
| Strangolagalli | Frosinone | 2,265 | 10.57 | 214.3 |
| Subiaco | Rome | 8,499 | 63.23 | 134.4 |
| Supino | Frosinone | 4,592 | 35.59 | 129.0 |
| Sutri | Viterbo | 6,707 | 60.94 | 110.1 |
| Tarano | Rieti | 1,375 | 19.98 | 68.8 |
| Tarquinia | Viterbo | 15,856 | 279.34 | 56.8 |
| Terelle | Frosinone | 278 | 31.65 | 8.8 |
| Terracina | Latina | 44,774 | 136.59 | 327.8 |
| Tessennano | Viterbo | 291 | 14.73 | 19.8 |
| Tivoli | Rome | 55,115 | 68.65 | 802.8 |
| Toffia | Rieti | 1,070 | 11.33 | 94.4 |
| Tolfa | Rome | 4,662 | 168.27 | 27.7 |
| Torre Cajetani | Frosinone | 1,317 | 11.99 | 109.8 |
| Torri in Sabina | Rieti | 1,216 | 26.31 | 46.2 |
| Torrice | Frosinone | 4,658 | 18.06 | 257.9 |
| Torricella in Sabina | Rieti | 1,290 | 25.79 | 50.0 |
| Torrita Tiberina | Rome | 1,096 | 10.78 | 101.7 |
| Trevi nel Lazio | Frosinone | 1,701 | 54.32 | 31.3 |
| Trevignano Romano | Rome | 5,766 | 38.99 | 147.9 |
| Trivigliano | Frosinone | 1,611 | 12.64 | 127.5 |
| Turania | Rieti | 238 | 8.51 | 28.0 |
| Tuscania | Viterbo | 8,205 | 208.69 | 39.3 |
| Vacone | Rieti | 223 | 9.19 | 24.3 |
| Valentano | Viterbo | 2,848 | 43.50 | 65.5 |
| Vallecorsa | Frosinone | 2,359 | 39.28 | 60.1 |
| Vallemaio | Frosinone | 891 | 18.54 | 48.1 |
| Vallepietra | Rome | 228 | 52.94 | 4.3 |
| Vallerano | Viterbo | 2,376 | 15.45 | 153.8 |
| Vallerotonda | Frosinone | 1,381 | 59.66 | 23.1 |
| Vallinfreda | Rome | 266 | 16.72 | 15.9 |
| Valmontone | Rome | 15,620 | 40.91 | 381.8 |
| Varco Sabino | Rieti | 151 | 24.75 | 6.1 |
| Vasanello | Viterbo | 3,961 | 28.96 | 136.8 |
| Vejano | Viterbo | 2,156 | 44.31 | 48.7 |
| Velletri | Rome | 52,877 | 118.23 | 447.2 |
| Ventotene | Latina | 687 | 1.75 | 392.6 |
| Veroli | Frosinone | 19,511 | 119.65 | 163.1 |
| Vetralla | Viterbo | 13,358 | 113.77 | 117.4 |
| Vicalvi | Frosinone | 725 | 8.21 | 88.3 |
| Vico nel Lazio | Frosinone | 2,046 | 45.85 | 44.6 |
| Vicovaro | Rome | 3,528 | 35.94 | 98.2 |
| Vignanello | Viterbo | 4,252 | 20.53 | 207.1 |
| Villa Latina | Frosinone | 1,113 | 17.02 | 65.4 |
| Villa San Giovanni in Tuscia | Viterbo | 1,217 | 5.28 | 230.5 |
| Villa Santa Lucia | Frosinone | 2,455 | 17.77 | 138.2 |
| Villa Santo Stefano | Frosinone | 1,576 | 20.10 | 78.4 |
| Viterbo | Viterbo | 66,393 | 406.23 | 163.4 |
| Viticuso | Frosinone | 286 | 20.86 | 13.7 |
| Vitorchiano | Viterbo | 5,250 | 30.14 | 174.2 |
| Vivaro Romano | Rome | 156 | 12.54 | 12.4 |
| Zagarolo | Rome | 18,876 | 28.04 | 673.2 |