Most populated municipalities

The 20 municipalities in Lazio with the most residents, and the 20 with the fewest, out of 114 with a published figure.

	Municipality	Region	Postal code	Residents
1	Roma	Lazio	00144	2,748,109
2	Latina	Lazio	04020	127,564
3	Viterbo	Lazio	01024	65,949
4	Anzio	Lazio	00042	58,949
5	Velletri	Lazio	00049	52,528
6	Nettuno	Lazio	00048	48,033
7	Marino	Lazio	00047	46,347
8	Rieti	Lazio	02024	45,276
9	Frosinone	Lazio	03029	43,417
10	Monterotondo	Lazio	00015	40,979
11	Formia	Lazio	04023	37,136
12	Cisterna di Latina	Lazio	04012	36,266
13	Sora	Lazio	03039	24,884
14	Sezze	Lazio	04018	23,697
15	Frascati	Lazio	00044	22,794
16	Ceccano	Lazio	03023	22,320
17	Grottaferrata	Lazio	00046	20,494
18	Gaeta	Lazio	04024	19,423
19	Anguillara Sabazia	Lazio	00061	19,091
20	Ariccia	Lazio	00072	17,987

Least populated municipalities

	Municipality	Region	Postal code	Residents
1	Acquafondata	Lazio	03040	261
2	Castel di Tora	Lazio	02020	266
3	Collalto Sabino	Lazio	02022	391
4	Montasola	Lazio	02040	391
5	Orvinio	Lazio	02035	396
6	Civita	Lazio	01022	788
7	Rocca Sinibalda	Lazio	02026	791
8	Anticoli Corrado	Lazio	00022	833
9	Licenza	Lazio	00026	889
10	Calcata	Lazio	01030	905
11	Castelnuovo di Farfa	Lazio	02031	1,000
12	Roccasecca dei Volsci	Lazio	04010	1,043
13	Toffia	Lazio	02039	1,075
14	Gerano	Lazio	00025	1,152
15	Casperia	Lazio	02041	1,178
16	Torri in Sabina	Lazio	02049	1,211
17	Roviano	Lazio	00027	1,234
18	Ciciliano	Lazio	00020	1,236
19	Pastena	Lazio	03020	1,263
20	Arsoli	Lazio	00023	1,372

Most populated municipalities — All of Italy

One row per municipalities. The figures are published by municipality, so every postal code inside one shares them; the postal code shown is one of that municipality's.