Monterosi

Monterosi is a municipality (comune) in the Province of Viterbo in the region of Lazio in Italy, located about 30 km (18,64 mi) north of the Grande Raccordo Anulare of Rome, about 40 km (24,85 mi) south of Viterbo.

Monterosi
Comune
Comune di Monterosi
Location of Monterosi
Monterosi Location of Monterosi in Italy Show map of Italy Monterosi Monterosi (Lazio) Show map of Lazio
Coordinates: 42°11′N 12°18′E
Country	Italy
Region	Lazio
Province	Viterbo (VT)
Government
• Mayor	Sandro Giglietti
Area [1]
• Total	10.68 km2 (4.12 sq mi)
Elevation	276 m (906 ft)
Population  (2025)[2]
• Total	4,761
• Density	450/km2 (1,200/sq mi)
Demonym	Monterosini
Time zone	UTC+1 (CET)
• Summer (DST)	UTC+2 (CEST)
Postal code	01030
Dialing code	0761
Patron saint	St. Vincent and Anastasius
Saint day	14 September and 22 January

History

Monterosi was the location of one of the two known shrines of the Roman god Mutunus Tutunus.^[3]

Geography

Monterosi's territory is located halfway through between Rome and Viterbo along the Via Cassia, on the north-Easter foot of the Sabatine Hills, not far from Lake Bracciano. Within its borders lies the small Monterosi lake, legacy of a now-extinct volcanic activity in the region.

Monterosi borders the following municipalities: Nepi, Sutri, Trevignano Romano.

Demographics

Monterosi was the fastest growing municipality in Italy between 2011 and 2021.

Historical population

Year Pop. ±% 1871 867 —     1881 684 −21.1% 1901 788 +15.2% 1911 834 +5.8% 1921 900 +7.9% 1931 876 −2.7% 1936 868 −0.9% 1951 979 +12.8%	Year Pop. ±% 1961 986 +0.7% 1971 1,009 +2.3% 1981 1,324 +31.2% 1991 1,751 +32.3% 2001 2,381 +36.0% 2011 3,868 +62.5% 2021 4,775 +23.4%
Source: ISTAT[4][5]