| province = [[ProvinceMetropolitan City of Rome Capital|Rome]]
| frazioni = Valle Martella
| mayor_party =
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}}
'''Zagarolo''' is a town and ''[[comune]]'' in the [[provinceMetropolitan City of Rome Capital|Metropolitan City of Rome]], in the region of [[Lazio]] of central [[Italy]]. It has 17,803 inhabitants and a total area of {{convert|28|km2|mi2}}. It lies {{convert|34|km|mi}} south-east of Rome, and it borders the municipalities of [[Colonna]], [[Gallicano nel Lazio]], [[Monte Compatri]], [[Palestrina]], [[Rome]], [[San Cesareo]] (former [[frazione]] of Zagarolo). The historicalZagarolo's town center of Zagarolo lies on a very narrow [[tuff]] hill, {{convert|2|km|mi}} long and about {{convert|100|m|ft}} wide, at an elevation of {{convert|310|m|ft}}, surrounded by green valleys. The south continuation of the important pilgrim route [[Via Francigena]] passes through the countryside of Zagarolo.
Zagarolo ismay anhave historicalorigins townin whose[[Gabii]], originan iscity said to date backfounded toin the 5th century BC, whenwhich the ancient city of [[Gabii]],is a few kilometers from today's Zagarolo, was founded.<ref name="offSite">[http://www.zagarolo.rm.gov.it] Official site of the town of Zagarolo (in Italian)</ref> The town center is of medieval origin and its current urban plan was developed in the 16th century. Zagarolo is the birthplace of composer [[Goffredo Petrassi]].<ref name=britannica>Petrassi, Goffredo. (2008). In Encyclopædia Britannica: http://www.britannica.com/eb/article-9059491</ref>
