Spanish Fork is a city in Utah County, Utah, United States. It is part of the Provo–Orem Metropolitan Statistical Area. The 2020 census reported a population of 42,602. Spanish Fork, Utah is the 20th largest city in Utah based on official 2017 estimates from the US Census Bureau.

The Provo–Orem, UT Metropolitan Statistical Area, as defined by the United States Office of Management and Budget, is an area consisting of two counties in Utah, anchored by the cities of Provo and Orem. As of the 2020 census, the MSA had a population of 671,185.