Pollock is a small town in Grant Parish, Louisiana, United States. It is part of the Alexandria, Louisiana Metropolitan Statistical Area. The population was 469 as of the 2010 census, up from 376 at the 2000 census. Pollock and southern Grant Parish have been experiencing residential and business growth in recent years. The population of Pollock increased between the 2000 and 2010 censuses as a result of the annexation of the land surrounding a federal prison, the United States Penitentiary, Pollock.