West Hattiesburg, also known as Oak Grove, is, in part, a census designated place defined for statistical purposes in an urbanized area west of Hattiesburg, Mississippi in Lamar County, Mississippi, United States. It is part of the Hattiesburg, Mississippi Metropolitan Statistical Area. The population was 16,305, at the 2000 census. The statistics collected by the Census Bureau reflect the unincorporated area outside the city of Hattiesburg. In local usage, 'West Hattiesburg' also refers to a portion of the city of Hattiesburg located to the west of the rest of the city and extending into the CDP. The city annexed more land from the CDP in 2003. West Hattiesburg apartments for rent comparison page shows most up to date rent information on West Hattiesburg apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.