Waltham is a village and civil parish in North East Lincolnshire, England. It is 4 miles south of Grimsby close to the suburb of Scartho and to the smaller villages of Brigsley, Barnoldby-le-Beck, and Holton le Clay. Less than 2 miles to the east-north-east is the village of New Waltham. In the 2001 census, Waltham had a population of 6,420, reducing slightly t…Waltham is a village and civil parish in North East Lincolnshire, England. It is 4 miles south of Grimsby close to the suburb of Scartho and to the smaller villages of Brigsley, Barnoldby-le-Beck, and Holton le Clay. Less than 2 miles to the east-north-east is the village of New Waltham. In the 2001 census, Waltham had a population of 6,420, reducing slightly to 6,413 at the 2011 census.