You can get ancestry.com free at your local Family History Center and Heritage Quest free from most local Public Libraries. 1900 has birth month and year.
1900 United States Federal Census Name: William Lanham [William Lamband] Age: 18 Birth Date: Oct 1884 Birthplace: South Carolina Home in 1900: Pacolet, Spartanburg, South Carolina [Spartanburg] Race: White Gender: Male Relation to Head of House: Boarder Marital Status: Single Father's Birthplace: South Carolina Mother's Birthplace: South Carolina Occupation: Household Members: Name Age Susan Jette 47 Lola Jette 27 Lou Jette 10 Charlie Jette 22Susan's brother William Lanham 18
Source Citation: Year: 1900; Census Place: Pacolet, Spartanburg, South Carolina; Roll: 1541; Page: 22B; Enumeration District: 91; FHL microfilm: 1241541.
Source Information: Ancestry.com. 1900 United States Federal Census [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2004.