I haven't got the actual 1851 census but have the SDFHS Index for the Blandford Forum area and living in Blandford Forum in 1851 were the following Maitlands
Ref 237/11
James Maitland aged 51 born Blandford
George Maitland aged 15, born Blandford
John Maitland, aged 12, born Blandford
Elizabeth Maitland aged 9 born Blandford
at Ref 347/46
Letitia Maitland, aged 77, born Chiselborne
Mary Maitland, aged 25, born Weymouth
at Ref 272/19
William Maitland, aged 47 born Blandford
Sarah Maitland aged 22 born Marylebone, Middx.
Susan Maitland aged 17, born Blandford
William Maitland aged 15 born Blandford
at ref 278/31
Andrew Maitland aged 41 born Blandford
Eliz. Maitland aged 38 born Stickland
Charlotte Maitland aged 10 born Blandford
Anne Maitland aged 8, born Blandford
Eliz. Maitland aged 5 born Blandford
William Maitland aged 3 born Blandford
Thats all the Maitlands in Blandford Forum at that time. Sorry I can't give you the addresses but at least you know who was there now
Good Luck
Mary