1860 Census
Furguson     Thos B          28  Male    Il     IN      Owen Spencer Po
1870 Census
Ferguson     William         30  Male    Nj     IN      Owen Franklin Twp
Furguson     Isaac           22  Male    In     IN      Owen Washington Twp
1900 Census
Ferguson        Harriet          64  Female  In      IN      Owen Jefferson Twp
1920 Census
Ferguson        Harvey F         42  Male    In      IN      Owen Morgan Twp
Ferguson        Augustus W       46  Male    In      IN      Owen Wayne Twp
The 1830 Census was copied from two sources; Accelerated Indexing Systems International, Inc and the INDIANA Historical Society.  Many spellings of the FERGUSON surname and different numbers, one may be the page number of  the census and one may be the household number.  As this is an index, the original census should be consulted.

IN 1830-Owen Co
FURGUSON            WILLIAM                     OWEN              283
FERGUSON            WILLIAM                     OWEN              564

IN - 1840 Census - Owen Co
Information from the IN Historical Society
FERGISON            John           Owen                216