1850 Census
Ferguson     Andrew          95  IN      IN      Monroe; Bloomington
Ferguson     Jane            65  MD      IN      Monroe; Bloomington
Ferguson     Amanda          13  IN      IN      Monroe; Indian Creek
Ferguson     Augustine       34  KY      IN      Monroe; Indian Creek
Ferguson     Elizabeth       11  IN      IN      Monroe; Indian Creek
Ferguson     John W          3   IN      IN      Monroe; Indian Creek
Ferguson     Nancy           8   IN      IN      Monroe; Indian Creek
Ferguson     Nancy           38  NC      IN      Monroe; Indian Creek
Ferguson     Sarah           0   IN      IN      Monroe; Indian Creek
1860 Census
Ferguson     Augustus        46  Male    Ky     IN      Monroe Indian Crk Twp
Ferguson     James           26  Male    In     IN      Monroe Indian Crk Twp
Ferguson     W T             24  Male    Ky     IN      Monroe Richland Twp
1870 Census
Ferguson     Charles S       21  Male    In     IN      Monroe Bloomington Twp
Ferguson     Augustine       55  Male    Ky     IN      Monroe Indian Crk Twp
Ferguson     Commodore       23  Male    In     IN      Monroe Indian Crk Twp
1900 Census
Ferguson        Commadore        53  Male    In      IN      Monroe Indian Crk Twp
Ferguson        James H          31  Male    In      IN      Monroe Indian Crk Twp
Ferguson        John S           64  Male    In      IN      Monroe Indian Crk Twp
Fergason        Samuel           47  Male    In      IN      Monroe Van Buren Twp
Fergason        William F        44  Male    In      IN      Monroe Van Buren Twp
1910 Census
Ferguson        Allen M          29  Male    In      IN      Monroe 1-Wd Bloomington
Ferguson        John S           73  Male    In      IN      Monroe 1-Wd Bloomington
Ferguson        Edna             21  Female  In      IN      Monroe 3-Wd Bloomington
Ferguson        Samuel W         57  Male    In      IN      Monroe 3-Wd Bloomington
Ferguson        Fred             31  Male    In      IN      Monroe Indian Crk Twp
Ferguson        Bennett F        25  Male    Ia      IN      Monroe Van Buren Twp
Ferguson        William F        53  Male    In      IN      Monroe Van Buren Twp
1920 Census
Ferguson        A M              39  Male    In      IN      Monroe 3-Wd; Bloomington; Perry Twp
Ferguson        Fred             41  Male    In      IN      Monroe 3-Wd; Bloomington; Perry Twp
Ferguson        William F        63  Male    In      IN      Monroe 3-Wd; Bloomington; Perry Twp 1
Furguson        Elizabeth        64  Female  In      IN      Monroe 3-Wd; Bloomington; Perry Twp 2
Ferguson        Ida B            58  Female  In      IN      Monroe 4-Wd; Bloomington; Bloomington
Ferguson        Charles          1   Male    In      IN      Monroe 5-Wd; Bloomington; Bloomington
Ferguson        Hattie           22  Female  In      IN      Monroe 5-Wd; Bloomington; Bloomington
Ferguson        Jesse D          37  Male    Ia      IN      Monroe 5-Wd; Bloomington; Bloomington
Ferguson        Patrick          49  Male    Il      IN      Monroe 5-Wd; Bloomington; Bloomington
Furgeson        George           40  Male    In      IN      Monroe Ellettsville; Richland Twp 2-P
Ferguson        Lee              29  Male    In      IN      Monroe Perry Twp
Ferguson        Joseph L         69  Male    In      IN      Monroe Van Buren Twp 1-Pct
Ferguson        Samuel B         44  Male    In      IN      Monroe Van Buren Twp 1-Pct
Ferguson        Bennet           35  Male    Ia      IN      Monroe Van Buren Twp 2-Pct

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-Monroe Co
FURGUSON            ANDREW                      MONR              134
FERGUSON            ANDREW                      MONR              266
FERUSON             ASA                         MONR              137
FERGUSON            ASA                         MONR              272
FURGUSON            JOEL                        MONR              142
FERGUSON            JOEL                        MONR              282
FURGUSON            WILLIAM                     MONR              167
FERGUSON            WILLIAM                     MONR              332

IN - 1840 Census - Monroe Co
Information from the IN Historical Society
FERGUSON            Andrew         Monr                239
FERGUSON            Augustine      Monr                264