1820 Census
Furguson            John                     IN    Jefferson; No Twp Listed
1850 Census
Furgeson     Allen           20  IN      IN      Jefferson; Madison
Furgeson     ??              37  Scot.   IN      Jefferson; Madison Ward 5
Furgeson     Elizebeth       15  IN      IN      Jefferson; Madison Ward 5
Furgeson     Mary            13  IN      IN      Jefferson; Madison Ward 5
Fergeson     Allen           20  IA      IN      Jefferson; Shelby
Fergeson     David           16  IA      IN      Jefferson; Shelby
Fergeson     George          11  IA      IN      Jefferson; Shelby
Fergeson     George A        7   IA      IN      Jefferson; Shelby
Fergeson     Harison         14  IA      IN      Jefferson; Shelby
Fergeson     Joel            76  VA      IN      Jefferson; Shelby
Fergeson     John            27  IA      IN      Jefferson; Shelby
Fergeson     Lucinda         18  IA      IN      Jefferson; Shelby
Fergeson     Lydia A         35  IA      IN      Jefferson; Shelby
Fergeson     Martha J        1   IA      IN      Jefferson; Shelby
Fergeson     Mary A          53  KY      IN      Jefferson; Shelby
Fergeson     Polly A         5   IA      IN      Jefferson; Shelby
Fergeson     Sarah E         3   IA      IN      Jefferson; Shelby
Fergeson     William         23  IA      IN      Jefferson; Shelby
1860 Census
Furgason     James           16  Male    Irel   IN      Jefferson 1-Wd Madison
Furgason     Mary            16  Female  Irel   IN      Jefferson 3-Wd Madison
Fergusson    Samuel          31  Male    In     IN      Jefferson 9-Wd Madison
Ferguson     Alex            52  Male    Scot   IN      Jefferson Hanover Twp
Furgerson    Allem           29  Male    In     IN      Jefferson Madison
Furgason     Elizabeth       23  Female  Oh     IN      Jefferson Madison Twp
Furgason     William H       33  Male    In     IN      Jefferson Madison Twp
Furgason     Harrison        23  Male    In     IN      Jefferson Shelby Twp
Furgason     James           44  Male    In     IN      Jefferson Shelby Twp
Furgason     Joel            81  Male    Va     IN      Jefferson Shelby Twp
Fugason      John            39  Male    In     IN      Jefferson Shelby Twp
1870 Census
Ferguson     Alex            57  Male    Scot   IN      Jefferson Hanover Twp
Furgeson     James           24  Male    Ky     IN      Jefferson Madison
Furgeson     Nellie          37  Female  In     IN      Jefferson Madison
Ferguson     Allen           38  Male    In     IN      Jefferson Madison Twp
Ferguson     Thomas          60  Male    Irel   IN      Jefferson Saluda Twp
Furgeson     David           49  Male    In     IN      Jefferson Shelby Twp
Furgeson     Harrison        34  Male    In     IN      Jefferson Shelby Twp
Furgerson    James           54  Male    In     IN      Jefferson Shelby Twp
Furgerson    James W         21  Male    In     IN      Jefferson Shelby Twp
Furgeson     Mary Ann        72  Female  Ky     IN      Jefferson Shelby Twp
Furgeson     Thomas          25  Male    In     IN      Jefferson Shelby Twp
Furgeson     William         44  Male    In     IN      Jefferson Shelby Twp
1900 Census
Ferguson        George           62  Male    In      IN      Jefferson 6-Wd Madison
Ferguson        Theodore         32  Male    In      IN      Jefferson 6-Wd Madison
Ferguson        Marion           28  Male    In      IN      Jefferson Graham Twp
Ferguson        Albert           41  Male    In      IN      Jefferson Hanover Twp
Ferguson        Robert           57  Male    In      IN      Jefferson Hanover Twp
Ferguson        Scott            45  Male    In      IN      Jefferson Lancaster Twp
Ferguson        John H           30  Male    In      IN      Jefferson Madison Twp
Ferguson        Allen            71  Male    In      IN      Jefferson Monroe Twp
Ferguson        Francis W        40  Male    In      IN      Jefferson Monroe Twp
Ferguson        Ollen            30  Male    Ky      IN      Jefferson Monroe Twp
Fergison        James            41  Male    In      IN      Jefferson Saluda Twp
Fergison        Rebecca          65  Female  In      IN      Jefferson Saluda Twp
Ferguson        Alax             45  Male    In      IN      Jefferson Shelby Twp
Ferguson        David            63  Male    In      IN      Jefferson Shelby Twp
Ferguson        Harrison         35  Male    In      IN      Jefferson Shelby Twp
Ferguson        William          36  Male    In      IN      Jefferson Shelby Twp
Ferguson        William H        77  Male    In      IN      Jefferson Shelby Twp
1910 Census
Ferguson        Anna             24  Female  In      IN      Jefferson 6-Wd Madison
Ferguson        George           72  Male    In      IN      Jefferson 6-Wd Madison
Ferguson        John H           40  Male    In      IN      Jefferson 7-Wd Madison
Ferguson        Frank            25  Male    In      IN      Jefferson Hanover Twp
Ferguson        Artie            33  Male    In      IN      Jefferson Madison Twp
Ferguson        Elmer            20  Male    In      IN      Jefferson Madison Twp
Ferguson        Harrison H       52  Male    In      IN      Jefferson Madison Twp
Ferguson        Allen            80  Male    In      IN      Jefferson Monroe Twp
Ferguson        Samuel           27  Male    In      IN      Jefferson Monroe Twp
Ferguson        Violet M         3   Female  In      IN      Jefferson Monroe Twp
Ferguson        Albert           45  Male    In      IN      Jefferson Republican Twp
Ferguson        Rebecca          73  Female  In      IN      Jefferson Saluda Twp
Ferguson        William E        30  Male    In      IN      Jefferson Saluda Twp
Fergeson        William H        88  Male    In      IN      Jefferson Shelby Twp
Ferguson        Alexander        53  Male    In      IN      Jefferson Shelby Twp
Ferguson        John B           72  Male    In      IN      Jefferson Shelby Twp
Ferguson        Allen            39  Male    In      IN      Jefferson Smyrna Twp
Ferguson        Crozier          7   Male    In      IN      Jefferson Smyrna Twp
Ferguson        Marion           37  Male    In      IN      Jefferson Smyrna Twp
1920 Census
Fergison        Arthur           39  Male    In      IN      Jefferson 3-Wd; Madison; Madison twp
Furgison        Marion           59  Male    In      IN      Jefferson 3-Wd; Madison; Madison twp
Furgison        May              23  Female  In      IN      Jefferson 3-Wd; Madison; Madison twp
Ferguson        Frank R          35  Male    In      IN      Jefferson Hanover; Hanover Twp
Ferguson        Artie E          42  Male    In      IN      Jefferson Madison Twp
Ferguson        Elmer            30  Male    In      IN      Jefferson Madison Twp
Ferguson        Harrison         55  Male    In      IN      Jefferson Madison Twp
Furgeson        John             53  Male    In      IN      Jefferson Madison Twp
Furguson        Sydney R         30  Male    In      IN      Jefferson Madison Twp
Furguson        Samuel           36  Male    In      IN      Jefferson Monroe Twp
Ferguson        Abert            56  Male    In      IN      Jefferson Republican Twp
Furgeson        Rodger           84  Female  In      IN      Jefferson Saluda Twp
Furgerson       Alex             64  Male    In      IN      Jefferson Shelby Twp
Ferguson        Crozier          16  Male    In      IN      Jefferson Smyrna 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-Jefferson Co
FURGUSON            JOEL                        JEFF              134
FERGUSON            JOEL                        JEFF              266
FORGSON             JOHN                        JEFF              75
FORGISON            JOHN                        JEFF              149

IN - 1840 Census -  Jefferson Co
Information from the IN Historical Society
FURGUSSON           David          Jeff                349
FERGUSON            Joel           jeff                216

IN 1850 CENSUS - JEFFERSON
SOURCE:ACCELERATED INDEXING SYSTEMS INTERNATIONAL, INC.
FURGENSON           ALEX A         JEFF          92
FURGENSON           JAMES          JEFF         172
FURGERSON           ALEXANDER      JEFF         165
FURGESON            ALLEN          JEFF          10