| Name | Birth Date | Birth Place | Death Date | County | Mother's Maiden Name | Number | Box |
| Jabaai, Tillie | 20 Oct 1870 | Iowa | 14 Oct 1931 | Jasper | Serrenburg | B50-0117 | D2643 |
| Jackson, Charles A. | 21 Mar 1861 | Iowa | 28 Apr 1929 | Jasper | | 50-2180 | D2241 |
| Jackson, Daniel A. | 13 Apr 1855 | Iowa | 18 Apr 1928 | Jasper | Dennis | 50-1887 | D2240 |
| Jackson, Juliaette | 27 Mar 1843 | Connecticut | 26 Apr 1921 | Jasper | Scott | 50-2979 | D2238 |
| Jackson, Laurance Andrew | 16 Jan 1904 | Iowa | 06 Jul 1930 | Jasper | Rolls | A50-0159 | D2616 |
| Jackson, Wellington | 13 Jan 1850 | Canada | 04 Jan 1928 | Jasper | Jane | 50-1793 | D2240 |
| Jacobs, John | 17 Feb 1858 | Ohio | 08 Apr 1931 | Jasper | | C50-0031 | D2643 |
| Jaennette, Gene Francis | 07 Nov 1928 | Iowa | 14 Jun 1934 | Jasper | Neal | C50-0057 | D2732 |
| James, Carroll Ray | 07 Mar 1933 | Iowa | 07 Mar 1933 | Jasper | Connelly | D50-0034 | D2699 |
| James, Mary Ann | 20 Mar 1870 | England | 19 Nov 1933 | Jasper | Robinson | C50-0088 | D2699 |
| Jansen, Earl Lester | 22 Aug 1928 | Iowa | 20 Feb 1929 | Jasper | Fopna | 50-2129 | D2241 |
| Jansen, Gerrit J. | 25 Mar 1864 | Holland | 12 Jan 1929 | Jasper | Sents | 50-2124 | D2241 |
| Jansen, Gysbertje | 26 Aug 1872 | Netherlands | 28 Jan 1928 | Jasper | Vande Heetkamp | 50-1802 | D2240 |
| Jarnagin, Henry Laten | 25 Jun 1859 | Iowa | 01 Nov 1931 | Jasper | Ethrington | B50-0129 | D2643 |
| Jarnagin, Isaac Wesley | 15 Aug 1843 | Ohio | 27 Dec 1929 | Jasper | Setty | 50-2334 | D2241 |
| Jarnigan, Charles Bertram | 16 May 1882 | Iowa | 16 Apr 1932 | Jasper | McDuff | C50-0055 | D2670 |
| Jarnigan, Henry Asbury | 29 Nov 1859 | Iowa | 08 Jul 1933 | Jasper | Washburn | D50-0114 | D2699 |
| Jarnigan, Veva | 20 Aug 1879 | Iowa | 21 Mar 1933 | Jasper | Huddleston | D50-0051 | D2699 |
| Jasper, Lulu Parsons | 07 Apr 1870 | Iowa | 19 Dec 1929 | Jasper | Widell | 50-2333 | D2241 |
| Jay, Eliza | 01 Nov 1844 | North Carolina | 17 Oct 1919 | Jasper | Rayl | 50-2573 | D2238 |
| Jeffreys, Earl Emanuel | 07 Aug 1893 | Ohio | 03 Nov 1927 | Jasper | Deser | 50-1749 | D2240 |
| Jeffries, Daisy | 26 Apr 1883 | Iowa | 08 Jul 1926 | Jasper | Heifner | 50-1341 | D2240 |
| Jeffries, Francis M. | 01 Dec 1839 | Indiana | 27 Dec 1928 | Jasper | Catey | 50-2078 | D2240 |
| Jeffries, James W. | 28 Jul 1866 | Iowa | 09 May 1926 | Jasper | Elvyott | 50-1295 | D2240 |
| Jeffries, John | 14 Feb 1862 | Iowa | 11 Jul 1929 | Jasper | Schilling | 50-2232 | D2241 |
| Jenkins, Vetura | 20 May 1856 | Ohio | 04 Jun 1928 | Jasper | Young | 50-1930 | D2240 |
| Jenks, Clarence Seward | 03 Mar 1865 | Iowa | 18 Jun 1932 | Jasper | Poulsen | C50-0083 | D2670 |
| Jenks, Hercelia Ann | 27 Nov 1824 | Virginia | 27 Apr 1927 | Jasper | Wilson | 50-1612 | D2240 |
| Jensen, Edwin James | 22 Aug 1928 | Iowa | 28 Apr 1930 | Jasper | Fopma | A50-0072 | D2616 |
| Jensen, James J. | c.1884 | Denmark | 05 Mar 1926 | Jasper | | 50-1245 | D2240 |
| Jensen, Wilhelmina | 13 Feb 1866 | Netherlands | 04 Sep 1933 | Jasper | Bos | D50-0134 | D2699 |
| Jensma, Frederick J. | 25 Apr 1914 | Iowa | 20 Feb 1935 | Jasper | VanDam | C50-0024 | D2765 |
| Jensma, Sarah | 21 Feb 1848 | Holland | 09 Aug 1934 | Jasper | Boch | C50-0067 | D2732 |
| Jenson, Peter | 25 Oct 1856 | Sweden | 09 Dec 1932 | Jasper | Nelson | C50-0149 | D2670 |
| Jesanitshig, Karl | 04 Nov 1862 | Austria | 10 Apr 1929 | Jasper | | 50-2188 | D2241 |
| Jessup, Margaret | 1836 | Ireland | 03 Jul 1919 | Jasper | Unknown | 50-2520 | D2238 |
| Jickling, John David | 22 Jun 1837 | Canada | 08 Mar 1925 | Jasper | Whitby | 50-0969 | D2239 |
| Jimenez, Amparo Ester | 11 Jul 1929 | Iowa | 14 Dec 1929 | Jasper | Sifuentes | 50-2342 | D2241 |
| Joboai, Marion | 07 Mar 1898 | Iowa | 11 Sep 1926 | Jasper | De Jong | 50-1400 | D2240 |
| Johnson, Albert | 19 Aug 1840 | Indiana | 04 Jul 1928 | Jasper | Johnson | 50-1960 | D2240 |
| Johnson, Anna Wilson | 06 Feb 1858 | Indiana | 16 Oct 1934 | Jasper | Stokes | E50-0145 | D2732 |
| Johnson, Cecilia O. | 28 Nov 1859 | Iowa | 14 Sep 1935 | Jasper | Hollingsworth | C50-0093 | D2765 |
| Johnson, Charles | c.1863 | | 03 Nov 1933 | Jasper | | C50-0085 | D2699 |
| Johnson, Christina | 24 Mar 1861 | Sweden | 01 Feb 1930 | Jasper | Akers | A50-0042 | D2616 |
| Johnson, Earl | 22 May 1893 | Iowa | 28 Feb 1921 | Jasper | Strum | 50-2980 | D2238 |
| Johnson, Eli Jessup | 22 Apr 1868 | Indiana | 17 Dec 1935 | Jasper | Johnson | F50-0167 | D2765 |
| Johnson, Ella M. | 06 Jan 1846 | Pennsylvania | 13 Jan 1926 | Jasper | Graham | 50-1205 | D2240 |
| Johnson, Ellen K. | 19 Dec 1855 | New York | 26 Jul 1932 | Jasper | Skillen | J50-0059 | D2670 |
| Johnson, Gertrude | 09 Sep 1877 | Iowa | 27 Feb 1929 | Jasper | Turkstra | 50-2133 | D2241 |
| Johnson, James W. | c.1848 | Denmark | 01 Apr 1926 | Jasper | | 50-1285 | D2240 |
| Johnson, Jean | 16 Apr 1920 | Iowa | 09 Jun 1920 | Jasper | Stuffelbain | 50-2776 | D2238 |
| Johnson, Lavina J. | 07 Jul 1857 | Ohio | 22 Apr 1936 | Jasper | Boone | G50-0044 | D2796 |
| Johnson, Macy William | 04 Dec 1927 | Iowa | 13 Feb 1928 | Jasper | Skow | 50-1835 | D2240 |
| Johnson, Nelson | 04 Mar 1846 | Sweden | 11 Mar 1931 | Jasper | | C50-0021 | D2643 |
| Johnson, Pearl | 08 May 1900 | Iowa | 02 Feb 1920 | Jasper | Meech | 50-2657 | D2238 |
| Johnson, Phillis Doreen | 04 Dec 1926 | Iowa | 04 Dec 1926 | Jasper | Thompson | 50-1445 | D2240 |
| Johnson, Robert | 20 Jul 1929 | Iowa | 23 Apr 1930 | Jasper | Montgomery | A50-0082 | D2616 |
| Johnson, Stephen | 07 Apr 1837 | Ohio | 18 Dec 1919 | Jasper | | 50-2603 | D2238 |
| Johnson, Sue | 20 Oct 1847 | New York | 13 Sep 1927 | Jasper | Skillen | 50-1721 | D2240 |
| Johnson, William Alonzo | 18 Jan 1866 | Kansas | 01 Aug 1935 | Jasper | Caraby [sic-Carnaby] | C50-0088 | D2765 |
| Johnson, William Edward | 18 Oct 1851 | Illinois | 03 Apr 1935 | Jasper | Janes | C50-0045 | D2765 |
| Johnston (Baby Boy) | 04 May 1935 | Iowa | 04 May 1935 | Jasper | Jarnigan | F50-0083 | D2765 |
| Johnston (Baby Girl) | 04 May 1935 | Iowa | 04 May 1935 | Jasper | Jarnigan | F50-0082 | D2765 |
| Johnston, Betty Lou | 04 Jul 1934 | Iowa | 04 Jul 1934 | Jasper | Jarnigen | E50-0116 | D2732 |
| Johnston, Robert | 16 Apr 1851 | Scotland | 30 May 1933 | Jasper | Barrie | D50-0078 | D2699 |
| Joiner, Bennett | 06 Mar 1829 | New York | 04 Mar 1929 | Jasper | Bennett | 50-2151 | D2241 |
| Jolly, Louis Herman | 15 Aug 1846 | France | 03 Oct 1928 | Jasper | | 50-2011 | D2240 |
| Jones, Adolphus Archer | 22 Sep 1854 | Kentucky | 06 Dec 1934 | Jasper | Winfrey | E50-0164 | D2732 |
| Jones, Charles E. | 25 Feb 1852 | Ohio | 06 Sep 1926 | Jasper | Grove | 50-1423 | D2240 |
| Jones, Clyde Alexander | 19 Mar 1894 | Iowa | 16 Aug 1920 | Jasper | Waring | 50-2819 | D2238 |
| Jones, David (Red Horse) | c.1879 | | 08 Nov 1919 | Jasper | | 50-2579 | D2238 |
| Jones, Edward Valoris | 10 Oct 1914 | Iowa | 20 Nov 1920 | Jasper | Spohn | 50-2892 | D2238 |
| Jones, Elizabeth | 18 Nov 1860 | South Wales | 23 Dec 1925 | Jasper | Davis | 50-1175 | D2239 |
| Jones, Ella Belle | 15 Aug 1859 | Pennsylvania | 01 Sep 1927 | Jasper | Newmier | 50-1701 | D2240 |
| Jones, Irma Gene | 24 May 1931 | Iowa | 20 Oct 1931 | Jasper | Baker | C50-0085 | D2643 |
| Jones, John S. | 28 May 1855 | Wales | 14 Oct 1930 | Jasper | Jones | A50-0218 | D2616 |
| Jones, John Thomas | 09 Mar 1857 | Wales | 10 Apr 1929 | Jasper | Davis | 50-2185 | D2241 |
| Jones, Keith Eugene | 14 Oct 1920 | Iowa | 28 Jun 1935 | Jasper | Cross | F50-0086 | D2765 |
| Jones, Laura Lavina | 18 Apr 1871 | Iowa | 20 Sep 1934 | Jasper | Ferguson | E50-0135 | D2732 |
| Jones, Lloyd D. | 16 Dec 1840 | Ohio | 03 Feb 1921 | Jasper | Triplet | 50-2981 | D2238 |
| Jones, Losia Minnie | 18 Nov 1888 | Iowa | 12 Nov 1931 | Jasper | Ogle | B50-0128 | D2643 |
| Jones, Nancy | Dec 1855 | Iowa | 09 Sep 1919 | Jasper | Sopher | 50-2557 | D2238 |
| Jones, Nettie C. | 28 Sep 1857 | Pennsylvania | 03 Jan 1927 | Jasper | Chittenden | 50-1481 | D2240 |
| Jones, Rebecca | 19 Aug 1846 | Kentucky | 23 Nov 1920 | Jasper | Davis | 50-2893 | D2238 |
| Jones, Rees | 10 Jun 1854 | Wales | 29 Oct 1933 | Jasper | | D50-0158 | D2699 |
| Jones, Sarah Ellen | 17 Aug 1873 | Wales | 13 Jan 1935 | Jasper | Jones | F50-0004 | D2765 |
| Jones, Thomas Jefferson | 18 Jan 1856 | Missouri | 11 Oct 1926 | Jasper | Points | 50-1406 | D2240 |
| Jones, William Henry | 09 Oct 1856 | Indiana | 03 Jan 1920 | Jasper | Cook | 50-2623 | D2238 |
| Jones, William Preston | 27 Jan 1868 | Illinois | 26 Nov 1928 | Jasper | | 50-2045 | D2240 |
| Jontz, Charles H. | 15 Nov 1862 | Illinois | 24 Aug 1935 | Jasper | Smith | F50-0121 | D2765 |
| Jontz, Rachel Louisa | 07 Oct 1852 | Illinois | 05 Mar 1934 | Jasper | Lukecart | E50-0046 | D2732 |
| Jontz, Robert Fulton | 09 Oct 1848 | Pennsylvania | 16 Dec 1926 | Jasper | Wood | 50-1474 | D2240 |
| Jontz, Will R. | 06 Oct 1873 | Iowa | 05 Jul 1930 | Jasper | Smith | A50-0149 | D2616 |
| Jortensen, Louis Jergen | 22 Feb 1856 | Denmark | 10 Jan 1925 | Jasper | Jacobsen | 50-0936 | D2239 |
| Joy, Anna H. | 13 Nov 1850 | Missouri | 01 Jul 1931 | Jasper | Cox | C50-0057 | D2643 |
| Joy, Florence Eastman | 10 Jun 1872 | Iowa | 28 Oct 1930 | Jasper | Hadley | A50-0226 | D2616 |
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