| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 5,064 | 14,377 | 19,831 | |
| 2020 | R | 4,966 | 14,237 | 19,628 | |
| 2016 | R | 3,941 | 12,054 | 16,995 | |
| 2012 | R | 5,419 | 10,587 | 16,360 | |
| 2008 | R | 7,175 | 9,780 | 17,149 | |
| 2004 | R | 4,810 | 10,468 | 15,403 | |
| 2000 | R | 4,776 | 8,701 | 13,785 | |
| 1996 | R | 4,840 | 6,851 | 13,339 | |
| 1992 | R | 4,652 | 6,682 | 15,022 | |
| 1988 | R | 4,657 | 9,018 | 13,716 | |
| 1984 | R | 4,617 | 8,769 | 13,528 | |
| 1980 | R | 4,911 | 7,886 | 13,950 | |
| 1976 | R | 6,151 | 7,860 | 14,246 | |
| 1972 | R | 4,354 | 8,834 | 13,297 | |
| 1968 | R | 4,790 | 7,650 | 13,438 | |
| 1964 | D | 7,559 | 6,210 | 13,889 | |
| 1960 | R | 5,277 | 8,957 | 14,295 | |
| 1956 | R | 4,435 | 9,061 | 13,575 | |
| 1952 | R | 4,347 | 8,713 | 13,476 | |
| 1948 | R | 5,439 | 6,941 | 12,652 | |
| 1944 | R | 4,810 | 7,479 | 12,387 | |
| 1940 | R | 5,690 | 7,676 | 13,426 | |
| 1936 | D | 6,970 | 5,848 | 13,027 | |
| 1932 | D | 7,235 | 5,590 | 12,981 | |
| 1928 | R | 4,077 | 7,373 | 11,514 | |
| 1924 | R | 4,133 | 6,093 | 11,154 | |
| 1920 | R | 4,750 | 6,514 | 11,560 | |
| 1916 | D | 3,372 | 2,898 | 6,657 | |
| 1912 | D | 2,766 | 1,125 | 6,211 | |
| 1908 | D | 3,684 | 2,991 | 7,052 | |
| 1904 | R | 2,827 | 3,416 | 6,836 | |
| 1900 | D | 3,488 | 3,218 | 6,979 | |
| 1896 | D | 3,678 | 3,137 | 6,886 | |
| 1892 | D | 2,801 | 2,499 | 6,244 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
DeKalb County in northeastern Indiana has delivered lopsided Republican presidential margins for decades, with 2024's R+47 reflecting a rural, predominantly white electorate with deep roots in agriculture and small manufacturing.
The Republican margin in DeKalb County reached its widest at forty-eight points in 2016. The margin in 2024 was forty-seven points, in line with the county's deep historical pattern.
DeKalb County's loyalty is rooted in its place. Median household income of $74,331, a 95% non-Hispanic-white share, and a population of 43,807 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Wabash County and Noble County.
