| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 5,085 | 9,547 | 14,884 | |
| 2020 | R | 4,944 | 8,892 | 14,062 | |
| 2016 | R | 3,973 | 7,228 | 11,930 | |
| 2012 | R | 5,063 | 6,239 | 11,450 | |
| 2008 | D | 6,405 | 5,860 | 12,509 | |
| 2004 | R | 5,441 | 6,677 | 12,297 | |
| 2000 | R | 4,597 | 5,913 | 10,772 | |
| 1996 | D | 4,419 | 3,947 | 9,742 | |
| 1992 | R | 3,846 | 3,944 | 10,557 | |
| 1988 | R | 3,356 | 5,693 | 9,114 | |
| 1984 | R | 2,865 | 6,405 | 9,325 | |
| 1980 | R | 3,386 | 5,465 | 9,564 | |
| 1976 | R | 3,427 | 5,236 | 8,798 | |
| 1972 | R | 2,525 | 4,992 | 7,776 | |
| 1968 | R | 2,152 | 3,911 | 6,957 | |
| 1964 | D | 3,773 | 2,958 | 6,743 | |
| 1960 | R | 2,651 | 4,418 | 7,082 | |
| 1956 | R | 1,868 | 4,479 | 6,372 | |
| 1952 | R | 1,799 | 4,704 | 6,622 | |
| 1948 | R | 1,714 | 2,943 | 4,899 | |
| 1944 | R | 1,738 | 3,534 | 5,335 | |
| 1940 | R | 2,379 | 3,711 | 6,127 | |
| 1936 | D | 2,902 | 2,663 | 5,861 | |
| 1932 | D | 3,051 | 2,481 | 5,707 | |
| 1928 | R | 871 | 3,555 | 4,469 | |
| 1924 | R | 650 | 3,335 | 4,450 | |
| 1920 | R | 785 | 3,535 | 4,541 | |
| 1916 | R | 1,387 | 1,957 | 3,606 | |
| 1912 | R | 796 | 857 | 3,726 | |
| 1908 | R | 799 | 2,445 | 3,569 | |
| 1904 | R | 591 | 2,653 | 3,507 | |
| 1900 | R | 1,199 | 2,407 | 3,816 | |
| 1896 | R | 1,637 | 2,534 | 4,362 | |
| 1892 | R | 1,416 | 1,635 | 3,451 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Oceana County hugs Lake Michigan's eastern shore and ranks among Michigan's top producers of asparagus and tart cherries. Its rural, agricultural character aligns with a presidential margin that has widened steadily rightward over the past three election cycles.
The Republican margin in Oceana County reached its widest at sixty-one points in 1920. The margin in 2024 was thirty points, in line with the county's deep historical pattern.
Oceana County's loyalty is rooted in its place. Median household income of $62,417, a 86% non-Hispanic-white share, and a population of 26,915 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 Mecosta County and Grundy County.