- Location: Dunklin County, Missouri
- Legal status: Fourth-class city
- Population: 686 (Change since 1990: +9.1%)
- Founded: ca. 1840 by William H. Horner
- Name origin: William Harrison Horner
- Located on MO 164 between Arbyrd and Cotton Plant
- Latitude: 36°02'29" N (+36.0414)
- Longitude: 90°06'48" W (-90.1134)
- Public Land Survey: T. 16 N., R. 9 E., Sec. 7 & 8
- Civil township: Clay
- Land area: 0.79 square miles (507.1 acres)
As the crow flies, Hornersville is...
Name origin
Named for William H. Horner, town founder and store owner
| Year | Population | Percent change |
|---|
| 1900 | 240 | -- |
| 1910 | 390 | +62.5% |
| 1920 | 647 | +65.9% |
| 1930 | 877 | +35.5% |
| 1940 | 964 | +9.9% |
| 1950 | 875 | -9.2% |
| 1960 | 752 | -14.1% |
| 1970 | 693 | -7.8% |
| 1980 | 704 | +1.6% |
| 1990 | 629 | -10.7% |
| 2000 | 686 | +9.1% |