- Located at intersection US 61 and Route EE just west of I-55 interchange
- Latitude: 36°31'01" N (+36.5170)
- Longitude: 89°36'37" W (-89.6103)
- Civil township: La Font
- Land area: 1.1 square miles
As the crow flies, Marston is...
| Year | Population | Percent change |
|---|
| 1910 | 258 | -- |
| 1920 | 438 | +69.8% |
| 1930 | 350 | -20.1% |
| 1940 | 468 | +33.7% |
| 1950 | 610 | +30.3% |
| 1960 | 631 | +3.4% |
| 1970 | 666 | +5.5% |
| 1980 | 742 | +11.4% |
| 1990 | 691 | -6.9% |
| 2000 | 610 | -11.7% |