| City : | St. Marys City |
| County : | Auglaize County, Craven County, Glacier County, Ogemaw County, Smith County, Somerset County |
| State : | Ohio (OH) |
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| Land Area : | 4.59 sq mi |
| Water Area : | 0.03 sq mi |
| Latitude : | 40.5475612 |
| Longitude : | -84.3935769 |
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| Population (2010): | 8,332 |
| Population Estimate (2012) : | 8,241 |
| Population Density : | 1,815.83/sq mi |
| Housing Units (2012) : | 3,620 |
| Median Household Income (2012) : | $40,684 (Ohio : $48,246, USA : $53,046) |
| Median Family Income (2012) : | $53,750 (Ohio : $61,163, USA : $64,585) |
| Median House Price (2012) : | $94,300 (Ohio : $133,700, USA : $181,400) |