| County : | Guernsey County |
| State : | Ohio (OH) |
| Land Area : | 522.25 sq mi |
| Water Area : | 6.05 sq mi |
| Latitude : | 40.0566648 |
| Longitude : | -81.4978750 |
| Population (2010): | 40,087 |
| Population Estimate (2012) : | 40,056 |
| Population Density : | 76.76/sq mi |
| Housing Units (2012) : | 19,193 |
| Median Household Income (2012) : | $39,293 (Ohio : $48,246, USA : $53,046) |
| Median Family Income (2012) : | $49,950 (Ohio : $61,163, USA : $64,585) |
| Median House Price (2012) : | $93,900 (Ohio : $133,700, USA : $181,400) |
Guernsey County Cities / Towns
| Buffalo (401) | Byesville Village (2,438) | Cambridge City (10,635) |
| Cumberland Village (367) | Fairview Village (83) | Kimbolton (144) |
| Lore City Village (325) | Old Washington Village (279) | Pleasant City Village (447) |
| Quaker City Village (502) | Salesville Village (129) | Senecaville Village (457) |
Guernsey County Zip Codes
| 43722 (420) | 43723 (4,984) | 43725 (20,357) |
| 43732 (1,703) | 43733 (95) | 43736 (55) |
| 43749 (2,339) | 43750 (164) | 43755 (1,620) |
| 43762 (5,413) | 43768 (275) | 43772 (1,879) |
| 43773 (3,248) | 43778 (1,526) | 43780 (2,106) |
| 43832 (7,479) | 43837 (1,973) | 43973 (1,996) |
| 43983 (440) | 44699 (937) |