| County : | Ottawa County |
| State : | Ohio (OH) |
| Land Area : | 254.92 sq mi |
| Water Area : | 330.14 sq mi |
| Latitude : | 41.5444667 |
| Longitude : | -83.0092527 |
| Population (2010): | 41,428 |
| Population Estimate (2012) : | 41,445 |
| Population Density : | 162.52/sq mi |
| Housing Units (2012) : | 27,909 |
| Median Household Income (2012) : | $53,850 (Ohio : $48,246, USA : $53,046) |
| Median Family Income (2012) : | $66,291 (Ohio : $61,163, USA : $64,585) |
| Median House Price (2012) : | $141,600 (Ohio : $133,700, USA : $181,400) |
Ottawa County Cities / Towns
| Clay Center Village (276) | Curtice (1,526) | Elmore Village (1,410) |
| Genoa Village (2,336) | Lakeside (694) | Marblehead Village (903) |
| Oak Harbor Village (2,759) | Port Clinton City (6,056) | Put-in-bay Village (138) |
| Rocky Ridge Village (417) | Williston (487) |
Ottawa County Zip Codes
| 43408 (269) | 43412 (4,362) | 43416 (2,891) |
| 43430 (4,783) | 43432 (1,366) | 43433 (95) |
| 43439 (113) | 43440 (4,875) | 43445 (1,161) |
| 43446 (25) | 43447 (3,450) | 43449 (8,278) |
| 43452 (13,811) | 43456 (608) | 43458 (414) |
| 43468 (451) | 43469 (3,149) |