Explore Carthagena, Ohio, with this interactive street and satellite map. You can “grab” the Carthagena, OH street map and move it around to re-centre it. You can change between standard map view and satellite map view by clicking the small square in the bottom left-hand corner of the map. You can use the zoom buttons on the lower right side of the map to zoom in or out to street-level detail. You will find live weather, local and world news below.
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| City | Carthagena |
| State | Ohio (OH) |
| County | Mercer |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 40.436714 |
| Longitude | -84.559955 |
| Population | 480 |
| Density | 12.0 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 45822 |
| Area Code | 234, 330 |
| County Seat | Celina |
Carthagena is a locality in Mercer County, Ohio, United States. It is a small community with a population of 480. The population density is 12.0 people per km². Carthagena is located at 40.4367°N, 84.5600°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 45822.
Carthagena rests in the gently rolling terrain of Mercer County, a landscape defined by broad fields that stretch towards the horizon, broken only by the occasional cluster of trees or the glint of distant water. It lies 14.2 miles east of Noble, IN (from Noble, IN: bearing 99°T), and is situated 7.8 miles south of Celina. The air here often carries the scent of freshly turned earth or the sweet perfume of ripening crops, a testament to the agricultural heart of the region. Sunlight, when it breaks through the often-cloudy skies, casts a soft, diffused glow, illuminating the muted greens and browns of the farmland. The very shape of the land, a series of subtle swells and shallow valleys, feels as though it has been smoothed by generations of wind and rain, creating a comforting, almost maternal contour to the countryside. The history of Carthagena is deeply entwined with the agricultural heritage of western Ohio, a story told in the enduring presence of family farms and the quiet diligence of its residents. This is a place where the local economy has long been sustained by the bounty of the soil, with crops like corn and soybeans dominating the fertile fields that surround the settlement. The spirit of community, nurtured by shared labor and a deep respect for the land, is palpable. While no grand monuments mark its past, the enduring character of Carthagena is found in the steadfastness of its people and the quiet continuity of life, where traditions are honored and the rhythm of the seasons dictates the pace of the day.
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This page provides an embedded street and satellite map of Carthagena, Ohio — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 40.436714, -84.559955. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Carthagena and Mercer County.
Detailed location data for Carthagena includes the ZIP code (45822), telephone area code (234, 330), county seat of Mercer County (Celina), and school district assignment. These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Carthagena is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |