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| City | Blue Ash |
| State | Ohio (OH) |
| County | Hamilton |
| Country | United States of America |
| Timezone | Eastern Time (America/New_York) |
| Latitude | 39.232003 |
| Longitude | -84.378273 |
| Population | 13,455 |
| Density | 680.9 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 45242, 45241 |
| Area Code | 513 |
| County Seat | Cincinnati |
| School District | Sycamore Community City School District |
Blue Ash is a locality in Hamilton County, Ohio, United States. It has a population of 13,455. The population density is 680.9 people per km². Blue Ash is located at 39.2320°N, 84.3783°W. It observes the Eastern Time (America/New_York) timezone. ZIP code: 45241.
Blue Ash rests in a landscape that gently rolls, a subtle topography hinting at the ancient bedrock beneath. It lies 1.7 miles north of Sycamore Township, OH (from Sycamore Township, OH: bearing 2°T), and is situated 10.0 miles north of Anderson Township. The air here, particularly in the late afternoon, carries a certain clarity, a crispness that seems to sharpen the edges of the well-tended suburban neighborhoods and the manicured green spaces. Oak and maple trees, some of them quite mature, punctuate the residential streets, their leaves forming a dappled canopy that shifts with the season, a quiet testament to the area's deciduous heritage. The land, neither starkly flat nor dramatically hilly, offers a sense of settled repose, a place where nature's contours are softened by human cultivation, creating a harmonious, if domesticated, natural setting. The story of Blue Ash is one of transformation, evolving from agricultural roots into a vibrant hub of commerce and community. Its origins are tied to the fertile land that once dominated the region, a legacy that still whispers in the names of some of its thoroughfares. Today, the local economy thrives on a diverse blend of technology, healthcare, and retail, a testament to its adaptive spirit. Notably, the area boasts a significant corporate presence, drawing talent and investment, yet it retains a character that feels more like a collection of connected neighborhoods than a singular, sprawling metropolis. The presence of a well-regarded public park system, with its sweeping lawns and recreational amenities, serves as a gathering point, a modern iteration of the communal spaces that have always been central to life in Blue Ash.
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This page provides an embedded street and satellite map of Blue Ash, Ohio — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 39.232003, -84.378273. 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 Blue Ash and Hamilton County.
Detailed location data for Blue Ash includes the ZIP code (45242), telephone area code (513), county seat of Hamilton County (Cincinnati), and school district assignment (Sycamore Community City School District). 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 Blue Ash 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. |