The map above is centered on Dublin, Ireland, near O'Connell Bridge, with a default 15 km radius. Drag to move it, search for a different address, or change the radius and unit using the controls.
Dublin sits on the east coast of Ireland, where the River Liffey meets the Irish Sea. The city is bounded on the east by the sea (Dublin Bay), with suburbs spreading inland to the north, west, and south. Distances here are measured from O'Connell Bridge (53.347° N, 6.260° W), the historic centre. Distances here are straight-line from O'Connell Bridge — the same way the radius map measures them.
Population figure: Central Statistics Office (CSO), Census of Population 2022 (Dublin City).
Working outward from O'Connell Bridge, a 25 km radius reaches suburbs and commuter towns such as Swords (~13 km north), Bray (~19 km southeast), and Maynooth (~23 km west). The M50 ring road wraps around the city, and its loop is often used as shorthand for the edge of Dublin proper.
Also known as: Baile Átha Cliath, The Pale, The Fair City, Dub.
Coverage at common radii, including notable places that fall just outside the circle. Use these as a quick reference — check exact boundaries before relying on a circle for real-estate, retail, or service-area decisions.
Place locations: USGS GNIS and GeoNames (CC BY 4.0). Distances are straight-line (great-circle) from O'Connell Bridge, the same way the radius map measures them.
A 3 km radius from O'Connell Bridge covers the city centre on both sides of the Liffey — Temple Bar, St. Stephen's Green, Trinity College, Christ Church, the Liberties, Smithfield, and the inner docklands.
A 5 km radius covers the central city plus the inner suburbs — Ballsbridge, Sandymount, Drumcondra, Phibsborough, Phoenix Park, Inchicore, Rathmines, and Donnybrook.
A 10 km radius reaches the outer suburbs in every landward direction — Dublin Airport (~8 km north) just inside, along with Blanchardstown (~9 km northwest), Dún Laoghaire (~10 km southeast), and Tallaght (~10 km southwest).
A 25 km radius reaches Swords (~13 km north), Bray (~19 km southeast), and Maynooth (~23 km west) along with the inner commuter belt, while leaving Naas (~31 km southwest) and Drogheda (~42 km north) just outside.
A 50 km radius reaches the outer commuter belt — Naas (~31 km southwest) and Drogheda (~42 km north) — a practical radius for the daily commuting zone into Dublin.
City-specific scenarios where a radius is the right tool — and a sensible radius to start with.
A 3–5 km radius from O'Connell Bridge covers the central rental market — the highest-density area, where most apartments are located. Farther out (10+ km), housing shifts toward semi-detached and detached homes typical of suburban Dublin.
Suggested starting radius: 3–5 km for inner-city Dublin
The M50 motorway loops around Dublin and "inside the M50" is common shorthand for Dublin proper. Use a 10 km radius to filter jobs, services, or housing around this zone — it reaches suburbs like Blanchardstown (~9 km northwest) and Tallaght (~10 km southwest).
Suggested starting radius: 10 km around the M50
A 25 km radius from O'Connell Bridge reaches commuter towns such as Swords (~13 km north), Bray (~19 km southeast), and Maynooth (~23 km west). It is a practical service-area radius for retail catchments and recruitment across the Greater Dublin Area.
Suggested starting radius: 25 km for the GDA
Dublin Airport sits about 8 km north of O'Connell Bridge. A 10 km radius reaches the airport comfortably, and a 15 km radius adds a buffer for hotels and ground-transport zones around it.
Suggested starting radius: 10–15 km to include Dublin Airport
Local geography and infrastructure that change how a radius behaves here. Skipping these is the most common reason a radius decision goes sideways.
O'Connell Bridge sits close to Dublin Bay, so a radius drawn east extends toward the water rather than land. When you draw a wide circle, keep in mind that part of the eastern side may fall over the sea, which tends to concentrate reachable population on the west and north sides.
Dublin's M50 motorway loops around the city, and "inside the M50" is common shorthand for the urban core. A 10 km radius is a useful approximation, reaching suburbs such as Blanchardstown (~9 km northwest), Dún Laoghaire (~10 km southeast), and Tallaght (~10 km southwest). The N3, N4, N7, and M1 are the radial spokes.
South of Dublin the Wicklow Mountains rise, with much of the upland protected as Wicklow Mountains National Park. A southward radius soon reaches this terrain, so a circle drawn south reaches mountains and countryside rather than dense population.
A 10 km radius from O'Connell Bridge reaches Dublin Airport (~8 km north), Blanchardstown (~9 km northwest), Dún Laoghaire (~10 km southeast), and Tallaght (~10 km southwest). Swords (~13 km north), Bray (~19 km southeast), and Maynooth (~23 km west) sit just outside.
A 25 km radius reaches Swords (~13 km north), Bray (~19 km southeast), and Maynooth (~23 km west), along with the inner commuter belt. Naas (~31 km southwest) and Drogheda (~42 km north) fall just outside.
Yes. Dublin Airport sits about 8 km north of O'Connell Bridge, comfortably inside a 10 km radius and well within a 15 km circle.
"Inside the M50" refers to the area enclosed by the M50 motorway, Dublin's outer ring road. A 10 km radius from O'Connell Bridge is a useful approximation, reaching suburbs such as Blanchardstown (~9 km northwest) and Tallaght (~10 km southwest).
Bray, in County Wicklow, sits about 19 km southeast of O'Connell Bridge — inside a 25 km radius. The DART (Dublin's suburban rail) runs through the city centre out to Bray and Greystones.