Start from San Francisco centre
This map opens with an approximate reference point for San Francisco, United States. Move the marker or search a different address to change the center. The preselected radius is 5 mi. These coordinates are practical map starting points, not official cadastral, population-weighted or legal municipal centers.
What makes a radius in San Francisco different
The bay and coastal hills strongly influence practical travel. A short direct distance across water does not establish easy road access.
The calculation is a shortest-surface distance from the chosen center. It does not identify property boundaries, population totals, public transport reach or travel-time accessibility.
Example radius areas from this city center
The geometry of a radius is the same in every city. Local geography determines how much of the area is land, water or connected by roads. The reference table below compares geometric circle areas without claiming that all locations inside are accessible.
| Radius | Area (square miles) | Area (square km) |
|---|---|---|
| 2.5 mi | 19.63 | 50.85 |
| 5 mi | 78.54 | 203.42 |
| 10 mi | 314.16 | 813.67 |
| 15 mi | 706.86 | 1,830.75 |
Use cases for San Francisco
- Explore a 5 mi radius around San Francisco centre for an initial trade-area sketch.
- Compare a smaller inner ring with a larger service-area ring, then check actual travel conditions.
- Share a map with a colleague or export the shape for GIS review.
- Use the drive-time and walking tools for realistic route-network catchments when provider data is available.
How to create your own San Francisco radius
Adjust the radius field above; choose miles, kilometers, meters or feet as needed. Search an exact street or landmark when a specific center matters. Click Add circle to compare two zones, or download KML/GeoJSON to reuse the geometry.
Try three different map centers in San Francisco
Start with the city reference marker, then compare how a radius moves when its origin changes. Useful map-search starting points in San Francisco include Union Square, Mission District and Golden Gate Park. Search these places if geocoding is available, or zoom to a known point manually. These are suggested reference areas, not coordinates of verified addresses.
Use the same radius for each center to make the comparison meaningful. For example, select a 3-mile circle for all three sites, then test a wider 10-mile ring to see how much their straight-line coverage differs. For travel, traffic or pedestrian access, switch to the routing-specific tools rather than interpreting the circles as commuting times.
Geographic factors to notice around San Francisco
Local context matters. Around San Francisco, consider San Francisco Bay and steep city hills. A fixed-radius circle includes land and water indiscriminately; therefore the shaded area is not a count of accessible roads, buildings, residents or customers.
In practice, bridges, water and grade affect actual accessibility. Use the driving-time map when vehicle access matters, or the walking-radius map when you care about footpaths and crossings. Those modes need actual routing data; the circular map here is intentionally geometric.
Share a reproducible San Francisco radius comparison
First confirm the exact location you selected, then note the map coordinates, radius and measurement unit. Export KML or GeoJSON to preserve the boundary in a portable form. A colleague may also use the share-link control to reopen the center and selected distance.
Do not assume a screenshot contains every measurement setting or that a city label defines an official boundary. When working with property size, Census population, ZIP coverage or legal restrictions, the radius circle is only a reference layer. Read the published calculation methods and use the relevant tool rather than deriving unsupported values from the shaded area.
Accuracy and data notes
The starting point is a reference coordinate associated with San Francisco centre, rather than a verified official city centroid. Circle area includes water and inaccessible terrain. Results do not come from a traffic feed or population model. Read our methodology before using estimates in high-stakes decisions.
Other city and mapping tools
Explore the city radius directory, return to the global radius tool, or use the distance calculator for point-to-point measurement.