How Big Is Boulder?
Boulder covers approximately 70 square kilometers (27 square miles). It is a city in United States, located in Colorado. That's about 66% the size of Paris.
Boulder on the Map
Boulder's Geography
Boulder is a city in United States, in the state of Colorado. Drag it across the map above to see its footprint over any country, state, or city.
How Far Across Is Boulder?
Boulder stretches approximately 15 km (9 mi) from north to south, and 12 km (7 mi) from east to west.
Similar in Size
How Big Is Boulder Compared to Well-Known Places?
| Place | Area | vs Boulder |
|---|---|---|
| Boulder | 70 km² (27 sq mi) | — |
| Paris | 105 km² (41 sq mi) | 51% larger |
| San Francisco | 121 km² (47 sq mi) | 74% larger |
| Boston | 124 km² (48 sq mi) | 78% larger |
| Montreal | 432 km² (167 sq mi) | 6× larger |