Where it came from
Columbus has never had a symbol of its own. Ask someone to draw the city and you get Ohio with a dot in the middle. That is a location, not an identity. Any town in the state could claim it.
What Columbus does have is a shape everyone here already knows: the loop. "Inside 270" is how people describe where they live. So we traced it. The mark is the real Columbus 270 loop, pulled from OpenStreetMap, with 70, 71, 670 and 315 inside it.
What does "inside 270" mean?
I-270 is the outerbelt around Columbus. "Inside 270" is shorthand for the city and the ring of neighborhoods the loop wraps: from Dublin around through Grove City, Reynoldsburg, Gahanna, Easton, New Albany, Westerville, back up through Worthington and down.
Why is the Columbus outerbelt that shape?
The bulge east toward the airport, the flat run across the north, the way 71 comes in on the diagonal from Grove City and leaves straight north through Worthington. None of it is smoothed into a circle. The moment you do that, it stops being the road.
The colors
Each road gets a color named for what it runs past. 70 is brick, for the neighborhoods it cuts through. 71 is Scioto teal, the river it crosses. 670 is olentangy blue for the way it slides north of downtown. 315 is barrel orange, which you'll understand if you have ever driven it in summer.
- I-270, limestone
- I-70, brick
- I-71, Scioto
- I-670, olentangy
- SR-315, barrel
No star, no state outline
The state outline puts a dot in the middle of Ohio and asks you to believe it means Columbus. A star is generic. Neither one is a picture of this city. The loop is.
Not the official symbol of Columbus. The one people chose.
Drawn from the map
The geometry is straight from OpenStreetMap contributors under the Open Database License. Because it is the actual road, we can never smooth it, symmetrize it or reproject it. That is the deal.