Ann Arbor - I-94, M-14 and US 23
Lenght: 36.3 km
--- 2020 ----- 2010 ------ 2000 ------- 1990 ------------------- Growth ------------ Area -------- Density
123,892 ---- 114,008 ---- 114,638 ---- 110,324 --- +8.7% --- -0.5% --- +3.9% --- 73.5 Km² --- 1,685 inh./Km²
Well, Moscow got me lazy. I found a city whose borders match almost perfectly with its ring road: Ann Arbor. Some very tiny bits out and some enclaves in. I found an area encircled by the ring of 69.8 Km² on Google Maps whereas the city proper is at 73.5 Km².
Density is low which was expected for a small city in the US but it's experience a very healthy growth. The university there probably helps.
Now, let's back to work on the most difficult ones.
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