Climate
Seoul logs 97 frost days a year to Ulsan's 50 — Ulsan wins by 47. Ulsan also leads on hot days by 6.
Seoul
Feels-like °C
Dinner outside
Ulsan
Feels-like °C
Dinner outside
Cost of Living
Seoul averages $1,853/mo for balanced living; Ulsan has no cost baseline yet.
Seoul
$1,853monthly · balanced
Mobility
Seoul scores 4.6 on mobility (0–5 scale); Ulsan has no mobility baseline.
Culture
Seoul's culture score of 3.1 sits well above Ulsan's 0.0.
Nature & Outdoors
Seoul scores 4.3 on nature & outdoors (0–5 scale); Ulsan has no nature & outdoors baseline.
Safety
Seoul scores 4.1 on safety (0–5 scale); Ulsan has no safety baseline.
Career
Seoul scores 4.3 on career (0–5 scale); Ulsan has no career baseline.
Social & Community
Seoul scores 2.8 on social & community (0–5 scale); Ulsan has no social & community baseline.
Food & Dining
Seoul scores 4.0 on food & dining (0–5 scale); Ulsan has no food & dining baseline.
Family
Seoul scores 4.1 on family (0–5 scale); Ulsan has no family baseline.
Healthcare
Seoul scores 4.1 on healthcare (0–5 scale); Ulsan has no healthcare baseline.
Air Quality
Seoul averages 26.6 µg/m³ (unhealthy) PM2.5 annually versus Ulsan's 21.1 µg/m³ (sensitive-groups) — Ulsan breathes ~21% cleaner air (5.5 µg/m³ lower).
Seoul
Ulsan
PM2.5 annual average
WHO classification
City Scale
Both maps at the same real-world scale — 1 cm on either map is the same distance.
Seoul (22.3M) and Ulsan (888K) are 25x in population — Seoul is the larger metro, Ulsan the smaller; on land area Seoul spans roughly 11x more ground.
Seoul is roughly 17x the scale of Ulsan
Combined population & area comparison
City Scale Rankings
Seoul
Ulsan
Who Thrives Here
Seoul favours the big city energy, while Ulsan suits the clean air seeker. Both cities work well for the winter escapist.
Also compared
Frequently asked about Seoul vs Ulsan
▶Which is cheaper, Seoul or Ulsan?
▶How does the climate compare between Seoul and Ulsan?
▶Is Seoul or Ulsan safer?
▶Should I move to Seoul or Ulsan?
The best city depends on what matters to you
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