It turns out Boston doesn’t just have a strong identity — it has a strong scent. A new study ranking America’s nicest-smelling cities placed Boston at the top of the list, edging out Washington D.C. and San Francisco to claim the title with a smell score of 9.64 out of 10.
The research, conducted by McLuck, built a composite “smell score” for cities across the country by measuring air quality and cleanliness alongside the per-capita density of sensory businesses: bakeries, florists, candle stores, and perfumeries. Boston performed in the top three across every single metric — and recorded the highest cleanliness score in the entire top ten, a 9.2 out of 10. Only Columbus, Ohio, scored higher on cleanliness in the full dataset (9.5).
Washington D.C. finished second with a score of 9.32, while San Francisco came in third at 9.23. San Francisco actually led the field in sheer volume of scented businesses — the most candle stores, bakeries, florists, and perfumeries of any city in the top ten — but its cleanliness score of 5.5 dragged it down the rankings. By comparison, Detroit, Los Angeles, and New York scored just 2.5, 3.2, and 4.3 respectively on the cleanliness metric, keeping them well outside the top ten overall.
The study draws on research into how “smellscapes” — the layered collection of odors that define a place — engage the brain’s pathways for emotion, memory, and spatial navigation. In other words, the way a city smells shapes how people experience and remember it.
Seattle, Philadelphia, Portland, Denver, Baltimore, Detroit, and Las Vegas rounded out the top ten. For Boston, though, the takeaway is straightforward: the next time someone describes the city as having character, science now has a very literal answer for why.
