A tiger and a tulip, counted on the same line of the same government table. That sounds like a filing mistake. It isn't — and once you see the rule, a surprise near the top of the ranking suddenly makes sense.
The United States sorts every business into a numbered industry list, and the sorting question is what does this place actually do? One group is for places that preserve and exhibit objects of historical, cultural or educational value — that is the museum group. A different group is for places that preserve and exhibit live plant and animal displays. Zoos, aquariums, wild animal parks, aviaries, arboreta and botanical gardens all land in that second group together.
Basis: 2022 NAICS definitions (U.S. Census Bureau): 712110 Museums = establishments “primarily engaged in the preservation and exhibition of objects of historical, cultural, and/or educational value”; 712130 Zoos and Botanical Gardens = establishments “primarily engaged in the preservation and exhibition of live plant and animal life displays,” with aquariums, wild animal parks, arboreta, zoological gardens and aviaries listed as examples.
Now hold that thought and look at Hawaii, which sits somewhere no other state does. Hawaii's main islands are the only state land inside the tropics — south of the Tropic of Cancer, the line at about 23.4° north. Even Key West, the southern tip of the mainland United States, is north of it. Inside the tropics the midday sun passes directly overhead twice a year; nowhere else in the fifty states does that happen.
Basis: Geography: the tropics are the belt between the Tropic of Cancer (about 23.4° N) and the Tropic of Capricorn, defined as the zone where the sun can reach the zenith. Hawaii's main islands lie roughly between 19° N and 22° N, while the southernmost point of the continental United States, Key West, Florida, is near 24.5° N.
One more rule shapes the table, and it is easy to miss: this business count covers employers with paid staff, and it leaves out most government workplaces. A zoo or garden run by a city or a state is largely outside the count — so the ranking is not a list of every animal enclosure and flowerbed in America. It is a list of businesses.
Basis: U.S. Census Bureau, County Business Patterns (about the program): the data cover establishments with paid employees, and “CBP also excludes most establishments reporting government employees.”
Hawaii finishes ahead of several much bigger states in this count. Why? Two ideas pull at once: a climate where plants that need a heated glasshouse elsewhere can live outdoors all year, and millions of visitors arriving every year looking for exactly this kind of place. A count of business locations cannot separate the weather from the tourists, so treat both as ideas, not proof.
※ A hypothesis is an idea that isn't proven yet.
📊 Sources for the rankings mentioned in this note (links to the original data and retrieval dates) are on each quiz page below.