Hawaii State Highway 78[?], the Moanalua Freeway, is an unsigned interstate H-201. An unconfirmed rumor suggests that the reason this interstate is unsigned is because the Hawaii Department of Transportation couldn't find an interstate sign that could accommodate the four characters "H201". (Even though the hyphen is technically in the name, HDOT doesn't put it on newer signs.)
... families residing in the village. The population density is 529.3/km² (1,369.6/mi²). There are 1,031 housing units at an average density of 178.5/km² ...