More historic than 4% of U.S. towns · #76 of 93 in Hawaii. What drives it
Most of Ewa Gentry was built recently: 0.0% of its homes predate 1940 and the median home dates from 1998. Below: maps from 1954 on and the census since 1990.
On its age, its old homes and the National Register, Ewa Gentry is more historic than 4% of U.S. towns, #76 of 93 in Hawaii. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
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HistoryA character grade: shown, never part of Ewa Gentry’s overall grade.
Few Hawaii towns list much on the Register (a typical Hawaii town has 0.0 per 10,000 residents, the U.S. 2.4), so Ewa Gentry’s 0.0 sits below most of its state (28% of Hawaii towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share (±0.3 points) is firm at this size.
Founding year: our sources. Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about Ewa Gentry’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Wikipedia doesn’t have a history of Ewa Gentry yet. The photos, dates and memories neighbors add here are how it gets written.
ʻEwa Gentry is a housing development and, as Ewa Gentry, a census-designated place (CDP) located in the ʻEwa District and the City & County of Honolulu on the leeward side of Oʻahu in Hawaiʻi about twelve miles (19 km) from Honolulu. As of the 2010 Census, the CDP had a total population of 22,690. This area is also known as just ʻEwa (in Hawaiian, ʻewa means "crooked"). In the late 19th century to early 20th century, ʻEwa was one of the large population centers on the Island of Oʻahu, with industry focused around sugar cane production. The ʻEwa Mill, in ʻEwa was a major employer that set up residential villages. Sugar cane is no longer grown on the ʻEwa Plain and ʻEwa Gentry is now part of …
Between the 2010 and 2020 censuses its population grew from 22,690 to 25,707 (+13%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Ewa Gentry is more historic than 4% of U.S. towns, #76 of 93 in Hawaii. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
How old are the homes in Ewa Gentry?
0.0% of Ewa Gentry’s homes were built before 1940 (Census estimate), against a typical 1.7% for a Hawaii town; the median home was built in 1998.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021).
From Wikimedia Commons (2), U.S. Geological Survey historical maps and U.S. Census counts (via Wikipedia). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
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