More historic than 25% of U.S. towns · #33 of 93 in Hawaii. What drives it
Its Register listing is the Waimalu Shopping Center. Most of Waimalu was built recently: 0.5% of its homes predate 1940 and the median home dates from 1976. Below: maps from 1954 on.
On its age, its old homes and the National Register, Waimalu is more historic than 25% of U.S. towns, #33 of 93 in Hawaii. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
C−
HistoryA character grade: shown, never part of Waimalu’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 Waimalu’s 0.8 sits near the middle of its state (63% of Hawaii towns have fewer) while its 1 listings outnumber those of 51% 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 (±0.4 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 Waimalu’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 Waimalu yet. The photos, dates and memories neighbors add here are how it gets written.
Waimalu (Hawaiian pronunciation: [vɐjˈmɐlu] , lit. 'sheltered water') is a census-designated place (CDP) in Honolulu County, Hawaiʻi, United States. The population was 13,817 at the 2020 census.
Its population held steady between the last two censuses: 13,730 in 2010, 13,817 in 2020.
Intro from Wikipedia. Population: U.S. Census Bureau.
By decade
No old photos in the archives yet
Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Be the first to add onePhotograph a print flat, in daylight, no flash.
Waimalu is more historic than 25% of U.S. towns, #33 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.
What is on the National Register in Waimalu?
One place: the Waimalu Shopping Center (listed 2021).
How old are the homes in Waimalu?
0.5% of Waimalu’s homes were built before 1940 (Census estimate), against a typical 1.7% for a Hawaii town; the median home was built in 1976.
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 the National Register of Historic Places (1), U.S. Geological Survey historical maps and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.