Each edition grades its towns against each other only.
More historic than 16% of U.S. towns · #195 of 285 in Washington. What drives it
Most of Lake Cassidy was built recently: 4% of its homes predate 1940 and the median home dates from 1989. Below: maps from 1941 on.
More historic than 16% of U.S. towns, on its age, its old homes and the National Register.
On its age, its old homes and the National Register, Lake Cassidy is more historic than 16% of U.S. towns, #195 of 285 in Washington. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
Few Washington towns list much on the Register (a typical Washington town has 0.1 per 10,000 residents, the U.S. 2.4), so Lake Cassidy’s 0.0 sits below most of its state (27% of Washington towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
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 →
Read from the archive, the National Register and the record. The page puts what stands out first.
The first neighbors to add old photos shape how Lake Cassidy’s history is told.
Wikipedia doesn’t have a history of Lake Cassidy yet. The photos, dates and memories neighbors add here are how it gets written.
Lake Cassidy is a census-designated place (CDP) located in Snohomish County, Washington, United States. As of the 2020 census, Lake Cassidy had a population of 3,757.
Between the 2010 and 2020 censuses its population grew from 3,415 to 3,757 (+10%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Woven from the archive, old maps, post office records, the National Register and the people born here.
On the mapFirst mapped by the U.S. Geological SurveyWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Every edition of the U.S. Geological Survey’s map of Lake Cassidy. Tap a year, or press play to watch the town change.
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Lake Cassidy.
Nobody well known was born in Lake Cassidy itself, so here are the best known from just nearby.
Another post office, Getchell, opened and closed inside today’s town.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Each neighbor’s History grade, on the same three inputs.
Lake Cassidy is more historic than 16% of U.S. towns, #195 of 285 in Washington. 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.
4% of Lake Cassidy’s homes were built before 1940 (Census estimate, ±2.7 points), against a typical 4.3% for a Washington town; the median home was built in 1989.
What the archives can’t tell you, neighbors can.
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 U.S. Geological Survey historical maps, the US Post Offices dataset (Blevins & Helbock) 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.
