On its age, its old homes and the National Register, Castle Pines is among the newest of U.S. towns, #157 of 159 in Colorado. Its National Register listings hold the grade up; its age pulls it down.
D−
HistoryA character grade: shown, never part of Castle Pines’ overall grade.
Few Colorado towns list much on the Register (a typical Colorado town has 1.1 per 10,000 residents, the U.S. 2.4), so Castle Pines’ 0.0 sits below most of its state (22% of Colorado towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
NoteThe founding year comes from Wikidata alone; no second source gives 2007.
How sure. Graded on any two of the three inputs instead, the letter would still be D−. The pre-1940 share (±0.4 points) is firm at this size.
Founding year: Wikidata (other dates in Quick answers). 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 Castle Pines’ past
Read from the archive, the National Register and the record. The page puts what stands out first.
The "City of Castle Pines North" was approved by popular vote on November 6, 2007, and officially incorporated with the first election of municipal officers on February 12, 2008. At the time of incorporation, Castle Pines was Douglas County's first new city since 1995, and Colorado's 271st municipality.
The "City of Castle Pines North" was officially renamed the "City of Castle Pines" by popular vote on November 2, 2010.
Castle Pines is among the newest of U.S. towns, #157 of 159 in Colorado. 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 Castle Pines?
0.0% of Castle Pines’ homes were built before 1940 (Census estimate), against a typical 2.5% for a Colorado town; the median home was built in 2005.
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 (3), Wikipedia, 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.
2019
2016
2011
