Larkspur’s post office opened in 1871, and 13% of its homes were built before 1940
1 place in town is on the National Register, among them a historic district with 7 buildings. Below: 1 old photo or paper, maps from 1954 on, and the census since 1980.
According to William Bright, the town was named for the plains larkspur (Delphinium geyeri).
A post office called Larkspur has been in operation since 1871. The community was named for the abundance of larkspur near the original town site.
Larkspur is also the site of the historic headquarters building of Universal Co-Masonry According to the town's website, Larkspur's Vision Statement is "Larkspur, a small friendly town in Colorado. A town that works together by: Fostering a Government of Integrity that Responds to its People, Directing Future Growth within Larkspur´s Small Town Values, Providing Community Facilities and Activities for All Ages, and Preserving the Natural Environment that is Unique to the Larkspur Area."
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
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). How TownRatings grades history →
From Wikimedia Commons (9), the Library of Congress (3), the National Register of Historic Places (1), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), 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.