St. Rose’s post office opened in 1893, and 1 of its places is on the National Register
More historic than 26% of U.S. towns · #99 of 161 in Louisiana. What drives it
Most of St. Rose was built recently: 2% of its homes predate 1940 and the median home dates from 1988. Its Register listing is the LaBranche Plantation Dependency. Below: maps from 1891 on and the census since 1960.
The St. Rose post office opened in 1893, the earliest record of the town by name. Another post office, Elkinsville (1889), opened inside today’s town and later closed.
First census: 1,099 in 19602020 census: 7,504133 years
How historic is St. Rose?
C
More historic than 26% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first St. Rose post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives St. Rose’s History grade
On its age, its old homes and the National Register, St. Rose is more historic than 26% of U.S. towns, #99 of 161 in Louisiana. 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 St. Rose’s overall grade.
Louisiana towns list more on the Register than most of the country (a typical Louisiana town has 3.8 per 10,000 residents, the U.S. 2.4), so St. Rose’s 1.3 sits near the middle of its state (44% of Louisiana towns have fewer) while its 1 listings outnumber those of 51% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C− to C. The pre-1940 share (±2.0 points) is firm at this size. The founding year is the first post office, not a stated founding date.
Founding year: the first post office (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 St. Rose’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
The LaBranche Plantation Dependency House is located in St. Rose. It is a surviving building of the LaBranche Plantation. The main house was the plantation home built by the Zweig family in 1792. The plantation was based on the cultivation and processing of sugar cane and was dependent on slave labor. The big house was destroyed during the Civil War. One of the few buildings left on the property after the Civil War was the dependency house, also called a garçonnière (French for bachelor quarters). The property also has a preserved slave quarters building.
The St. Rose post office opened in 1893, the earliest record of the town by name (U.S. post office records).
How does St. Rose rank for history?
St. Rose is more historic than 26% of U.S. towns, #99 of 161 in Louisiana. 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 St. Rose?
One place: the LaBranche Plantation Dependency (listed 1984).
How old are the homes in St. Rose?
2% of St. Rose’s homes were built before 1940 (Census estimate, ±2.0 points), against a typical 3.4% for a Louisiana town; the median home was built in 1988.
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), 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.