The Norco post office opened in 1930, the earliest record of the town by name. Three smaller post offices, Sarpy (1886), Sellers (1894) and Good Hope (1922), opened inside today’s town and later closed.
First census: 4,682 in 19602020 census: 2,98496 years
How historic is Norco?
C−
More historic than 17% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Norco post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Norco’s History grade
On its age, its old homes and the National Register, Norco is more historic than 17% of U.S. towns, #117 of 161 in Louisiana. Its share of homes from before 1940 holds the grade up; its age pulls it down.
C−
HistoryA character grade: shown, never part of Norco’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 Norco’s 0.0 sits below most of its state (21% of Louisiana towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from D− to C. The pre-1940 share is a Census survey estimate (±6.3 points). 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 Norco’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
On January 8, 1811, planters were alarmed by the German Coast Uprising led by Charles Deslondes, a free person of color from Haiti (formerly the French colony of Saint-Domingue). It was the largest slave uprising in US history, though it resulted in few white fatalities. Deslondes and his followers had been influenced by the ideas of the French and Haitian revolutions. In 1809–1810, French-speaking refugees from the Haitian Revolution immigrated by the thousands to New Orleans and Louisiana: white planters and their slaves, and free people of color, adding to the French Creole, African and free people of color populations.
The Norco post office opened in 1930, the earliest record of the town by name (U.S. post office records).
How does Norco rank for history?
Norco is more historic than 17% of U.S. towns, #117 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.
How old are the homes in Norco?
11% of Norco’s homes were built before 1940 (Census estimate, ±6.3 points), against a typical 3.4% for a Louisiana town; the median home was built in 1960.
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, Wikidata and Wikipedia for famous people, 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.
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