| Portneuf | |
| Settlement Type: | Regional county municipality |
| Coordinates: | 46.8833°N -126°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name2: | Capitale-Nationale |
| Established Title: | Effective |
| Established Date: | January 1, 1982 |
| Seat Type: | County seat |
| Seat: | Cap-Santé |
| Parts Type: | Municipalities |
| Parts Style: | coll |
| P1: | Cap-Santé |
| P2: | Saint-Raymond |
| P3: | Donnacona |
| P4: | Pont-Rouge |
| P5: | Neuville |
| P6: | Saint-Marc-des-Carrières |
| P7: | Deschambault-Grondines |
| P8: | Portneuf |
| P9: | Saint-Basile |
| P10: | Saint-Léonard |
| P11: | Lac-Sergent |
| P12: | Sainte-Christine-d'Auvergne |
| P13: | Rivière-à-Pierre |
| P14: | Saint-Gilbert |
| P15: | Saint-Alban |
| P16: | Saint-Casimir |
| P17: | Saint-Thuribe |
| P18: | Saint-Ubalde |
| Government Type: | Prefecture |
| Leader Title: | Prefect |
| Leader Name: | Denis Langlois |
| Area Total Km2: | 4,125.10 |
| Area Land Km2: | 3,923.70 |
| Population Footnotes: | [1] |
| Population Total: | 53,008 |
| Population As Of: | 2016 |
| Population Density Km2: | 13.5 |
| Population Blank1 Title: | Change 2011-2016 |
| Population Blank1: | 7.4% |
| Population Blank2 Title: | Dwellings |
| Population Blank2: | 26,586 |
| Timezone: | EST |
| Utc Offset: | −5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −4 |
| Postal Code Type: | Postal code(s) |
| Area Code: | 418 and 581 |
Portneuf (pronounced as /fr/) is a regional county municipality (RCM) in the Capitale-Nationale administrative region of Quebec, Canada. RCM of Portneuf has been established on January 1, 1982. It is composed of 21 municipalities: nine cities, seven municipalities, two parishes and three unorganized territories. The county seat is located in Cap-Santé.
The Regional County Municipality of Portneuf was constituted as a regional administrative entity on November 25, 1981, by a Provincial decree creating the supralocal Regional County Municipality administration based on the (...) and therefore replacing the previously existing historic Portneuf County Corporation. While the new administrative boundary included most of the communities from its previous historic limits, a few municipalities were merged with bordering entities: St-Augustin-de-Desmaures, Sainte-Catherine-de-Portneuf, Notre-Dame-de-Montauban, Quebec. Those municipalities yet remained within the Electoral Federal Riding of Portneuf District (all but Notre-Dame-de-Mautauban).
The administrative county seat remained in Cap-Santé while moving from the County Corporation building to a newly built one located further east on 185, Route 138 at a slight distance from the historic village of Cap-Santé.
There are 21 subdivisions within the RCM:
Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:[2]