The county was founded as the District of Colborne in 1838, centred around Peterborough. In 1862 The District was divided into Haliburton County, Peterborough County, and Victoria County (now the City of Kawartha Lakes). The centre of the County was originally the courthouse, which is still considered an important historical site.
The County has a population of about 125,000. The county seat is Peterborough.
The County consists of eight townships:
Asphodel-Norwood
Cavan-Millbrook-North Monaghan
Douro-Dummer
Galway-Cavendish-Harvey
Havelock-Belmont-Methuen
North Kawartha
Otonabee-South Monaghan
Smith-Ennismore-Lakefield
The City of Peterborough is within the Peterborough County census division, but is separated from the county's administration.
The County contains the Lang Pioneer Country, and the Kawarthas are a major tourist region.
Counties of Ontario: Bruce | Dufferin | Elgin | Essex | Frontenac | Grey | Haliburton | Hastings | Huron | Lambton | Lanark | Leeds and Grenville | Lennox and Addington | Middlesex | Northumberland | Perth | Peterborough | Prescott and Russell | Renfrew | Simcoe | Stormont, Dundas and Glengarry | Wellington
Regional Municipalities of Ontario: Durham | Halton | Muskoka | Niagara | Oxford | Peel | Waterloo | York
Single Tier Municipalities of Ontario: Brant | Brantford | Chatham-Kent | Greater Sudbury | Haldimand | Hamilton | Kawartha Lakes | Norfolk | Ottawa | Prince Edward | Toronto
The Soke of Peterborough is an area in England that is traditionally associated with the city of Peterborough, but considered part of Northamptonshire.
When county councils were created for the first time in 1888, in recognition of its special status, it became an independent administrative county.
In 1965 the administration was merged with that of the neighbouring small county of Huntingdonshire to form the slightly more viable administrative county of Peterborough and Huntingdonshire.