Regional Municipality of Ottawa–Carleton

Regional Municipality of Ottawa-Carleton
Dissolved Region
Municipal boundaries of the former Regional Municipality of Ottawa-Carleton.
CountryCanada
ProvinceOntario
RegionEastern Ontario
CreatedJanuary 1, 1969
DissolvedJanuary 1, 2001
Area
  Total
1,073 km2 (414 sq mi)
Population
 (1996)
  Total
721,136
Time zoneUTC−05:00 (EST)
  Summer (DST)UTC−04:00 (DST)
Area code613
SeatOttawa
MunicipalitiesOttawa, Cumberland, Gloucester, Goulbourn, Kanata, Nepean, Osgoode, Rideau, Rockcliffe Park, Vanier, West Carleton

The Regional Municipality of Ottawa–Carleton was a Regional Municipality and Census Division in Ontario, Canada, that existed between January 1, 1969, and January 1, 2001, and was primarily centred on the City of Ottawa. It was created in 1969 by restructuring Carleton County and annexing Cumberland Township from the United Counties of Prescott and Russell into the newly created Region of Ottawa–Carleton.

It was the second Regional Municipality to be created in Ontario after the Municipality of Metropolitan Toronto. It served as an upper-tier level of municipal government, aggregating municipal services on a region-wide basis like the Counties and Regional Municipalities of Southern Ontario, and was the only upper-tier municipal government ever created in Eastern Ontario. The Regional Municipality was dissolved upon the creation of the amalgamated City of Ottawa on January 1, 2001.