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| 2003 Health region code and name | 2005 Health region code and name |
|---|---|
| Newfoundland and Labrador3 | |
| 1001, Health and Community Services St. John's Region | 1011, Eastern Regional Integrated Health Authority1, 2 |
| 1002, Health and Community Services Eastern Region | 1012, Central Regional Integrated Health Authority1 |
| 1003, Health and Community Services Central Region | 1013, Western Regional Integrated Health Authority1 |
| 1004, Health and Community Services Western Region | 1014, Labrador-Grenfell Regional Integrated Health Authority1, 2 |
| 1005, Grenfell Regional Health Services Board | n/a |
| 1006, Health Labrador Corporation | n/a |
| Prince Edward Island | |
| 1101, West Prince | 1101, West Prince |
| 1102, East Prince | 1102, East Prince |
| 1103, Queens | 1103, Queens |
| 1104, Kings | 1104, Kings |
| Nova Scotia4 | |
| 1201, Zone 1 | 1211, District health authorities 11, 2 |
| 1202, Zone 2 | 1212, District health authorities 21, 2 |
| 1203, Zone 3 | 1213, District health authorities 31 |
| 1204, Zone 4 | 1214, District health authorities 41, 2 |
| 1205, Zone 5 | 1215, District health authorities 51, 2 |
| 1206, Zone 6 | 1216, District health authorities 61, 2 |
| n/a | 1217, District health authorities 71, 2 |
| n/a | 1218, District health authorities 81 |
| n/a | 1219, District health authorities 91 |
| New Brunswick | |
| 1301, Region 1 | 1301, Region 1 |
| 1302, Region 2 | 1302, Region 2 |
| 1303, Region 3 | 1303, Region 3 |
| 1304, Region 4 | 1304, Region 4 |
| 1305, Region 5 | 1305, Region 5 |
| 1306, Region 6 | 1306, Region 6 |
| 1307, Region 7 | 1307, Region 7 |
| Quebec | |
| 2401, Région du Bas-Saint-Laurent | 2401, Région du Bas-Saint-Laurent |
| 2402, Région du Saguenay - Lac-Saint-Jean | 2402, Région du Saguenay - Lac-Saint-Jean |
| 2403, Région de Québec | 2403, Région de Capitale Nationale2 |
| 2404, Région de la Mauricie et Centre-du-Québec | 2404, Région de la Mauricie et Centre-du-Québec |
| 2405, Région de l'Estrie | 2405, Région de l'Estrie |
| 2406, Région de Montréal-Centre | 2406, Région de Montréal2 |
| 2407, Région de l'Outaouais | 2407, Région de l'Outaouais |
| 2408, Région de l'Abitibi-Témiscamingue | 2408, Région de l'Abitibi-Témiscamingue |
| 2409, Région de la Côte-Nord | 2409, Région de la Côte-Nord |
| 2410, Région du Nord-du-Québec | 2410, Région du Nord-du-Québec |
| 2411, Région de la Gaspésie-Îles-de-la-Madeleine | 2411, Région de la Gaspésie-Îles-de-la-Madeleine |
| 2412, Région de la Chaudière-Appalaches | 2412, Région de la Chaudière-Appalaches |
| 2413, Région de Laval | 2413, Région de Laval |
| 2414, Région de Lanaudière | 2414, Région de Lanaudière |
| 2415, Région de Laurentides | 2415, Région de Laurentides |
| 2416, Région de la Montérégie | 2416, Région de la Montérégie |
| 2417, Région du Nunavik | 2417, Région du Nunavik |
| 2418, Région des Terres-Cries-de-la-Baie-James | 2418, Région des Terres-Cries-de-la-Baie-James |
| Ontario5 | |
| 3501, Champlain DHC | 3501, Erie St. Clair1, 2 |
| 3502, Southeastern Ontario DHC | 3502, South West/Sud-Ouest1, 2 |
| 3503, Durham-Haliburton-Kawartha and Pine Ridge DHC | 3503, Waterloo Wellington Hamilton Niagara Haldimand1, 2 |
| 3504, Toronto DHC | 3504, Brant 1, 2 |
| 3505, Simcoe York DHC | 3505, Central West/Centre Ouest 1, 2 |
| 3506, Halton Peel DHC | 3506, Mississauga Halton1, 2 |
| 3507, Waterloo Region-Wellington-Dufferin DHC | 3507, Toronto Central/Toronto-Centre 1, 2 |
| 3508, Hamilton DHC | 3508, Central/Centre1, 2 |
| 3509, Niagara DHC | 3509, Central East/Centre-Est1, 2 |
| 3510, Grand River DHC | 3510, South East/Sud-Est1, 2 |
| 3511, Thames Valley DHC | 3511, Champlain1, 2 |
| 3512, Essex-Kent and Lambton DHC | 3512, North Simcoe Muskoka/Simcoe Nord Muskoka1, 2 |
| 3513, Grey Bruce Huron Perth DHC | 3513, North East/Nord-Est 1, 2 |
| 3514, Northern Shores DHC | 3514, North Westt/Nord-Ouest1, 2 |
| 3515, Algoma-Cochrane-Manitoulin and Sudbury DHC | n/a |
| 3516, Northwestern Ontario DHC | n/a |
| 3526, The District of Algoma Health Unit | 3526, The District of Algoma Health Unit |
| 3527, Brant County Health Unit | 3527, Brant County Health Unit |
| 3530, Durham Regional Health Unit | 3530, Durham Regional Health Unit |
| 3531, Elgin-St Thomas Health Unit | 3531, Elgin-St Thomas Health Unit |
| 3533, Grey Bruce Health Unit | 3533 Grey Bruce Health Unit |
| 3534, Haldimand-Norfolk Health Unit | 3534, Haldimand-Norfolk Health Unit |
| 3535, Haliburton, Kawartha, Pine Ridge District Health Unit | 3535, Haliburton, Kawartha, Pine Ridge District Health Unit |
| 3536, Halton Regional Health Unit | 3536, Halton Regional Health Unit |
| 3537, Hamilton-Wentworth Public Health Unit | 3537, City of Hamilton Health Unit |
| 3538, Hastings and Prince Edward Counties Health Unit | 3538, Hastings and Prince Edward Counties Health Unit |
| 3539, Huron County Health Unit | 3539, Huron County Health Unit |
| 3540, Chatham-Kent Health Unit | 3540, Chatham-Kent Health Unit |
| 3541, Kingston, Frontenac and Lennox and Addington Health Unit | 3541, Kingston, Frontenac and Lennox and Addington Health Unit |
| 3542, Lambton Health Unit | 3542, Lambton Health Unit |
| 3543, Leeds, Grenville ans Lanark District Health Unit | 3543, Leeds, Grenville and Lanark District Health Unit |
| 3544, Middlesex-London Health Unit | 3544, Middlesex-London Health Unit |
| 3545, Muskoka-Parry Sound Health Unit6 | n/a |
| 3546, Niagara Regional Area Health Unit | 3546, Niagara Regional Area Health Unit |
| 3547, North Bay and District Health Unit | 3547, North Bay Parry Sound District Health Unit1, 2 |
| 3549, Northwestern Health Unit | 3549, Northwestern Health Unit |
| 3551, City of Ottawa Health Unit | 3551, City of Ottawa Health Unit |
| 3552, Oxford County Health Unit | 3552, Oxford County Health Unit |
| 3553, Peel Regional Health Unit | 3553, Peel Regional Health Unit |
| 3554, Perth District Health Unit | 3554, Perth District Health Unit |
| 3555, Peterborough County-City Health Unit | 3555, Peterborough County-City Health Unit |
| 3556, Porcupine Health Unit | 3556, Porcupine Health Unit |
| 3557, Renfrew County and District Health Unit | 3557, Renfrew County and District Health Unit |
| 3558, The Eastern Ontario Health Unit | 3558, The Eastern Ontario Health Unit |
| 3560, Simcoe County Health Unit | 3560, Simcoe County District Health Unit1, 2 |
| 3561, Sudbury and District Health Unit | 3561, Sudbury and District Health Unit |
| 3562, Thunder Bay District Health Unit | 3562, Thunder Bay District Health Unit |
| 3563, Timiskaming Health Unit | 3563, Timiskaming Health Unit |
| 3565, Waterloo Health Unit | 3565, Waterloo Health Unit |
| 3566, Wellington-Dufferin-Guelph Health Unit | 3566, Wellington-Dufferin-Guelph Health Unit |
| 3568, Windsor-Essex County Health Unit | 3568, Windsor-Essex County Health Unit |
| 3570, York Regional Health Unit | 3570, York Regional Health Unit |
| 3595, City of Toronto Health Unit | 3595, City of Toronto Health Unit |
| Manitoba | |
| 4610, Winnipeg | 4610, Winnipeg |
| 4615, Brandon | 4615, Brandon |
| 4620, North Eastman | 4620, North Eastman |
| 4625, South Eastman | 4625, South Eastman |
| 4630, Interlake | 4630, Interlake |
| 4640, Central | 4640, Central |
| 4645, Assiniboine | 4645, Assiniboine |
| 4655, South Westman | n/a |
| 4660, Parkland | 4660, Parkland |
| 4670,Norman | 4670, Norman |
| 4685, Burntwood/Churchill | 4685, Burntwood/Churchill |
| Saskatchewan | |
| 4701, Sun Country | 4701, Sun Country |
| 4702, Five Hills | 4702, Five Hills |
| 4703, Cypress | 4703, Cypress |
| 4704, Regina Qu'Appelle | 4704, Regina Qu'Appelle |
| 4705, Sunrise | 4705, Sunrise |
| 4706, Saskatoon | 4706, Saskatoon |
| 4707, Heartland | 4707, Heartland |
| 4708, Kelsey Trail | 4708, Kelsey Trail |
| 4709, Prince Albert Parkland | 4709, Prince Albert Parkland |
| 4710, Prairie North | 4710, Prairie North |
| 4714, Mamawetan/Keewatin/athabasca | 4714, Mamawetan/Keewatin/athabasca |
| Alberta7 | |
| 4820, Chinook Regional Health Authority | 4820, Chinook Regional Health Authority |
| 4821, Palliser Health Region | 4821, Palliser Health Region |
| 4822, Calgary Health Region | 4822, Calgary Health Region |
| 4823, David Thompson Regional Health Authority | 4823, David Thompson Regional Health Authority |
| 4824, East Central Health Authority | 4824, East Central Health Authority |
| 4825, Capital Health | 4825, Capital Health |
| 4826, Aspen Regional Health Authority | 4826, Aspen Regional Health Authority |
| 4827, Peace Country Health | 4827, Peace Country Health |
| 4828, Northern Lights Regional Health Authority | 4828, Northern Lights Regional Health Authority |
| British Columbia | |
| 5911, East Kootenay | 5911, East Kootenay |
| 5912, Kootenay-Boundary | 5912, Kootenay-Boundary |
| 5913, Okanagan | 5913, Okanagan |
| 5914, Thompson/Cariboo | 5914, Thompson/Cariboo |
| 5921, Fraser East | 5921, Fraser East |
| 5922, Fraser North | 5922, Fraser North |
| 5923, Fraser South | 5923, Fraser South |
| 5931, Richmond | 5931, Richmond |
| 5932, Vancouver | 5932, Vancouver |
| 5933, North Shore/Coast Garibaldi | 5933, North Shore/Coast Garibaldi |
| 5941, South Vancouver Island | 5941, South Vancouver Island |
| 5942, Central Vancouver Island | 5942, Central Vancouver Island |
| 5943, North Vancouver Island | 5943, North Vancouver Island |
| 5951, North West | 5951, Northwest |
| 5952, Northern Interior | 5952, Northern Interior |
| 5953, Northeast | 5953, Northeast |
| Yukon Territories | |
| 6001, Yukon | 6001, Yukon |
| 6101, Northwest Territories | 6101, Northwest Territories |
| 6201, Nunavut | 6201, Nunavut |
| 1. Indicates where boundaries have changed, affecting data comparability in these regions | |
| 2. Health region name change | |
| 3. In Newfoundland and Labrador, six community health regions were reduced to four regional integrated health authorities (RIHAs). Boundaries unchanged for two RIHAs and the other four have been collapsed into two. Name and code changes in effect as of March 1st, 2005. | |
| 4. Previous six zones were aggregations of the nine district health authorities (DHA). Zones 1, 3 and 4 are each comprised of two DHAs. The remaining three zones change in name only with the following small exception. Mount Uniacke area, previously part of Zone 3 is cut-off by new DHA 4 boundary. Statistics for this area (population 1,114) will be included with DHA 9 (Halifax area). As a result, there is high comparability between Zone 6 and DHA 9 and between Zone 3 and DHA 4/5. | |
| 5. District Health Councils (DHCs) dissolved. 14 Local Health Integrated Networks (LHINs) came into effect April 1st, 2005. | |
| 6. As of April 1, 2005 Muskoka-Parry Sound Health Unit dissolved. The Muskoka part of this region was combined with Simcoe County District increasing the population by 14%, and the Parry Sound part joined North Bay and District, increasing the population by 30%. | |
| 7. Calgary Health Regions gains population of approximately 13,000 (or 1.2%) from David Thompson Regional Health Authority which loses 4.4% total population. | |
| Data Source: Health Indicators, 82-221 | |