Ontario public health units (09/2000) See also: http://alphaweb.org/phunit/ 2226 Algoma HU 2227 Brant County HU 2229 East York HU 2230 Durham Regional HU 2231 Elgin-St. Thomas HU 2232 Etobicoke City HU 2233 Bruce-Grey-Owen Sound HU 2234 Haldimand-Norfolk Regional HU 2235 Haliburton,Kawartha,Pine Ridge HU 2236 Halton Regional HU 2237 Hamilton-Wentworth Regional HU 2238 Hastings & Prince Edward HU 2239 Huron County HU 2240 Kent-Chatham HU 2241 Kingston,Frontenac & Lennox & Addington HU 2242 Sarnia-Lambton HU 2243 Leeds,Grenville-Lanark HU 2244 Middlesex-London HU 2245 Muskoka-Parry Sound HU 2246 Niagara Regional HU 2247 North Bay & District HU 2249 Northwestern HU 2250 North York HU 2251 Ottawa-Carleton Regional HU 2252 Oxford County HU 2253 Peel Regional HU 2254 Perth District HU 2255 Peterborough County-City HU 2256 Porcupine HU 2257 Renfrew County and District HU 2258 Eastern Ontario HU 2259 Scarborough HU 2260 Simcoe County HU 2261 Sudbury & District HU 2262 Thunder Bay District HU 2263 Timiskaming HU 2264 Toronto HU 2265 Waterloo HU 2266 Wellington-Dufferin HU 2268 Windsor-Essex County HU 2269 York HU 2270 York Regional HU 3895 Toronto HU .