Can't find the place you want in the county you think it should be in?
Use the Township Index to see where twps were located in any given year.
If you are unsure of the County/District or Township you need, please use the Ontario Locator.

Keep in mind that census districts and sub-districts (townships) were voting districts and not actual “counties”. Although the census district may have the same name as a county, it may not include the same townships (subdistricts). How Canadian Census are Organized (pdf)
Years without a link indicate that no census records are available, or the records were enumerated as part of another county
	pre 1851	1851	1861	1871	1881	1891	1901	1911
Algoma District			ALG	ALG	ALG	ALG	ALG	ALG
Brant County	BRA	BRA	BRA	BRA	BRA	BRA	BRA	BRA
Bruce County		BRU	BRU	BRU	BRU	BRU	BRU	BRU
Carleton County	CAR	CAR	CAR	CAR	CAR	CAR	CAR	CAR
Dufferin County								DUF
Dundas County		DUN	DUN	DUN	DUN	DUN	DUN	DUN
Durham County	DUR	DUR	DUR	DUR	DUR	DUR	DUR	DUR
Elgin County	ELG	ELG	ELG	ELG	ELG	ELG	ELG	ELG
Essex County	ESS	ESS	ESS	ESS	ESS	ESS	ESS	ESS
Frontenac County	FRO	FRO	FRO	FRO	FRO	FRO	FRO	FRO
Glengarry County		GLE	GLE	GLE	GLE	GLE	GLE	GLE
Grenville County	GVL	GVL	GVL	GVL	GVL	GVL	GVL	GVL
Grey County		GRY	GRY	GRY	GRY	GRY	GRY	GRY
Haldimand County	HLD	HLD	HLD	HLD	HLD	HLD	HLD	HLD
Halton County	HTN	HTN	HTN	HTN	HTN	HTN	HTN	HTN
Hastings County		HAS	HAS	HAS	HAS	HAS	HAS	HAS
Huron County	HUR	HUR	HUR	HUR	HUR	HUR	HUR	HUR
Kent County		KEN	KEN	KEN	KEN	KEN	KEN	KEN
Lambton County		LAM	LAM	LAM	LAM	LAM	LAM	LAM
Lanark County	LNK	LNK	LNK	LNK	LNK	LNK	LNK	LNK
Leeds County	LEE	LEE	LEE	LEE	LEE	LEE	LEE	LEE
Lennox & Addington County		LnA	LnA	LnA	LnA	LnA	LnA	LnA
Lincoln County	LIN	LIN	LIN	LIN	LIN	LIN	LIN	LIN
Manitoulin District				MAN
Middlesex County	MID	MID	MID	MID	MID	MID	MID	MID
Muskoka District				MUS	MUS	MUS	MUS	MUS
Nipissing District			NIP	NIP		NIP	NIP	NIP
Norfolk County	NRF	NRF	NRF	NRF	NRF	NRF	NRF	NRF
Northumberland County	NUL	NUL	NUL	NUL	NUL	NUL	NUL	NUL
Ontario County		ONT	ONT	ONT	ONT	ONT	ONT	ONT
Oxford County		OXF	OXF	OXF	OXF	OXF	OXF	OXF
Parry Sound District				PSD				PSD
Peel County		PEE	PEE	PEE	PEE	PEE	PEE	PEE
Perth County	PER	PER	PER	PER	PER	PER	PER	PER
Peterborough County	PET	PET	PET	PET	PET	PET	PET	PET
Prescott County	PRE	PRE	PRE	PRE	PRE	PRE	PRE	PRE
Prince Edward County		PED	PED	PED	PED	PED	PED	PED
Renfrew County	REN	REN	REN	REN	REN	REN	REN	REN
Russell County	RUS	RUS	RUS	RUS	RUS	RUS	RUS	RUS
Simcoe County	SIM	SIM	SIM	SIM	SIM	SIM	SIM	SIM
Stormont County		STO	STO	STO	STO	STO	STO	STO
Thunder Bay & Rainy River								TBRR
Victoria County		VIC	VIC	VIC	VIC	VIC	VIC	VIC
Waterloo County	WAT	WAT	WAT	WAT	WAT	WAT	WAT	WAT
Welland County	WLD	WLD	WLD	WLD	WLD	WLD	WLD	WLD
Wellington County	WGT	WGT	WGT	WGT	WGT	WGT	WGT	WGT
Wentworth County	WTW	WTW	WTW	WTW	WTW	WTW	WTW	WTW
York County	YOR	YOR	YOR	YOR	YOR	YOR	YOR	YOR

Seeking Census Records for an area not listed above?

Addington County -- See Lennox & Addington Bathurst District -- See Lanark, Renfrew, Carleton Bothwell County* -- See Kent, Lambton Brock District -- See Oxford, Brant Cardwell County* -- See Dufferin, Peel, Simcoe, York Cochrane District -- See Algoma, Nipissing Colborne District -- See Peterborough Cornwall District -- See Stormont Dalhousie District -- See Carleton Dufferin County -- Prior to 1911 see Wellington, Grey, Simcoe Eastern District -- See Dundas, Glengarry, Prescott, Russell, Stormont Gore District -- See Halton, Haldimand, Lincoln Haliburton County -- See Peterborough, Victoria Home District -- See Durham, Simcoe, York Johnstown District -- See Leeds, Grenville, Carleton, Lanark, Renfrew Kenora District -- See Algoma, Thunder Bay & Rainy River London District -- See Middlesex, Elgin, Brant, Haldimand, Oxford Manitoulin District -- See Algoma Midland District -- See Lennox & Addington, Frontenac Monck County* -- See Haldimand, Lincoln, Welland Newcastle District -- See Durham, Northumberland, Victoria Niagara -- See Lincoln, Welland Ottawa District -- See Prescott, Russell Parry Sound -- Prior to 1911 see Muskoka Rainy River District -- Prior to 1911 see Algoma Sudbury District -- See Algoma, Nipissing Talbot District -- See Norfolk Temiskaming District -- See Nipissing Thunder Bay District -- Prior to 1911 see Algoma Western District -- See Essex, Kent, Lambton * Bothwell, Cardwell and Monck existed for census and election purposes only. For more on the history of any of these counties and districts, see OntarioGenWeb’s Research By Area pages.