York Region School Boundary Map: Finding Your Child's School

The short answer

• Every address in York Region, including Markham, sits inside both a YRDSB zone and a YCDSB zone at the same time, because the two boards operate independently.
• Boundaries are based on a school’s physical capacity and long-term enrolment projections, not on neighbourhood names, so they shift as communities grow.
• YRDSB reviews its attendance areas annually under its Boundary Review Process and YCDSB can adjust lines too, so a map that is even a year or two old may not be current.
• Use each board’s official locator tool, not a real estate listing or a general internet map, to confirm a specific school.
• Being inside a boundary gets your child into that school, but it does not automatically guarantee busing and it does not guarantee a spot at a different school you’d prefer.

Why one Markham address has two school zones

This is the thing that trips up a lot of buyers moving to York Region, especially from areas where there is only one public board to think about. York Region actually has two publicly funded English boards running in parallel: YRDSB and YCDSB. Neither one answers to the other and neither one’s boundaries line up with the other’s.

So when you look at a property in Markham, you are really asking two separate questions. Which YRDSB school is this address zoned for and which YCDSB school is this address zoned for. A family that wants the public system only needs the first answer. A Catholic family needs the second. Some families genuinely want to compare both before deciding where to buy.

This is also why relying on a single “york region school zone map” pulled from a blog or a neighbourhood group is risky. Most of what circulates online shows one board’s lines or an outdated version of them and presents it as if it covers the whole picture.

Which school board is Markham in

Markham is served by both boards across its full geographic area. There is no part of Markham that belongs to only one system. The practical answer to “which school board is Markham” is: both and your specific address determines the designated school within each one separately.

How school boundaries are actually determined

Boundaries exist mainly to manage capacity. YRDSB describes its attendance areas as necessary “to create school communities that are appropriately sized for the capacity of each school facility and to accommodate sustainable student enrolment.” In plain terms, a school building can only hold so many students and the boundary line is drawn to keep enrolment inside that limit over the long term, not just for this year.

That has a few practical effects worth knowing before you buy:

• Portables are common in fast-growing communities, used while a neighbourhood is at peak enrolment or while a new school or addition is being built.
• New residents in rapidly growing areas may be temporarily assigned to a school other than the one normally designated for their community, until capacity catches up.
• YRDSB’s Board Policy 108 sets out the circumstances and process for changing attendance areas and the board’s Boundary Review Process ensures these lines are reviewed every year.

YCDSB works on a similar principle: addresses are matched to a designated school and the board maintains boundary maps and a locator tool so families and real estate professionals can check the current assignment rather than assume it from memory or an old PDF.

Finding the york region district school board boundaries for a specific address

For YRDSB, the board’s own school boundaries page is the starting point. It does not publish one static downloadable map for the whole region; instead it points families to check boundary status for their specific school or community and explicitly recommends that new or prospective residents confirm directly with the local school where their children will actually attend classes.

That instruction matters more than it sounds. Boundaries shift, new schools open and a community that was zoned one way two years ago can be zoned differently today. If you’re relying on a map saved from a previous search or one shared in a Facebook group, treat it as a starting point for discussion, not a confirmed answer.

Finding the york region catholic school boundary map for a specific address

YCDSB lists its schools with individual boundary maps attached to each one, for example separate English-track and French Immersion boundary documents for a given elementary school. Secondary schools can carry their own program-specific boundaries too, such as PACE at Father Bressani Catholic High School.

A guide circulated for YCDSB families puts the process plainly: use the board’s official School Locator, select the correct school year, enter the full address and confirm whether you’re viewing the English-track, French Immersion, PACE or secondary boundary, since an address can sit in more than one of those overlapping lines depending on the program. The same guide is blunt that “real-estate listings, neighbourhood discussions and third-party school maps are not authoritative” when a school assignment is going to affect a purchase or lease decision.

If you want to attend a school other than your designated one, that’s a separate request, not an automatic option. For YCDSB secondary registration, families currently use Form TCH19A submitted to the preferred school and the board is explicit that approval is required and not guaranteed. Elementary families should check the current procedure directly with their designated school rather than assume the secondary process applies.

Comparing the two systems at a glance

Question	YRDSB (public)	YCDSB (Catholic)
Who it serves	Open to any family, no faith requirement	Primarily serves Catholic families; admission can involve faith documentation
How boundaries are set	Based on school capacity and long-term enrolment, reviewed annually under Policy 108	Based on designated attendance areas per school, separate maps for English, French Immersion and some secondary programs
Where to check an address	YRDSB’s school boundaries page and direct contact with the local school	YCDSB’s official School Locator tool
Out-of-boundary requests	Governed by Policy 108, decided case by case	Requires a separate request (Form TCH19A at secondary level); approval not guaranteed
Transportation	Tied to distance rules, separate from boundary eligibility	Tied to distance rules and program; regional programs may have their own service area

Is Myers Park High School a magnet school

Most secondary schools in York Region, including large schools serving Markham families, are standard catchment schools: your home address determines which one your child is assigned to, full stop. Myers Park Public School and the secondary schools feeding from it function this way too, as catchment assignments rather than audition-based magnet programs. Where a true specialized stream exists, such as French Immersion, International Baccalaureate or a program like PACE at certain YCDSB secondary schools, that program typically carries its own separate boundary or application layer on top of the regular catchment, so it’s worth checking the specific school’s page for whether a program boundary applies in addition to the general one.

What this means when you’re buying or renting in Markham

If the school a family will attend is part of your decision, build the boundary check into your house hunting the same way you’d check a survey or a property tax estimate. Confirm it before you write an offer, not after you’ve already fallen for a specific street.

A few practical habits that save headaches later:

• Check both boards separately, even if you’re confident you only want one system, since plans change and resale value can depend on both.
• Re-check the locator tool close to your actual move date, not just when you start looking, since boundaries can be adjusted mid-search in a fast-growing area.
• Call the specific school directly if a property sits near a visible boundary line on any map, since a few hundred metres can put you on the other side of it.
• Don’t assume a program (French Immersion, IB, PACE) follows the same boundary as the regular English-track school; verify it separately.

What to do next

Pull the exact address of any property you’re seriously considering and run it through YRDSB’s boundary information and YCDSB’s School Locator separately. Write down both designated schools, not just the one you think you’ll use. If a program like French Immersion or IB matters to your family, confirm that program’s specific boundary too, since it can differ from the general catchment. Then call the schools directly to confirm, especially if you’re buying in a newer or fast-growing part of Markham where boundaries are more likely to be reviewed or adjusted.

If you’re house hunting in Markham or anywhere else in York Region and want help thinking through how school boundaries line up with specific streets and neighbourhoods, reach out to me, Kirby Chan. I’ll walk you through what I know and point you to the right board contacts so you can confirm the rest yourself.