How many realtors are there in Thornhill?

We count 544 realtors on published brokerage rosters in Thornhill as of 2026-09-23. That figure comes from re-reading the brokerage directories themselves every week or two — not from an annual survey — so it moves when the market does.

How Thornhill's realtors split between brokerages

CENTURY 21 Heritage Group Ltd. Brokerage is the largest brokerage in Thornhill, with 224 of the 544 agents we track there (41.2%). The top three hold 88.4% between them.

The biggest brokerages in Thornhill

Full office-level ranking with shares: the Thornhill Brokerage Index. Need to reach these agents? The Thornhill realtor list is built from this same roster.

Province-wide: how many realtors are there in Ontario? Canada-wide: how many realtors are there in Canada?

How we count — and why it differs from CREA

CREA reported roughly 158,000 REALTOR® members nationally as of early 2026. That is a license count — everyone holding membership, whether or not they are actively attached to an office roster. We measure something different: agents actually published on brokerage office rosters across the national networks we track, re-read every week or two. Rosters exclude license-parkers and pick up new agents only when their office lists them, so our number runs lower and moves with every scan. Neither number is wrong; they answer different questions. If you are sizing a market, licensing tells you how many people could practice — rosters tell you who is actually on a team today.

Full method, including which networks we track and what we deliberately don't count: the Index methodology. Numbers on this page refresh with each scan; cite freely with a link.