- 9Holes
- 36Par
- 5Rated tees
- 9Greens mapped
- 224Contours
- 49.9%Steepest slope
About York Downs
York Downs Golf and Country Club is a 9-hole golf course playing to par 36 in Unionville, Canada. Geoffrey Cornish, Bill Robinson, Thomas McBroom designed it, and it opened in 1970. GolfCore has mapped 9 greens here with contour lines and fall-line arrows. The card below lists 5 rated tees with yardages for all 9 holes. GPS yardages and scoring are free in the GolfCore app.
Plan your visit
4134 16th Ave, Unionville, ON L3R 0P1, Canada
+1 905-477-3105
How the greens break
GolfCore traced 9 greens at York Downs from Natural Resources Canada lidar, with 224 elevation contours at a 8-centimeter interval. The steepest measured slope is 49.9 percent, and the largest rise across a single green is 5.92 m.
In the app the same map sits under your ball on every green, with the fall line drawn to the hole and the wind modeled at your position. At clubs that run GolfCore, the pins the shop sets each morning show up there too.
Elevation: HRDEM Mosaic and LiDAR Point Clouds (CanElevation Series), Natural Resources Canada. Contains information licensed under the Open Government Licence – Canada. Processed by GolfCore.
The card
| Hole | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Out |
|---|---|---|---|---|---|---|---|---|---|---|
| Par | 4 | 5 | 4 | 3 | 4 | 4 | 5 | 3 | 4 | 36 |
| Yards | 361 | 484 | 353 | 168 | 389 | 366 | 461 | 146 | 313 | 3,041 |
| Hcp | 7 | 1 | 5 | 8 | 2 | 4 | 3 | 9 | 6 |
| Hole | Par | Yards | Hcp |
|---|---|---|---|
| 1 | 4 | 361 | 7 |
| 2 | 5 | 484 | 1 |
| 3 | 4 | 353 | 5 |
| 4 | 3 | 168 | 8 |
| 5 | 4 | 389 | 2 |
| 6 | 4 | 366 | 4 |
| 7 | 5 | 461 | 3 |
| 8 | 3 | 146 | 9 |
| 9 | 4 | 313 | 6 |
| Out | 36 | 3,041 |
Course rating and slope
| Tee | Yards | Par | Rating / Slope |
|---|---|---|---|
| black | 3,435 | 36 | 36.4 / 134 |
| Black | 3,430 | 36 | – |
| Blue | 3,219 | 36 | – |
| blue | 3,217 | 36 | 35.5 / 132 |
| white | 3,047 | 36 | 34.8 / 129 |
| White | 3,041 | 36 | – |
| Red | 2,917 | 36 | – |
| gold | 2,718 | 36 | 33.0 / 118 |
| Green | 2,661 | 36 | – |
| red | 2,626 | 36 | 33.8 / 126 |
Hole data is what GolfCore holds for the course's layout. Picking a tee shows that tee's own yardages, pars and stroke indexes where the club has rated them. Spot a wrong par, yardage or stroke index? Report it from Map Settings in the app, or send us a correction.
Course details
- Location
- Unionville, Canada
- Address
- 4134 16th Ave, Unionville, ON L3R 0P1, Canada
- Phone
- +1 905-477-3105
- Website
- yorkdowns.com
- Architect
- Geoffrey Cornish, Bill Robinson, Thomas McBroom
- Opened
- 1970
- Holes
- 9
- Par
- 36
- Tees on the card
- 10, 5 USGA-rated
- Greens mapped
- 9
- Elevation contours
- 224
- Contour interval
- 8-centimeter
- Largest green elevation span
- 5.92 m
- Steepest measured slope
- 49.9%
- Course map
- Traced hole by hole
- Wind modeling
- Live wind grid, 16 directions
- Tree canopy
- 1-meter canopy height model
- Course data updated
- 2026-09-23
More courses nearby
Straight-line distance from York Downs Golf and Country Club.
-
Angus Glen Golf ClubMarkham1.8 km straight-line
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-
Upper Unionville Golf ClubMarkham5.1 km straight-line
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- Markham Green Golf Club
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- Fairtree Golf Centre
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-
Markham Executive Golf CourseMarkham4.6 km straight-line
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-
Meadowbrook Golf & Country Club - ChampionshipGormley6.4 km straight-line
18 holes, par 71, scorecard, green maps
Staff at York Downs can claim this course by signing in with an email address at the club's own domain, then edit its address, phone, website and crest at no charge. Read how a club keeps its course right. The same system runs a club's tee sheet and caddie yard; read how caddie management on GolfCore works.