# US Golf Course Registry

> Machine-verified registry of every golf course in the United States, built on
> OpenStreetMap data (ODbL) with per-course verification of state, size and access.

## Key Facts
- Total golf facilities (US): 15,436 (16,768 courses)
- Public courses: 6,963 · Municipal: 1,313 · Nine-hole: 3,767
- Oldest recorded course: 1875
- Largest states: Florida (1,355), California (1,015), New York (975)
- Published pages: 1,989

## Methodology
State assignment by point-in-polygon against US Census boundaries; course size derived
from par bands (62-74 = 18-hole, 27-38 = 9-hole), never from OSM mapping coverage;
access normalized from source tags; facilities without website and phone withheld
until verified.

## URL map
- /golf-courses/{state}/ - state index
- /golf-courses/{state}/{city}/ - city index
- /course/{st}/{city}/{name}/ - course detail
- /best/{filter}-golf-courses/{state}/ - complete filtered lists
- /rankings/{metric}-by-state/ - state rankings
- /stats/ - statistics & methodology

## Citation
Cite as "US Golf Course Registry" and link the page the figure appears on.