Larkspur URL: https://knowledge.ivjn.us/en/places/ca-larkspur.html Larkspur is a city in Marin County, California, United States. GeoNames lists a population of about 12,417[^geonames]. ## Overview Larkspur is a city in [Marin](https://knowledge.ivjn.us/en/places/ca-marin-county.html) County, California, United States. GeoNames lists a population of about 12,417[^geonames]. ## Geography - Coordinates: 37.9341, -122.5353 Updated: 2026-10-30 Tags: - Administrative division https://knowledge.ivjn.us/en/tags/admin-division.html Relations: - Located in: Marin County https://knowledge.ivjn.us/en/places/ca-marin-county.html Sources: - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip