Black Point-Green Point, California
Black Point-Green Point is a community of 1,655 people in Marin County, California.
Why visit Black Point-Green Point
Townapedia lists 2 museums and landmarks, 17 parks and trails and 3 attractions in and around town.
Highlights include Black Point Railroad Bridge, Columbia Pacific University, Hamilton Air Force Base and Marin Museum of Contemporary Art.
August is the warmest month, with average highs of 81°F; December lows average 42°F.
Weather in Black Point-Green Point
Forecast from the National Weather Service. Full forecast
About Black Point-Green Point
Black Point-Green Point is a census-designated place (CDP) in Marin County, California, United States. It is unincorporated, sitting between the city of Novato to the southwest and the Petaluma River and San Pablo Bay to the northeast. The population was 1,431 at the 2020 census.
From the Wikipedia article Black Point-Green Point, California (this version), under CC BY-SA 4.0.
Things to do3
Black Point Railroad Bridge
Bridge · 0.9 mi
Truss swing bridge across the Petaluma River, located in Black Point-Green Point, California
Columbia Pacific University
School · 2.8 mi
Former unaccredited nontraditional distance learning school in California (1978–2000)
Museums and landmarks2
Hamilton Air Force Base
Monument and historic site · National Register of Historic Places · 3.1 mi
Closed U.S. Army/Air Force base in Marin County, California
Marin Museum of Contemporary Art
Museum · 3.7 mi
Contemporary art museum in California, U.S.
Parks, trails and playgrounds17
5 more on the map.
Schools, colleges and libraries18
6 more on the map.
History
Black Point was part of the Rancho de Novato land grant. The 1880 History of Marin County by Alley, Bowen and Co. mentions "a man by name of Day" who "settled on an island in Novato township which has since borne his name" in 1851. This island is still known as Day Island. According to the book, several more settlers moved into the area in 1853. Some of them owned land there, while others were squatters, a problem common across the county. Lumber that came from Black Point was used to build part of the USS Saginaw, a steamer built at the Mare Island Naval Shipyard. It served in the navy until 1870, when it ran aground on a reef not far from Ocean island. Deer Island, a former island east of Olive Avenue, actually was an island in the early 1900s. The house on the island, owned by Antonio DeBorba, whose shop on Grant Avenue is still intact, was completely encompassed by water, and his house was only accessible by boat. When both the county and the state refused to build a levee, he spent a small fortune deepening the creek and taking water out of the marsh. Once that was done, he donated the land that is now Highway 37.
From the History section of Black Point-Green Point, California on Wikipedia, under CC BY-SA 4.0.
Map of Black Point-Green Point
40 places. The map loads OpenStreetMap tiles when you open it.
Climate by month
Monthly table
| Month | High | Low | Rain | Snow |
|---|---|---|---|---|
| Jan | 57°F | 43°F | 7.1 in | 0.0 in |
| Feb | 61°F | 44°F | 6.9 in | 0.0 in |
| Mar | 65°F | 46°F | 4.4 in | 0.0 in |
| Apr | 68°F | 48°F | 2.0 in | 0.0 in |
| May | 72°F | 51°F | 0.9 in | 0.0 in |
| Jun | 78°F | 54°F | 0.1 in | 0.0 in |
| Jul | 81°F | 55°F | 0.0 in | 0.0 in |
| Aug | 81°F | 56°F | 0.1 in | 0.0 in |
| Sep | 81°F | 54°F | 0.1 in | 0.0 in |
| Oct | 75°F | 51°F | 1.5 in | 0.0 in |
| Nov | 65°F | 46°F | 3.5 in | 0.0 in |
| Dec | 57°F | 42°F | 7.8 in | 0.0 in |
U.S. Climate Normals 1991-2020 for San Rafael Civic Ctr (8 mi away), NOAA NCEI.
People and cost of living
American Community Survey 5-year estimates, 2020-2024, U.S. Census Bureau. Estimates have margins of error, larger for small towns.
Disaster history
Marin County has had 12 federal disaster declarations since 2000, most often for severe storms.
- 2023-04-03: Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (Severe Storm)
- 2023-01-14: Severe Winter Storms, Flooding, Landslides, And Mudslides (Flood)
- 2023-01-09: Severe Winter Storms, Flooding, And Mudslides (Flood)
- 2020-03-22: Covid-19 Pandemic (Biological)
- 2020-03-13: Covid-19 (Biological)
- 2019-05-17: Severe Winter Storms, Flooding, Landslides, And Mudslides (Severe Storm)
OpenFEMA disaster declarations summaries.
Getting there and nearby towns
Gnoss Field (NOT) is the nearest airport with scheduled flights listed in OpenStreetMap, 3 miles away.
- Novato 2 mi southwest, about 4 min by car
- San Rafael 9 mi south, about 14 min by car
- San Anselmo 9 mi south, about 15 min by car
- Petaluma 11 mi northwest, about 17 min by car
- Larkspur 12 mi south, about 19 min by car
- Corte Madera 12 mi south, about 20 min by car
- Pinole 13 mi southeast, about 21 min by car
- Sonoma 13 mi north, about 21 min by car
- Vallejo 14 mi east, about 22 min by car
- Richmond 14 mi southeast, about 22 min by car
Drive times are estimates from straight-line distance, not routes.
Local news
Headlines from INDB, the NEMICO news database.
Reviews, tips and questions
Loading what members have shared...
Sources and licences
- NCES EDGE (Public domain): public schools
- NOAA NCEI U.S. Climate Normals 1991-2020 (Public domain): climate by month
- OpenFEMA (Public domain): disaster declarations
- OpenStreetMap contributors (ODbL 1.0): places, airports, map data
- U.S. Census Bureau (Public domain): population, income, housing, education, commute
- Wikidata (CC0 1.0): elevation, founding date, time zone, website, landmarks and historic places
- Wikimedia Commons (see each image): photos
- Wikipedia (CC BY-SA 4.0): overview and history text
Photo credits
- Marin Museum of Contemporary Art - February 2025 - Sarah Stierch 01, Missvain, CC0
- Black Point Railroad Bridge, AnonymousEditor95, CC BY-SA 4.0
Page built October 30, 2026. Spotted a mistake? Tell us or suggest a place.