Seed Library Map
Illustrative photo: a raised bed with young lettuce and marigolds and a watering canIllustrative photo

Seed libraries in Contra Costa County, California

15 seed libraries are listed in Contra Costa County, California. 4 of them list at least one borrowing rule, such as whether you need a library card.

14 of the 15 listings are shown below so far; the others are added in stages.

Seed libraries

14

Sort: Featured Name

Filter: No card needed Self-serve Donations accepted

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Danville Seed Library

Danville, Contra Costa County, California

Hosted by Contra Costa County Library

Where to find it: “Multiple Contra Costa branches: Antioch, Bay Point, Brentwood, Concord, Crockett, Danville, El Cerrito and others”

  • No library card needed
  • Self-serve
  • Donations accepted
  • Return encouraged, not required
  • Pick up in person

How much: “Varies; Bay Point 3 packages per month, Antioch no limit”

Not listed: Season

Hercules Library Seed Library

Hercules, Contra Costa County, California

Hosted by Contra Costa County Library

Where to find it: “Multiple Contra Costa branches: Antioch, Bay Point, Brentwood, Concord, Crockett, Danville, El Cerrito and others”

  • No library card needed
  • Self-serve
  • Donations accepted
  • Return encouraged, not required
  • Pick up in person

How much: “Varies; Bay Point 3 packages per month, Antioch no limit”

Not listed: Season

Moraga Seed Library

Moraga, Contra Costa County, California

Hosted by Contra Costa County Library

Where to find it: “Multiple Contra Costa branches: Antioch, Bay Point, Brentwood, Concord, Crockett, Danville, El Cerrito and others (Moraga not visible in the text)”

  • No library card needed
  • Self-serve
  • Donations accepted
  • Return encouraged, not required
  • Pick up in person

How much: “Varies; Bay Point 3 packages per month, Antioch no limit”

Not listed: Season

Distances are straight-line, not driving or walking routes. Listings without a map position are shown last.

What the listings in Contra Costa County say

Counted from the 15 listings in Contra Costa County, California; 4 (27%) state at least one rule. Many don't say - we count only what is listed.

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Seed libraries in California

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Listings updated November 2026