Sonoma County Library
Official public library system associated with Sonoma County for browsing. Independent city library systems may also serve the county. Membership rules, branch service areas and every address in the county are not implied by this association.
Read this library system’s own card instructions. Online registration, physical-card activation, residence and youth requirements may differ; use the quoted local conditions below where provided.
Before you start · 5 requirements & conditions
- Information & documents · General card — applicant present; proof of address not required
- General Cards: If you don't already have a library card, now is the time to get one! Come to any Sonoma County Library location to sign up for a general library card. All applicants must be present to get a library card. Proof of address is not required. For more information, visit any Sonoma County Library branch or click here.
Source & saved evidence
SONOMA COUNTY LIBRARY · SONOMA COUNTY LIBRARY — library card instructions (opens in a new tab)
Official library card instructions — General card — applicant present; proof of address not required
General Cards: If you don't already have a library card, now is the time to get one! Come to any Sonoma County Library location to sign up for a general library card. All applicants must be present to get a library card. Proof of address is not required. For more information, visit any Sonoma County Library branch or click here.
Agent source review: October 26, 2026 · Snapshot
3a5f952443349040 - Eligibility & access · Limited-use adult visitor and youth cards
- Limited Use Cards: Limited Use Cards are available for adults who live out of state and are just visiting Sonoma County, or for youth under 18 without the approval of a parent/guardian. These cards allow the user to borrow up to 4 items at a time and use other library resources. Adults need to provide a photo ID when applying for this card.
Source & saved evidence
SONOMA COUNTY LIBRARY · SONOMA COUNTY LIBRARY — library card instructions (opens in a new tab)
Official library card instructions — Limited-use adult visitor and youth cards
Limited Use Cards: Limited Use Cards are available for adults who live out of state and are just visiting Sonoma County, or for youth under 18 without the approval of a parent/guardian. These cards allow the user to borrow up to 4 items at a time and use other library resources. Adults need to provide a photo ID when applying for this card.
Agent source review: October 26, 2026 · Snapshot
3a5f952443349040 - Eligibility & access · Sonoma-resident eCard temporary120days; branch conversion to general card
- eCards: eCards are temporary cards that can be created online by residents of Sonoma County. eCards can be used only for borrowing and using electronic resources. These cards automatically expire after 120 days. eCard users can convert their eCard to a general library card by visiting a library branch. Sign up for a library eCard.
Source & saved evidence
SONOMA COUNTY LIBRARY · SONOMA COUNTY LIBRARY — library card instructions (opens in a new tab)
SONOMA COUNTY LIBRARY — library card instructions — 06097 p3
eCards: eCards are temporary cards that can be created online by residents of Sonoma County. eCards can be used only for borrowing and using electronic resources. These cards automatically expire after 120 days. eCard users can convert their eCard to a general library card by visiting a library branch. Sign up for a library eCard.
Agent source review: October 26, 2026 · Snapshot
3a5f952443349040 - Information & documents · Adult photo ID
- Adults (18+) Must Provide a Photo ID
Source & saved evidence
SONOMA COUNTY LIBRARY · SONOMA COUNTY LIBRARY — library card instructions (opens in a new tab)
SONOMA COUNTY LIBRARY — library card instructions — 06097 p8
Adults (18+) Must Provide a Photo ID
Agent source review: October 26, 2026 · Snapshot
3a5f952443349040 - Information & documents · Under18 general card needs parent/guardian approval; limited category remains available
- Children/youth under age 18 need the approval of a parent or guardian. Library staff do not monitor or restrict minors’ use or borrowing of library materials.
Source & saved evidence
SONOMA COUNTY LIBRARY · SONOMA COUNTY LIBRARY — library card instructions (opens in a new tab)
SONOMA COUNTY LIBRARY — library card instructions — 06097 p12
Children/youth under age 18 need the approval of a parent or guardian. Library staff do not monitor or restrict minors’ use or borrowing of library materials.
Agent source review: October 26, 2026 · Snapshot
3a5f952443349040
Source & saved evidence
SONOMA COUNTY LIBRARY · SONOMA COUNTY LIBRARY — library services (opens in a new tab)
Official library services page — exact library-card instructions link
Get a Library Card
Agent source review: October 26, 2026 · Snapshot 4d0413265ab3a6b8