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California / Toxic Substances Control / Senior Librarian

Job-title file

Senior Librarian

Manage collections and information services and help patrons with research and access.

1 employees hold this title in Toxic Substances Control. Median total compensation for the role is $91,382, below the department median of $102,059.

Employees
1
Total payroll
$91.4K
Role median
$91,382
Agency median
$102,059
Comparison
Below

Compared with the local labor market

Senior Librarian pay vs. California

Across all employers in California, the median wage for Librarians and Media Collections Specialists — about 10,180 people — is $89,790. Toxic Substances Control pays a median base salary of $91,107 for this role, 1% above that figureabout the 52nd percentile of local pay for the occupation.

Where Toxic Substances Control sits in the local pay range

10th
25th
Median
75th
90th
$50,750
$66,540
$89,790
$108,800
$132,870
Toxic Substances Control median · $91,107

The bar is the range of annual wages for Librarians and Media Collections Specialists across every employer in California, from the 10th to the 90th percentile, with the middle 50% highlighted. The marker shows Toxic Substances Control’s median base salary for this role. Both figures are base pay only.

And across the country

Nationwide, the median wage for Librarians and Media Collections Specialists — about 133,790 people — is $68,270. Toxic Substances Control’s median base salary is 33% above that national figure, about the 80th percentile of pay for the occupation nationally.

10th
25th
Median
75th
90th
$43,660
$56,310
$68,270
$84,480
$103,990
Toxic Substances Control median · $91,107

Local and national wages differ for reasons beyond how well a job pays — cost of living, the mix of employers, and local demand for the occupation all move the California range relative to the national one.

Median total compensation for this role at Toxic Substances Control is $91,382, which includes overtime and employer-paid benefits. The benchmark above excludes both, so total compensation is deliberately not compared against it.

Benchmark: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (May 2025). BLS Occupational Employment and Wage Statistics (OEWS) covers all employers in the area — private, non-profit, and government alike — so this is a comparison against the whole local labor market for the occupation, not against private-sector pay. OEWS wages are straight-time pay and exclude overtime, shift differentials, and employer-paid benefits, so the government figure shown here is base pay on the same basis. Total compensation is not comparable to it. Job titles are matched to the closest standard occupation, so the comparison is between similar work rather than an identical job classification.

Compare departments

This role across California

Senior Librarian is held in 6 California departments. In Toxic Substances Control, the median of $91,382 ranks #4 of 6.

Highest-paying departments for this role

Median total compensation for the Senior Librarian role in other Californiadepartments (highest first). Each bar links to that department’s page for this role.

Compare jurisdictions

Senior Librarian beyond California

This role is reported in 2 jurisdictions. In California, the median of $91,407 ranks #2 of 2. See Senior Librarian across all of California

Highest-paying jurisdictions for this role

City of Los Angeles
$150,829 · 94

Median total compensation for comparable Senior Librarianroles in other jurisdictions. Titles are matched by normalized name across sources, not identical job classification, and pay is not cost-of-living adjusted. Each bar links to that jurisdiction’s page for the role.

Record list

Employees with this title

Page 1

Gwen Chen

Senior Librarian/Toxic Substances Control

2025 total comp
$91,382
Base pay
$91,107
Overtime
$0
Other pay
$275
Benefits
$0
Total compensation
$91,382
Employment type
Full-Time
Union / bargaining unit
R21
Work county
Alameda
Middle name
A

Source-specific fields

Base Pay
$7,823
Cs/csu
Cs
Position Number
8103402943011
Salary Total
$7,588
Total Pay
$91,382

Gwen Chen works as a Senior Librarian for Toxic Substances Control. Their status is full-time. Gwen earned $91,382 in 2025. Their bargaining unit is R21.