Contra Costa County librarian salary, 2025

63 people worked as librarians for Contra Costa County in 2025. Those who worked the full year earned an average of $97,428.

What is the average librarian salary at Contra Costa County?

Official pay range1

$75,965 to $111,726

from the lowest entry salary to the top of the highest librarian title

Average total pay, full-year librarians1

$97,428

average base pay $94,223

Based on the 53 of 63 librarians who worked the full year.

Most of Contra Costa County's librarians (52 of 63) hold the title Librarian II, with an official range of $83,561 to $101,569. Those who worked the full year earned an average of $96,013, within the range.

Median total pay
$99,403
the middle librarian: half earned more, half less
Overtime
$605
average per full-year librarian
Starting salary
$75,965
bottom of the Librarian I range
Average pay rank
87th
of 134 California employers

What does each librarian title at Contra Costa County pay?

Each bar is the official range for one title, lowest first. The dot marks the average total pay of full-year staff in that title, where at least 5 people stand behind it.1

  1. Librarian I$75,965 to $92,335 · fewer than 5 people
    Fewer than 5
  2. Librarian II$83,561 to $101,569 · 52 people
    $96,013
  3. Librarian III$91,917 to $111,726 · 7 people
    $115,084

official range average total pay, full year. "Fewer than 5" means too few full-year people in that title to show.

Library assistant pay at Contra Costa County

Counted on their own, kept out of the librarian figures on this page. Each group's name leads to its statewide overview. Range: the middle reported bottom and top of each group's official ranges. Pay: average total pay of full-year staff, overtime included.1

Library staffPeopleOfficial rangeAverage total pay
Librarians63$75,965 to $111,726$97,428
Library assistants67$58,977 to $75,316$71,789

Full-year library assistants averaged $71,789, $25,639 less than librarians.

Does Contra Costa County pay librarians more than other employers in Contra Costa County?

Average total pay of full-year librarians: Contra Costa County next to every employer in the county together, and the whole state.1

Full-year librarians at Contra Costa County earned $2,023 less than the Contra Costa County average and $10,604 less than the California average.

Average librarian pay in Contra Costa County compared to nearby counties

Average total pay of full-year librarians across all employers in each county that borders Contra Costa County, and how much more or less it pays.1

Contra Costa County Shades match the state map.

Where does Contra Costa County rank among California employers?

Every employer with at least 5 full-year librarians, by average total pay.1

All 134 California employers

Contra Costa County ranks 87th of 134, below the middle employer.

Contra Costa County
$100k$150k$200k

Middle employer: $104,744

Each bar counts the employers whose average total pay falls in a $5,000 band. The dashed line marks the middle employer.

Pension and health cover at Contra Costa County

As reported by the county. Contributions are what the employer paid per full-year librarian, on top of wages.1

Pension formula
2.5% at 67
the most common formula among Contra Costa County's librarians
Employer pension contribution
$19,885
average per year
Health, dental and vision
$15,541
average paid by the employer per year

Questions about librarian pay at Contra Costa County

What is the average librarian salary at Contra Costa County?

Librarians at Contra Costa County who worked the full year earned an average of $97,428 in 2025. The middle librarian earned $99,403: half earned more, half less. The official pay range across its librarian titles runs from $75,965 to $111,726.

How much overtime do librarians at Contra Costa County earn?

Full-year librarians were paid an average of $605 in overtime in 2025. The middle one was paid $0: a few people with a lot of overtime pull the average up.

What is the starting salary for a librarian at Contra Costa County?

$75,965 a year: the bottom of the official range for Contra Costa County's Librarian I title in 2025, as reported. Pay rises with steps and overtime; full-year librarians averaged $97,428 in total pay.

How much does a library assistant make at Contra Costa County?

Full-year library assistants at Contra Costa County averaged $71,789 in total pay in 2025, overtime included, on an official range of $58,977 to $75,316.

What pension do librarians at Contra Costa County get?

The most common pension formula among Contra Costa County's librarians is 2.5% at 67, as reported by the county. The employer paid an average of $19,885 a year into the pension plan.

More salaries in Contra Costa County

Sources for the Contra Costa County figures

Every person who held a librarian position at Contra Costa County at any point in 2025 counts toward the headcount. Pay figures use only people who worked roughly the full year: those whose regular pay reached at least 90% of the bottom of their official range. Total pay is gross wages before tax, including overtime, lump sums and other pay. Averages lead; the median total pay is the middle person's, with half above and half below, and is less pulled by a few people with very high pay. Every figure covers at least 5 people.

  1. State Controller's Office, Government Compensation in California, 2025: positions, official pay ranges, wages, pension formula and employer contributions as reported by Contra Costa County.

How we read the data