Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 23, 2026 and September 28, 2026.
San Luis, Arizona, in Yuma County, has about 40,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in San Luis is held at the county jail, run by the Yuma County Sheriff's Office, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, the jail, who books people, state prison and common questions.
Related guides: San Luis public records, Yuma County inmate search, San Luis arrest records, San Luis warrants, San Luis criminal records, San Luis court records, Arizona arrest records and Arizona inmate search.
Finding Someone in Custody in San Luis
The county jail, run by the Yuma County Sheriff's Office, holds everyone kept in custody after an arrest in San Luis, from every agency.
SearchSystems opened and checked the jail page of the Yuma County Sheriff's Office at azdps.gov/leosa/1886 (page title: Yuma County Sheriff's Office | Department of Public Safety), phone (928) 783-4427, 141 South 3rd Avenue Yuma, AZ 85364, which answered when SearchSystems opened it on September 28, 2026.
That page is the office's jail information page rather than a roster, so a search for a particular person goes through the office at (928) 783-4427.
The Yuma County Jail by the Numbers
On an average day in 2021 the jail held about 460 people, down from about 480 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 756 beds, and it ran at 63 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Yuma County has about 220,000 residents (2024 Census Bureau estimate), so the jail holds about 21 people for every 10,000 residents.
Who Books People Into the Yuma County Jail
The Yuma County Sheriff's Office and the agency that reports for San Luis (filed by the FBI as San Luis Police Department) make the arrests that end in a booking in and around San Luis.
The FBI's agency list also places one more agency in Yuma County: Arizona Western College (campus police).
The largest arrest counts reported to the FBI were Yuma's 2,636 for 2025, the Yuma County Sheriff's Office's 838 for 2025 and San Luis's 370 for 2025.
Together, the five agencies in Yuma County with all twelve months of 2025 on file reported 3,982 arrests to the FBI that year. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in San Luis arrest records.
From the Jail to State Prison
A sentence of more than a year is served in state prison, not the jail; the Arizona Department of Corrections, Rehabilitation and Reentry lists its inmates at corrections.az.gov/inmate-data-search.
Frequently Asked Questions
How do I find an inmate in San Luis?
Ask the Yuma County Sheriff's Office at (928) 783-4427; its jail page SearchSystems verified is at azdps.gov/leosa/1886.
How many people are in the Yuma County jail?
About 460 on an average day in 2021, the latest year in the Vera Institute's jail data, against a rated capacity of 756 beds.
What is the phone number for the Yuma County jail?
(928) 783-4427, the number on the page of the Yuma County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Yuma County go?
To a facility of the Arizona Department of Corrections, Rehabilitation and Reentry; its inmate locator is at corrections.az.gov/inmate-data-search.
Is this the official San Luis website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.