SearchSystems Editorial

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 24, 2026.

About this guide

Grant County, Washington, has about 105,000 residents (2024 Census Bureau estimate), and arrests there are reported to the FBI by the Grant County Sheriff's Office and eight city agencies. An arrest leaves the same records whoever makes it: the arresting agency's report, the record of anyone held at the county jail, and, if the Prosecuting Attorney files charges, a case in the Grant County Superior Court. This guide says who keeps each one, what it costs and who may see it, with the arrest counts each agency reported.

This guide covers who makes arrests, how many arrests, booking and the jail, finding an arrest, copies, cities and common questions.

Related guides: Grant County public records, Washington arrest records, Washington inmate search and Washington criminal records.

Who Makes Arrests in Grant County

The Grant County Sheriff's Office is the county agency that reports arrests to the FBI for Grant County. It reported 576 arrests for 2025.

Arrests inside eight of the county's cities are reported to the FBI by an agency of the city's own, listed here with the Census population and what each reported:

  • Moses Lake, 26,969 residents: 1,012 arrests reported for 2025.
  • Ephrata, 8,718 residents: 111 arrests reported for 2025.
  • Quincy, 8,294 residents: 159 arrests reported for 2024.
  • Mattawa, 3,784 residents: 115 arrests reported for 2020.
  • Warden, 2,806 residents: 55 arrests reported for 2024.
  • Royal City, 1,907 residents: 16 arrests reported for 2025.
  • Soap Lake, 1,780 residents: 63 arrests reported for 2024.
  • Grand Coulee, 960 residents: 12 arrests reported for 2024.

A city on that list is reported separately whether the officers are the city's own or the sheriff's under contract; the FBI's list does not say which.

How Many Arrests Each Agency Reports in Grant County

The FBI publishes every agency's monthly arrest counts on the Crime Data Explorer. These are the full-year totals, all offenses, as the FBI held them on October 8, 2026; a year with months missing or not reported is left out.

  • Moses Lake: 1,012 for 2025, 1,220 for 2024, 1,184 for 2023, 945 for 2022, 945 for 2021 and 837 for 2020.
  • Grant County Sheriff's Office: 576 for 2025, 545 for 2024, 371 for 2023, 371 for 2022, 306 for 2021 and 375 for 2020.
  • Quincy: 159 for 2024, 207 for 2023, 118 for 2022, 220 for 2021, 225 for 2020 and 257 for 2019.
  • Ephrata: 111 for 2025, 136 for 2024, 141 for 2023, 155 for 2022, 127 for 2021 and 155 for 2020.
  • Soap Lake: 63 for 2024, 59 for 2023, 94 for 2022, 69 for 2021, 104 for 2020 and 144 for 2019.
  • Warden: 55 for 2024, 82 for 2023 and 56 for 2022.
  • Royal City: 16 for 2025, 26 for 2024, 31 for 2023, 25 for 2022, 23 for 2021 and 40 for 2020.
  • Grand Coulee: 12 for 2024, 49 for 2023, 43 for 2022, 43 for 2021, 50 for 2020 and 43 for 2019.
  • Mattawa: 115 for 2020 and 127 for 2019.

Together, the eight agencies with all twelve months of 2024 on file reported 2,216 arrests that year. The seven of them with both 2024 and 2023 complete reported 1,671 in 2024 against 1,753 in 2023, down 4.7 percent.

Booking: Where People Arrested in Grant County Are Held

The county jail is where a person arrested in Grant County and kept in custody ends up, whichever agency made the arrest, though a city department may hold someone in its own cells first and a person cited and released at the scene is never booked. The jail's record of each person held, with the charges, is a public record of the arrest, and once the person is released or sentenced the record continues in the court file.

On an average day in 2021 the jail held about 96 people, down from about 190 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 185 beds, and it ran at 104 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.

SearchSystems opened and checked the custody page of the Grant County Sheriff's Office at grantcountywa.gov/1538/Jail-Inmate-Roster (page title: Jail Inmate Roster | Grant County, WA), which answered when SearchSystems opened it on September 23, 2026.

That page is the place to look for someone who was booked recently; a person cited and released at the scene, or held only a few hours by a city department, will not be on it.

A sentence of more than a year is served in state prison; the Washington State Department of Corrections lists its inmates at doc.wa.gov/records/incarcerated-data-search/incarcerated-search.

How to Find Out About an Arrest in Grant County

An arrest in Grant County can be traced in three places, depending on where the case stands: the custody page of the Grant County Sheriff's Office described above, for anyone booked into the county jail; the case index of the Grant County Superior Court, which shows whether charges were filed and the next court date (the court records page SearchSystems verified is at courts.wa.gov/court_dir/orgs/273.html, phone 509-754-2011); the Prosecuting Attorney, which decides whether an arrest becomes a charge (its page is at grantcountywa.gov/340/Prosecutor, phone 509-754-2017).

Statewide, Washington Courts Search Case Records is the Administrative Office of the Courts' free statewide case search.

Washington is one of the states that lets anyone look up another person's statewide criminal history: WATCH lets anyone search conviction records by name online, for $12 a search, through the Washington State Patrol. That record shows what agencies reported to the state, which is wider than one county's court index but can lag it.

Getting a Copy of an Arrest Record in Grant County

The report of an arrest is released by the agency that made it; the jail and the court hold their own records of the same event, but not the report. Under the Public Records Act (RCW 42.56) the agency must answer within 5 business days, and it may charge for copies at 15 cents a page, and set fees for electronic records.

  • An arrest by the Grant County Sheriff's Office: ask its records unit.
  • An arrest in Moses Lake, Ephrata, Quincy, Mattawa, Warden, Royal City or another of the cities listed above: the records unit of the agency that reports for that city; the city guides linked above name each city's records office.
  • A defendant who has been charged gets the report through the case: the Prosecuting Attorney, 509-754-2017, handles discovery for pending cases.
  • The court file of a case that was filed: the Grant County Superior Court, through the court records page at courts.wa.gov/court_dir/orgs/273.html, phone 509-754-2011.
  • Any county record that is not posted: the county records request page SearchSystems verified is at grantcountywa.gov (page title: Administrative Public Records Requests | Grant County, WA).
  • Your own statewide record: the same request described above, for your own name.

Cities in Grant County: Who Reports the Arrests

The FBI lists a separate arrest reporting agency for eight of the 14 cities in Grant County: Moses Lake, Ephrata, Quincy, Mattawa, Warden, Royal City, Soap Lake and Grand Coulee. George, Electric City, Coulee City, Wilson Creek, Hartline and Krupp have no separate reporting agency in the FBI's list.

Wherever in the county the arrest happens, a person kept in custody goes to the county jail and the case goes to the Grant County Superior Court.

SearchSystems has a guide to the offices of these cities in Grant County, with the 2024 Census Bureau population; a city with its own arrest records guide opens there:

Frequently Asked Questions

How many arrests are made in Grant County each year?

Moses Lake reported 1,012 arrests to the FBI for 2025. For 2024, the latest year most of the agencies in Grant County sent in full, the eight with every month on file reported 2,216 between them.

How do I find out if someone is in jail in Grant County?

Look on the custody page of the Grant County Sheriff's Office at grantcountywa.gov/1538/Jail-Inmate-Roster. It covers people booked into the county jail.

Where are people arrested in Grant County booked?

Those kept in custody go to the county jail, run by the Grant County Sheriff's Office; a person cited and released at the scene is not booked.

Are arrest records public in Grant County?

The court files of criminal cases are public, and so is the statewide criminal history kept by the Washington State Patrol: WATCH lets anyone search conviction records by name online, for $12. The arrest report itself is released by the agency that made the arrest, under the Public Records Act (RCW 42.56).

How do I get a copy of an arrest report in Grant County?

From the agency that made the arrest: the Grant County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the Public Records Act (RCW 42.56) the answer is due within 5 business days; the county records request page SearchSystems verified is at grantcountywa.gov.

Is this the official Grant County website?

No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.