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 on September 23, 2026.
Summit County, Colorado, has about 31,000 residents (2024 Census Bureau estimate), and arrests there are reported to the FBI by the Summit County Sheriff's Office and six 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 District Attorney files charges, a case in the Summit County District 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: Summit County public records, Colorado arrest records, Colorado inmate search and Colorado criminal records.
Who Makes Arrests in Summit County
The Summit County Sheriff's Office is the county agency that reports arrests to the FBI for Summit County. It reported 515 arrests for 2025.
The FBI lists five cities in Summit County with a reporting agency of their own, with the Census population and what each reported:
- Silverthorne, 5,220 residents: 157 arrests reported for 2025.
- Breckenridge, 4,892 residents: 198 arrests reported for 2025.
- Frisco, 2,732 residents: 193 arrests reported for 2025.
- Dillon, 1,013 residents: 44 arrests reported for 2020.
- Blue River, 836 residents: 16 arrests reported for 2025.
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 Summit County
Each agency reports its arrests to the FBI by month, and the FBI publishes them 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.
- Keystone: 1,185 for 2025, 1,186 for 2024, 1,183 for 2023, 1,186 for 2022, 1,187 for 2021 and 1,187 for 2020.
- Summit County Sheriff's Office: 515 for 2025, 452 for 2024, 545 for 2023, 581 for 2022, 506 for 2021 and 503 for 2020.
- Breckenridge: 198 for 2025, 173 for 2024, 187 for 2023, 318 for 2022, 227 for 2021 and 386 for 2020.
- Frisco: 193 for 2025, 231 for 2024, 283 for 2022 and 93 for 2020; 2021 and 2023 are missing months.
- Silverthorne: 157 for 2025, 121 for 2024, 116 for 2023, 84 for 2022, 96 for 2021 and 79 for 2020.
- Blue River: 16 for 2025, 26 for 2024, 13 for 2020 and 8 for 2019; 2021, 2022 and 2023 are missing months.
- Dillon: 44 for 2020 and 74 for 2019.
Together, the six agencies with all twelve months of 2025 on file reported 2,264 arrests that year. The same agencies with both 2025 and 2024 complete reported 2,264 in 2025 against 2,189 in 2024, up 3.4 percent.
Through August 2026, the six agencies with every month so far on file reported 1,445 arrests, against 1,511 in the same months of 2025.
Dillon reported only part of 2025 (11 months) and is left out of the totals.
Booking: Where People Arrested in Summit County Are Held
A person kept in custody after an arrest in Summit County is held at the county jail, whichever agency made the arrest, apart from the short stay some city departments' own holding cells allow; a person cited and released at the scene is not booked at all. The jail's record of each person held, with the charges, is a public record of the arrest, and the court file takes over from there.
On an average day in 2025 the jail held about 30 people, down from about 52 in 2019. Its rated capacity in 2025 was 93 beds, and it ran at 32 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
SearchSystems opened and checked the jail page of the Summit County Sheriff's Office at summitcountyco.gov/services/sheriff/divisions/detentions_division/i... (page title: Summit County, CO), which answered when SearchSystems opened it on September 23, 2026.
A sentence of more than a year is served in state prison; the Colorado Department of Corrections lists its inmates at cdoc.colorado.gov.
How to Find Out About an Arrest in Summit County
For Summit County the place to look is the case index of the Summit County District Court, which shows whether charges were filed and the next court date (the court records page SearchSystems verified is at coloradojudicial.gov/location/summit-county-justice-center, phone 970-453-2272).
Colorado is one of the states that lets anyone look up another person's statewide criminal history: the state runs an online name-based criminal history check open to the public, through the Colorado Bureau of Investigation. 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 Summit County
An arrest report belongs to the agency whose officer wrote it, and that agency releases it, not the court or the jail. Under the Colorado Open Records Act the agency must answer within 3 working days, extendable to 7 when there are extenuating circumstances, and it may charge research and retrieval time after the first hour, plus copying.
- An arrest by the Summit County Sheriff's Office: ask its records unit.
- An arrest in Silverthorne, Breckenridge, Frisco, Dillon or Blue River: the records unit of the agency that reports for that city; the city guides linked above name each city's records office.
- The court file of a case that was filed: the Summit County District Court, through the court records page at coloradojudicial.gov, phone 970-453-2272.
- Any county record that is not posted: the county records request page SearchSystems verified is at summitcountyco.gov (page title: Summit County, CO).
- Your own statewide record: a name-based or fingerprint-based request to the Colorado Bureau of Investigation.
Cities in Summit County: Who Reports the Arrests
The FBI lists a separate arrest reporting agency for five of the six cities in Summit County: Silverthorne, Breckenridge, Frisco, Dillon and Blue River. Montezuma has no separate reporting agency in the FBI's list. The FBI's list also carries the Keystone Police Department as a city agency in Summit County; Keystone is not among the cities above.
Wherever in the county the arrest happens, a person kept in custody goes to the county jail and the case goes to the Summit County District Court.
SearchSystems has a guide to the offices of these cities in Summit County, with the 2024 Census Bureau population; a city with its own arrest records guide opens there:
- Silverthorne (5,220)
Frequently Asked Questions
How many arrests are made in Summit County each year?
Keystone reported 1,185 arrests to the FBI for 2025, and the six agencies with every month of 2025 on file reported 2,264 between them.
How do I find out if someone is in jail in Summit County?
Ask the Summit County Sheriff's Office; its jail page SearchSystems verified is at summitcountyco.gov.
Where are people arrested in Summit County booked?
Those kept in custody go to the county jail, run by the Summit County Sheriff's Office; a person cited and released at the scene is not booked.
Are arrest records public in Summit County?
The court files of criminal cases are public, and so is the statewide criminal history kept by the Colorado Bureau of Investigation: the state runs an online name-based criminal history check open to the public. The arrest report itself is released by the agency that made the arrest, under the Colorado Open Records Act.
How do I get a copy of an arrest report in Summit County?
From the agency that made the arrest: the Summit County Sheriff's Office for its own arrests, or the agency that reports for the city where it happened. Under the Colorado Open Records Act the answer is due within 3 working days, extendable to 7 when there are extenuating circumstances; the county records request page SearchSystems verified is at summitcountyco.gov.
Is this the official Summit 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.