Boulder County, Colorado Jail & Detention Facility Guide
Confirm the current jail or detention location through the responsible Boulder County agency before mailing, paying, visiting, calling, or traveling. This page combines county-specific geography, official-source routing, state corrections guidance, and transfer checks without inventing an unverified facility list.
Facility search: quick answer
Boulder County Jail snapshot
| Operator | Boulder County Sheriff's Office Jail Division |
|---|---|
| Published address or location context | 3200 Airport Road, Boulder, CO 80301 |
| Custody coverage | Current Boulder County Jail inmates plus the official current-day and next-24-hour release information available through the listing page |
| Search method | Official Daily Booking and Listing Reports with current-inmate name search, current-day release report, and a phone-assisted alternative |
| Release/history limitation | Older bookings require a Records Division request, and the county disclaims warranties about report accuracy or completeness; this is not DOC, federal, or final court data |
| Public phone | 303-441-4600 |
County profile for facility verification
The Census Bureau Vintage 2025 estimate for Boulder County is 328,560 residents, compared with 330,982 in 2020. The estimated change was −2,422 people (0.7%). It ranks #9 among 64 county equivalents in Colorado.
| Jurisdiction fact | Value | Facility-search relevance |
|---|---|---|
| Official Census name | Boulder County | Confirms the county-equivalent connected to the facility search |
| GEOID | 08013 | Distinguishes same-named counties and cities |
| County-equivalent type | County | Explains the jurisdiction model |
| 2025 resident population | 328,560 | Provides jurisdiction scale; it is not jail population or capacity |
| Adjacent jurisdictions | 5 | Supports nearby checks during regional or cross-county housing |
How to confirm the current facility
- Open the parent Boulder County inmate-search guide and identify the responsible sheriff, corrections department, detention center, regional jail, state agency, or other custodian.
- Use the verified custody method linked above.
- Confirm the exact facility name, booking or inmate number, current status, and jurisdiction.
- Open the official facility or agency page before sending mail, money, documents, or planning a visit.
- Reconfirm the location after court, medical transport, classification, contract placement, or transfer.
Why a jurisdiction can use more than one detention location
Local jail custody is normally handled by the responsible sheriff, county corrections department, detention center, regional jail, or another agency designated by the local government. State-prison and federal custody use separate systems. A jurisdiction may use an intake center, main jail, annex, work-release center, city jail, regional authority, juvenile facility, medical unit, courthouse holding area, or contracted beds. The public agency result or official information line is the best current source for where an adult is housed.
Facility details to verify
| Detail | Why it matters | Where to verify |
|---|---|---|
| Official facility name | Prevents confusion with an old, renamed, closed, or informal jail name | Responsible agency or current inmate result |
| Operating agency | Identifies the correct locator, phone, mail, money, and visitation rules | Sheriff, corrections, regional authority, state, or contracted public portal |
| Street and mailing address | Physical location and inmate-mail address can differ | Current official facility page |
| Public information phone | Confirms urgent transfer or release questions when published | Official contact page |
| Custody population served | A building may handle intake, pretrial, sentenced, work-release, medical, or another group | Agency facility description |
| Search relationship | Shows whether the county search covers the facility or another system must be used | Locator coverage statement |
Mail, money, visitation, and phone services
Do not use a facility address or vendor from an old third-party page. Open the current official sheriff, corrections, jail, regional authority, or facility page and confirm the recipient format, inmate number, permitted items, vendor, visitation approval process, schedule, identification requirements, and communication rules. Transfers can invalidate previously correct instructions.
When the facility shown online changes
A location can change after court, classification, sentence, disciplinary action, medical care, protective placement, overcrowding, regional placement, contract housing, state transfer, federal hold, or release processing. A changed location does not by itself explain the person’s legal status.
State and federal alternatives
If the person has entered state custody, use the Colorado state inmate-search guide. The state agency is Colorado Department of Corrections and the published state tool is CDOC Inmate Locator. If federal custody is confirmed, use the federal BOP guide.
Nearby county searches
Broomfield County inmate search
Colorado · GEOID 08014
Gilpin County inmate search
Colorado · GEOID 08047
Grand County inmate search
Colorado · GEOID 08049
Jefferson County inmate search
Colorado · GEOID 08059
Larimer County inmate search
Colorado · GEOID 08069
How this guide avoids stale facility data
The parent county has a verified official custody pathway, but current facility details still must be reconfirmed before action.