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Direct answer
For Ada County arrest records, use the Sheriff inmate roster for a custody check, use the Ada County Sheriff public-record process when you need an Ada County arrest-history or event record, and use Idaho iCourt for the separately maintained court case. Preserve the booking and case identifiers before comparing them.
Ada County Sheriff distinguishes live jail information from requested arrest-history records
The Ada County Sheriff inmate roster is built for jail status. It reports people housed in the county jail and notes that custody information changes, so it should be read as a dated snapshot rather than a permanent criminal-history record. When the research question is about an older Ada County booking or an arrest record maintained by the Sheriff, the public-record request process is the stronger route. The Sheriff explains that its public arrest-history scope is tied to people booked into the Ada County jail, which is narrower than a statewide criminal history.
Court proceedings are separate again. Idaho’s iCourt Portal is the state judicial search layer used to locate cases. Once a matching case appears, preserve the court, case number, and filing context before comparing it to the Sheriff booking. A release from jail, a roster disappearance, or a change in custody does not tell you how the case ended; the judicial record is the source for that question.
Choose the Ada County record by timeframe and purpose
| Research need | Source | Best anchor |
|---|---|---|
| Current jail status | Ada County Sheriff inmate roster | Name and roster lookup date |
| Ada County booking or arrest-history record | Sheriff public-record request | Booking/event details |
| Filed criminal case | Idaho iCourt Portal | Court and case number |
| Case outcome | Matching judicial case | Disposition or order entry |
Three Ada County cautions keep the trail accurate
Update
Roster data is time-sensitive
Recheck custody instead of assuming an older roster entry is still current.
Geography
County arrest history has a county boundary
Do not interpret an Ada-only record as a search of every Idaho agency.
Court
A booking charge can change after filing
Read the judicial case for the filed and disposed counts.
Verify an Ada County arrest in a source-first order
1
Check the jail layer if custody is the questionRecord the roster lookup date along with the identifying booking information.2
Use records requests for the historical Sheriff layerAsk for the specific Ada County record rather than treating the live roster as an archive.3
Open the Idaho court recordLocate the matching iCourt case using the county, name, and event timing.4
Keep the two identifiers in your notesDo not merge the booking reference and court case number into one field.