Hamilton County Jail Overview
Hamilton County Jail is operated by the Hamilton County Sheriff's Office. It opened in October 2004 and serves as the confirmed detention facility for Hamilton County. The jail holds adult men and women, including pretrial county detainees, local sentenced prisoners, and people held for Hamilton County or another agency when the jail accepts that hold. The county page says the jail may hold prisoners for Hamilton County, the U.S. Marshals Service, the Federal Bureau of Prisons, the State of Iowa, and surrounding counties as needed.
The jail is a small facility, not a multi-building detention complex. The 2025 PREA audit identifies six inmate housing units and minimum, medium, and maximum custody levels. It also states that youthful inmates are not held there. Juvenile matters should not be treated as if they appear on a public Hamilton County Jail roster.
The official jail page is the best local source for current family-service rules.
The page gives the jail phone, capacity, visitation, commissary, and phone/video details used throughout this facility record.
Hamilton County Jail Capacity
The county jail page and 2025 PREA audit both support a 44-prisoner facility capacity. The 2025 audit reported a current population of 9 in its front matter, 12 people on onsite review day one, and a 12-month average daily population of 14. The audit also said Hamilton County Jail was not over capacity at any time in the prior 12 months.
| Measure | Figure | Source |
|---|---|---|
| Facility capacity | 44 prisoners | County jail page and 2025 PREA audit |
| Current population | 9 | 2025 PREA audit front matter |
| Onsite day-one count | 12 | 2025 PREA audit |
| Average daily population | 14 | 2025 PREA audit lookback |
| Over capacity | No | 2025 PREA audit |
Who Hamilton County Jail Holds
Hamilton County Jail can hold adults arrested by the Sheriff's Office, Webster City Police, Iowa State Patrol, another local agency, or an outside agency with authority. The sheriff provides law enforcement in unincorporated Hamilton County and, by contract, Blairsburg, Williams, Jewell, Ellsworth, Randall, Stanhope, Stratford, and Kamrar. A person arrested in those towns may therefore be routed to Hamilton County Jail rather than a separate town lockup.
Holds can be local or nonlocal. A U.S. Marshals hold, BOP hold, state hold, or neighboring-county hold does not turn Hamilton County Jail into a federal prison or state prison. It means the person may be physically housed in the county jail while another system controls the case or transfer. For sentenced state-prison custody, search Iowa DOC. For federal sentenced custody, search BOP. For immigration detention, search ICE.
Custody flow: Arrest or court order > Hamilton County Jail booking > first appearance or hold review > release, local sentence, transfer, or state/federal custody.
Look Up Hamilton County Jail Inmates
No official Hamilton County public web jail roster was confirmed on the county sheriff or jail pages. The official Hamilton County Sheriff IA app listings on Apple and Google Play advertise an inmate-search feature, but the in-app fields and sample records were not inspectable from public web sources. Use the app as the first official digital route, then call the jail when a result is unclear or missing.
- Open the Hamilton County Sheriff IA mobile app and check the inmate-search feature.
- Have the person's full legal name, spelling variants, date of birth or age, and approximate arrest date ready.
- Call Hamilton County Jail at 515-832-8629 if the app does not confirm current custody.
- Use the sheriff main number, 515-832-9500, for booking-record or Iowa Code chapter 22 request questions.
- Search Iowa DOC, BOP, ICE, or VINELink if the jail says the person moved or is not held locally.
Jail staff are not allowed to deliver personal messages except in emergency conditions. The county page lists a separate inmate voicemail number, 515-209-2393, for leaving messages for inmates.
Hamilton County Jail Contact
The Sheriff's Office and jail share the courthouse complex address. Use the jail phone for current custody, visitation schedule, housing schedule, and emergency-message questions. Use the sheriff main office for records questions when the issue is not just current custody.
Hamilton County Jail
2300 Superior Street, Suite 8
Webster City, IA 50595
515-832-8629
Jail fax: 515-832-8436
Hamilton County Sheriff's Office
2300 Superior Street, Suite 8
Webster City, IA 50595
515-832-9500
Monday-Friday, 8:00 a.m.-4:30 p.m.
Hamilton County Jail Visiting
Hamilton County lists inmate visiting hours as Monday through Friday from 1:30 p.m. to 5:30 p.m., but visits depend on the inmate's housing assignment and scheduled time. Onsite video visitation is free for one hour once each week at the inmate's scheduled time and day. The inmate must submit the visitor's name, date of birth, address, Social Security number, and relationship for approval 24 hours before the scheduled visit.
| Visit Type | Schedule | Approval | Cost |
|---|---|---|---|
| Inmate visiting hours | 1:30 p.m.-5:30 p.m., Monday-Friday | Depends on housing and jail schedule | Not published |
| Onsite video visit | One hour once weekly at scheduled time | Approved list required 24 hours ahead | Free |
| Remote video calling | 8:00 a.m.-10:00 p.m. | Reliance wallet or communicator setup | $0.25 per minute |
| Attorney visits | Contact jail | Contact jail | Not published |
Note: Call before traveling because visitor entry, parking, and locker details were not published in the reviewed county materials.
Hamilton County Jail Mail
Family and friends may send money orders and cash in the mail to the inmate at Hamilton County Jail. The county page requires a complete return address on the envelope. Preserve the official jail mail format when sending funds or mail tied to an inmate account.
| Item | Hamilton County Jail Rule |
|---|---|
| Mail address | Inmate Name, Hamilton County Jail, 2300 Superior St. Suite #8, Webster City, IA 50595 |
| Return address | Complete return address required on envelope |
| Kiosk deposits | Inmate Canteen kiosk at Sheriff's Office, available 24/7 |
| Kiosk payment | Cash and debit/credit accepted for inmate funds |
| Commissary provider | TurnKey Corrections / Inmate Canteen |
Hamilton County Jail Phone
Reliance provides phone, text, and video services for Hamilton County Jail. Inmates may make collect calls or use phone cards. Phone cards may be bought online or at the Sheriff's Office. The county page gives exact pricing for several communication options, which should not be confused with bond or court fees.
| Service | Provider | Price or Rule |
|---|---|---|
| Phone cards | Reliance | $10 for 20 minutes; $20 for 40 minutes |
| Text messages | Reliance | $0.09 per text message |
| Voice calls | Reliance | $0.25 per minute |
| Video calls | Reliance | $0.25 per minute, 8:00 a.m.-10:00 p.m. |
| Voicemail | Local voicemail number | 515-209-2393, available 24/7 |
Hamilton County Jail Booking
Booking starts after arrest, transfer, or court commitment. Jail staff verify identity, paperwork, warrants, holds, property, and custody needs. Iowa jail standards require admission, search, property, classification, and security procedures. Hamilton County's 2025 PREA audit supports the local classification context because it lists minimum, medium, and maximum custody levels and six housing units.
Booking charges are not convictions. The Hamilton County jail notice says a criminal charge is merely an accusation and defendants are presumed innocent unless and until proven guilty in court. Once formal charges are filed, court records should be checked in Iowa Courts Online, while custody questions still start with the jail or sheriff app.
Hamilton County Jail PREA
The Hamilton County Jail PREA page states that the Sheriff's Office has zero tolerance for sexual abuse, sexual assault, or sexual harassment. Reports can be made to the Sheriff, Jail Administrator, or Jail Supervisor by calling the jail. The 2025 PREA audit found the facility compliant with audited standards and documented a PREA Coordinator, reporting paths, and grievance handling.
The PREA page is the official local source for this safety policy.
PREA reporting is separate from ordinary custody lookup, visitation, or commissary questions.
Hamilton County Jail Holds
Hamilton County Jail may physically hold people for USMS, BOP, the State of Iowa, or surrounding counties. That does not mean the county jail page has every court or custody detail for the outside agency. If a person is a federal pretrial detainee, U.S. Marshals or federal court channels may matter. If the person is a federal sentenced inmate, use the BOP inmate locator. If immigration custody is involved after transfer, use the ICE Online Detainee Locator.
For a Hamilton County sentence that becomes state prison custody, use the Iowa DOC offender search. The DOC locator is updated weekly and includes county of commitment, including Hamilton, but it is not a same-day county jail roster.