Butler County Inmate Population
The Butler County inmate population starts with the Butler County Sheriff's Office, which operates the Butler County Jail in Allison. Official county research found one local detention facility, not a network of jail annexes or city lockups. The jail holds people arrested for crimes committed in Butler County so they can appear in court later. It also holds people serving misdemeanor county-jail sentences. That means the Butler County inmate population is mostly a local, short-term custody group, not a state prison population.
Custody counts can change for simple reasons. A new arrest can raise the count. A bond release, court order, transfer, or sentence can lower it. The sheriff's page publishes facility capacity and older average daily population data, but it does not publish a current daily population dashboard or an official live jail roster. For that reason, a Butler County inmate population check should treat the sheriff's current custody confirmation as the local source and use court, DOC, BOP, ICE, and IowaVINE tools for the parts of the custody path those systems control.
The Butler County government site places the jail in a rural county context. The county is the local record source for sheriff and jail information, while the Iowa Judicial Branch controls filed court records. State prison records are handled by the Iowa Department of Corrections. Those systems overlap after arrest, but they do not replace one another.
Butler County Inmate Statistics
The most useful Butler County inmate population numbers are facility size, historical daily count, jail layout, and county population. The sheriff's page reports the jail's official capacity and historical 1999 jail figures. FRED and Census sources give county resident population, which helps show the scale of the local jail, but it is not a jail roster count.
| Measure | Figure | Source / Year |
|---|---|---|
| Butler County Jail capacity | 12 inmates | Butler County Sheriff's Office, page viewed June 13, 2026 |
| Jail cells | 5 cells | Butler County Sheriff's Office |
| Historical average daily jail population | 11 inmates per day | Butler County Sheriff's Office, 1999 figure |
| Historical average length of stay | 15 days | Butler County Sheriff's Office, 1999 figure |
| 2025 county resident population | 14.049 thousand | FRED/Census Bureau resident population series |
The screenshot from the official sheriff jail page captures the county source used for capacity, history, cell layout, meals, commissary, and visiting hours.
That source is more reliable for Butler County Jail facts than third-party roster pages because it is the county agency page.
Butler County Population Trends
No official current Butler County Jail average daily population was located. The available trend data is therefore split: one official jail figure from 1999 and a resident population series for the county as a whole. That does not prove the current jail count, but it does explain why the Butler County inmate population page should not pretend there is a live county dashboard. The local jail is small, and even a few arrests or releases can change the daily count by a large share.
| Year | ADP / population | Note |
|---|---|---|
| 1999 | 11 jail ADP | Official sheriff historical figure, with 15-day average length of stay |
| 2020 | 14,334 county residents | Iowa Secretary of State 2020 Census county table |
| 2021 | 14.357 thousand residents | FRED/Census Bureau series |
| 2022 | 14.258 thousand residents | FRED/Census Bureau series |
| 2023 | 14.190 thousand residents | FRED/Census Bureau series |
| 2024 | 14.093 thousand residents | FRED/Census Bureau series |
| 2025 | 14.049 thousand residents | FRED/Census Bureau series, updated Mar. 27, 2026 |
Note: The 1999 jail count should not be used as a current occupancy estimate.
Who Butler County Holds
The sheriff's official jail narrative gives broad categories rather than a detailed demographic report. Butler County Jail can hold adult males, adult females, and juveniles who have been waived into adult court. It holds people arrested for Butler County crimes before court and people serving misdemeanor sentences of up to one year. Research did not locate a current official breakdown by sex, age, race, charge class, hold type, arresting agency, or pretrial status.
- Pretrial detainee
- A person held after arrest while a case, bond decision, or court appearance is pending.
- Misdemeanor sentence
- A lower-level conviction that can result in a county jail term, including Butler County Jail time.
- DOC custody
- Iowa Department of Corrections custody for sentenced state prisoners, searched through the state locator.
- Detainer
- A hold or notice from another agency that can delay release from the county jail.
Butler County Jail Capacity
The Butler County Jail is a five-cell facility with capacity for 12 inmates. The cell layout is unusually specific in the sheriff's own description: three single cells, one three-person cell, and one six-person cell. Against the 1999 average daily population of 11, that historical year was near the jail's stated capacity. The research did not locate current overcrowding litigation, a consent decree, a jail construction bond, a closure notice, or a current daily count.
The county's recent sheriff hiring material is relevant only as staffing context. It showed dispatcher/jailer hiring for a small office where deputies and communication dispatchers may be cross-trained as jailers. It does not prove a current crowding level. For current housing or visit changes, use the sheriff's non-emergency line before travel.
Butler County Jail Laws
Iowa law controls how Butler County jail records, court charges, warrant materials, and DOC offender records are made public or withheld. These laws do not create an online Butler County roster by themselves. They set the rules for asking the lawful custodian for records and for understanding why some data may be delayed, limited, or confidential.
Key Statutes:
Iowa Code Chapter 22 lets people examine and copy public records unless an exception applies, with reasonable actual costs allowed.
Iowa Code section 804.29 keeps arrest-warrant filing information confidential until arrest, return, or appearance unless a court orders otherwise.
Iowa Code section 904.601 supports public access to core Iowa DOC offender records for people committed to state corrections.
Iowa Administrative Code 201 Chapter 50 addresses jail definitions, inspections, accreditation, and state jail standards.
Butler County DOC Search
No Iowa Department of Corrections prison was found in Butler County. That matters because a person sentenced to state prison is no longer searched as a Butler County Jail inmate. Use the Iowa DOC Offender Search for state custody or supervision. The DOC system has fields for name, offender number, sex, location, offense, county of commitment, and name-search mode. Its public notice says offender records are public information under Iowa Code section 904.601, but it also warns that information updates weekly and can change quickly.
The Iowa DOC Inmate and Family Services page is also separate from Butler County Jail. State prison visiting, money deposits, phone contact, mail, care packages, and attorney contact rules are not the same as county jail rules. State money deposits require the recipient's commissary number and facility name.
Search Butler County Custody
No official online Butler County Jail roster was located on the county site. That changes the search path. The first step is not a roster form. It is a direct custody check with the Sheriff's Office, followed by court, state, federal, immigration, and notification tools depending on what happened after arrest. For deeper roster details, the Butler County inmate records page focuses on the same fallback chain.
- Call the Butler County Sheriff's Office at 319-346-6621 and ask whether the person is in current Butler County Jail custody.
- Have the person's full legal name, date of birth or age, approximate arrest date, and arresting city or agency if known.
- Search Iowa Courts Online after the case is filed to confirm charges, court dates, disposition entries, fines, and fees.
- Use the Iowa DOC locator if the person has been sentenced or transferred into state custody.
- Use BOP for federal custody and ICE ODLS for immigration detention.
Butler County Inmate Lookup
Because the official Butler County site does not publish a jail roster search form, the local field table is simple. It documents the absence of a county search tool and points readers to the direct sheriff contact and Chapter 22 records request route. If a third-party page claims to show a Butler County roster, verify the claim against official county sources before relying on it.
| Field Label | Type | Required | Notes |
|---|---|---|---|
| No official online roster located | n/a | n/a | Call 319-346-6621 or request records under Iowa Code Chapter 22. |
The Iowa DOC search form is useful after transfer to state custody, but it should not be treated as a Butler County Jail roster.
Butler County Jail Records
Research did not locate a public Butler County Jail inmate profile sample. A request for a booking sheet or jail record should therefore be narrow. Ask for the record type, date range, subject name, booking date, arresting agency, case number if known, and preferred delivery method. Jail staff may be able to confirm custody, but release of copies depends on Iowa public-record rules and any confidentiality limits.
| Record item | Butler County source path |
|---|---|
| Booking number or booking time | Not published online by the county; request from the Sheriff's Office if releasable. |
| Charges | Booking charge may differ from filed court charge; check Iowa Courts Online after filing. |
| Bond | Call the Sheriff's Office and verify court orders through the Clerk of Court. |
| Mugshot | No official gallery located; request a booking photo under Chapter 22 if available and releasable. |
| Release or transfer status | Confirm with the jail, IowaVINE, DOC, BOP, or ICE depending on custody type. |
Jail vs Prison Lookup
Butler County Jail and Iowa DOC answer different questions. The jail is the local place to confirm a recent arrest, local hold, court appearance status, or misdemeanor jail sentence. DOC is the statewide system for sentenced prisoners and some supervision records. Federal and immigration custody use other databases.
| Custody type | Where to look | What it covers |
|---|---|---|
| Butler County pretrial or short sentence | Butler County Sheriff's Office | Local jail custody, bond, release, and records request routing |
| Iowa state prison or supervision | Iowa DOC Offender Search | Sentenced state prisoners and DOC public records |
| Federal prison | BOP inmate locator | Federal inmates from 1982 to present |
| Immigration detention | ICE Online Detainee Locator System | Current ICE custody searched by A-number or biographical details |
Butler County Facilities
The facility map has one Butler County detention facility. City police departments such as Parkersburg and Aplington route immediate police contact through Butler County Dispatch, but official research did not identify a separate municipal jail that holds people beyond short-term police processing.
- Butler County Jail - the county jail in Allison for Butler County arrests, pretrial detention, misdemeanor sentences, males, females, and juveniles waived into adult court.
Butler County Custody FAQ
How big is the Butler County inmate population?
The official sheriff page lists a 12-inmate jail capacity and a 1999 average daily population of 11 inmates. No current daily roster count or current average daily population dashboard was located in official Butler County sources.
How do I search for a Butler County inmate?
Call the Butler County Sheriff's Office first because no official online roster was located. Then check Iowa Courts Online for filed charges, Iowa DOC for state prisoners, IowaVINE for notifications, BOP for federal custody, and ICE ODLS for immigration detention.
Are Butler County jail mugshots online?
No official Butler County mugshot gallery or booking-photo page was located. The Butler County jail mugshots page explains how to request a booking photo and why Iowa public-record exceptions may matter.
Where do court charges appear after arrest?
Formal charges appear through the Iowa court system after filing. The court records after jail arrest page explains how the jail booking charge can differ from the prosecutor's filed charge.