OBrien was created on January 15, 1851 (Organized in 1860) from Unorganized Territory. The County was named for William Smith O'Brien, an Irish patriot. The County Seat is Primghar.
Counties adjacent to O'Brien County are Osceola County (north), Clay County (east), Cherokee County (south), Sioux County (west). Cities and Towns Include Archer, Calumet, Hartley, Paullina, Primghar, Sanborn, Sheldon, Sutherland.
O'Brien County is one of 11 counties that was carved out of Woodbury County (then called Wahkaw.) The first courthouse in the county was built by Archibald Murray of logs cut from the banks of the Little Sioux River. This county courthouse was rarely used as a courthouse because of the lack of records that needed to be kept and not much county business was conducted. This cabin was later relocated to Waterman Township, where the county had purchased 40 acres. The first date recorded here was on June 9, 1862.
The log cabin courthouse was replaced in 1870 by a frame building. The cost of the building was estimated at several thousand dollars. This building was destroyed by a fire in 1871 and replaced by a similar looking structure. In 1873 the county seat was moved to Primghar, which was more centrally located.
Primghar was named using the first letters of the first names of influential county officials and the surveyors of the town. In 1874 a courthouse was built on the present courthouse square. The two-story courthouse was built at a cost of $2,000 and completed on April 4. This building was later condemned and sold for $470.
In 1879 the citizens of Sheldon attempted to relocate the county seat to their town. In 1882, Sanborn succeeded in removing the records from Primghar in a "raid," but they were unsuccessful in obtaining the county seat permanently. Following the unsuccessful attempt by Sheldon, a $6,000 courthouse was constructed by the Green Brothers in 1887. In 1902 this building was added onto, at a cost of $1,400.
In 1911 the city of Sheldon was again unsuccessful in obtaining the county seat. They lost in a special election by a vote of 3,161 to 1,447. In 1914 the voters of O'Brien County approved $160,000 towards the construction of a new courthouse. This building was occupied in April 1917. The three-story building is of Neo-Classical style and constructed of Bedford limestone.

All Departments below can be contacted by clicking the link below, calling or visiting the OBrien County Courthouse at 155 South Hayes Avenue, Primghar 512456; Tel: 712-957-3255. See Also Courthouse Street Addresses for current courthouse addresses for all Iowa Counties. NOTE: The record dates below are from the earliest date to present time. O'Brien County was attached to Woodbury County for a breif time. Some early records may be found there.
OBrien County Recorder's Office has Birth Records from 1880, Marriage Records from 1860, Death Records from 1880 and Land Records from 1857.
The Recorder's Office was created in 1839 by the First Legislative Assembly. The Recorder continues to maintain official records of documents affecting title to real estate. Every real estate transaction that takes place begins in the Recorder's Office. One of the major duties of the office is the management of public records. As a result, accuracy and preservation of records are a must in the Recorder's Office. Instruments that are recorded are not only important for today, but serve as a historical library for all of the tomorrows.
In addition to real estate transactions, the Recorder's Office issues titles and liens; records veterans discharge papers; processes passport applications; accepts marriage applications and issues the subsequent license; issues certified copies of birth, death and marriage records as well as other numerous duties.
OBrien County Clerk of Court Office has Probate Records from ? and Court Records from ?.
In each of Iowa's 99 counties, a clerk of district court office manages and maintains all trial court records, including pleadings, evidence and orders. The clerks of court have hundreds of administrative duties. They accept and process fines, fees and court costs owed to the state, child support checks, and civil judgments owed to litigants. They maintain a record of liens on all real estate in the county. Clerks help with involuntary hospitalization cases. They have the authority to dispose of scheduled violations which are not contested and do not require a court hearing. Clerks are also responsible for informing state and local government agencies of court orders.
The Iowa district court has general jurisdiction of all civil, criminal and juvenile cases and probate matters in the state. The district court, which is also known as the trial court, is the point of entry in the court system for most cases. The Iowa district court is composed of different kinds of judicial officers with varying amounts of jurisdiction-judicial magistrates, associate juvenile judges, associate probate judges, district associate judges, and district court judges.
OBrien County Tax Assesors Office. The Treasurer is responsible for collection of property taxes and other fees for state, county, city, school districts, community colleges, and other taxing entities such as townships, fire districts, and drainage districts.
The tax rolls for personal property and real estate were kept by the auditor or the treasurer of each county. A few of these records have been microfilmed and are available at the State Historical Society of Iowa. Original county tax rolls are usually not transferred.
Search Local County Court Records - Many court records are not digitized yet, which means the only way to obtain these records is by going to the actual courthouses. Someone from our network of court-runners will go retrieve the records and then send you the results. Average response time is 38 hours. Civil Records include Lawsuits, Bankruptcies, Liens and judgments, Marriage/divorce litigation, Child custody, Civil rights violations ands Other. Criminal Records include Violent crimes, Theft and robbery, DUI/DWI's, Drugs and alcohol, Sexual offenses, Some traffic violations, Behavioral.
Below is a list of online resources for OBrien County Court Records. Email us with websites containing OBrien County Court Records by clicking the link below:
Birth, marriage, and death records are connected with central life events. They are prime sources for genealogical information.
Iowa Department of Public Health, Bureau of Vital Statistics, Lucas State Office Building, 1st Floor, 321 East 12th Street, Des Moines, IA 50319, (515) 281-4944 recording, Iowa prefers you get all Vital Records from the State Office in Des Moines and NOT at the County Clerk's office. They have the following records:
Local registrars are located in county recorders offices and maintain records of birth, death and marriages that have occurred in that county. County registrars do not have code authority to have Birth, death, and marriage records between the years 1921 to 1941.
Ordering Vital Records - You can also order
Ordering Vital Records by Mail - $15.00 per birth certificate & $10.00 per death certificate. Fees are payable by check or money order made out to the Iowa Department of Public Health. Checks must be drawn from the applicant's account; money orders must be in the name of the applicant. Fees must be paid at the time of the application. Filled requests take 30-45 days, depending on seasonal demands and mail service. Genealogy requests take least 60 days. You can download an application online for Birth Certificates, Marriage Certificates or Death Certificates.
Walk-In Service: Walk-in service is available for in-person requests at the state vital records office between the hours of 7:00 a.m. and 4:45 p.m., Monday through Friday, except for state-observed holidays. The office is located at the address listed below, just inside the main north entrance and to the right of the main lobby. The Lucas building is the first state office building east of the state Capitol building, on the south side of Grand Avenue. Written applications must be satisfactorily completed and signed. Applicants must also provide valid, current government-issued photo identification. Copies may either be picked up after two days or mailed to an entitled person. In-person requests may also be paid in cash.
Below is a list of online resources for OBrien County Vital Records. Email us with websites containing OBrien County Vital Records by clicking the link below:

Few, if any, records reveal as many details about individuals and families as do government census records. Substitute records can be used when the official census is unavailable
Countywide Records: Federal Population Schedules that exist for OBrien County, Iowa are 1860, 1870, 1880, 1890 (fragment, see below), 1900, 1910, 1910, 1920 and 1940.Other Federal Schedules to look at when researching your Family Tree in OBrien County, Iowa are Industry and Agriculture Schedules availible for the years 1860, 1870 and 1880. The Mortality Schedules for the years 1860, 1870 and 1880.There are free downloadable and printable Census forms to help with your research. These include U.S. Census Extraction Forms and U.K. Census Extraction Forms.
Below is a list of online resources for OBrien County Census Records. Email us with websites containing OBrien County Census Records by clicking the link below:
Below is a list of online resources for OBrien County Military Records. Email us with websites containing OBrien County Military Records by clicking the link below:
Below is a list of online resources for OBrien County Genealogical Addresses. Email us with websites containing OBrien County Genealogical Addresses by clicking the link below:
There are many churches and cemeteries in OBrien County. Some transcriptions are online. A great site is the OBrien County Tombstone Transcription Project.
Below is a list of online resources for OBrien County Cemetery & Church Records. Email us with websites containing OBrien County Cemetery & Church Records by clicking the link below:
Below is a list of online resources for OBrien County Family Trees, web forums and other family type information. Email us with websites containing OBrien County Family Trees, web forums and other family type information by clicking the link below: