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Mahaska County, Iowa
Genealogy, History & Facts

County Vital Records ∣ County Census Records ∣ County Courthouse and Government Records ∣
County Societies, Family History Resources and County Genealogy Links

Mahaska County, Iowa Facts

When was Mahaska County, IA Created?
Mahaska County was established on February 17, 1843 (Organized in February 5, 1844) from Unorganized Territory. The county was named in honor of Mahaska, a chief of the Iowa Native American tribe

What is the County Seat of Mahaska County, IA?
The County Seat is located in Oskaloosa and the county government website is http://www.mahaskacounty.org/

What counties are adjacent to Mahaska County, IA?
Bordering Counties are Jasper County, Poweshiek County, Keokuk County, Wapello County, Monroe County, Marion County.

What cities and towns are in Mahaska County, IA?
Cities and towns located in the County include Barnes City, Beacon, Eddyville, Fremont, Keomah Village, Leighton, New Sharon, Oskaloosa, Rose Hill, University Park.

Mahaska County, IA Vital Records

Where can find Mahaska County Birth, marriage, Divorce and Death Records?
Mahaska County vital records can be found at the Iowa Office of Vital Records which has copies of birth, marriage and death records from July 1880. There is a fee for each copy requested. Please refer to the information to the Statewide Vital Records in Iowa for current fees and application process.

You can search online for Mahaska County Birth, Marriage, Divorce or Death Records. You can also Order Electronically Online or can download an application for Iowa Birth Certificate, Marriage Certificate, Death Certificate Application to mail.

Mahaska County, IA Census Records


What Mahaska County, IA census records are available?
There are many types of census records for Mahaska County guide you in researching your family tree. Federal Population Schedules are available for 1850, 1860, 1870, 1880 (free index), 1890 (fragment), 1900, 1910, 1920, 1930, 1940.

Mahaska Co. Mortality Schedules can be found for 1850, 1860, 1870 and 1880. Mahaska Co. Industry and Agriculture can be obtained for 1850, 1860, 1870 and 1880. Mahaska Co. Union Veterans Schedules is available for 1890.

Another Iowa census is the Iowa State Census Collection from 1836-1925. One can find free online and printable census forms to help you with your research. See Also Iowa Census Records Research Guide

Mahaska County, IA Courthouse and Government Records

Mahaska County Courthouse

What genealogical records can I find in the Mahaska County Courthouse?
The below facts shows exactly what death, marriage, birth, property, wills, and court records are typically in Mahaska County. The years listed below are the first noted records with this county. See Also Iowa Corthouse Records Research Guide.

PLEASE READ FIRST!!! Please call the clerk’s department to confirm hours, mailing address, fees and other specifics before visiting or requesting information because of sometimes changing contact information. The Department Offices DO NOT DO RESEARCH. The files are available to interested parties, barring private issues. Many staff will guide individuals in locating the materials, however it’s up to the person to carry out the research.

  • Mahaska County Courthouse (all departments listed below are located here, unless otherwise noted)
    • Address: 106 S 1st St, Oskaloosa, IA 52577
    • Phone: (641) 673-7786
  • Mahaska County Recorder’s Office maintains 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. 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.
    • Birth / Death Records: 1880
    • Marriage Records: 1844
    • Land Records: 1845
  • Mahaska County Clerk of Court 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.
    • Probate Records: 1844
    • Court Records: 1844
  • BLM Land Records

Mahaska County, IA Societies and Family History Resources

What genealogical and historical societies, archives, museums, associations and libraries are available for Mahaska County, IA?
A list of Mahaska County Historical  and Genealogical Societies, Libraries, Archives. See also list of Statewide Iowa Archives, Historical & Genealogical Societies.

Where can I connect with other Mahaska County, IA Researchers through message boards and forums?

What other genealogical resources are available in Mahaska County, IA?
The following are web links to Genealogy, Records and Resources pertaining to Mahaska County. Many of these genealogy links fall into 3 categories: Business oriented Sites, Private Sites or Organization Sites. Some have free access some have to have a cost. This is simply a list which has been compiled or submitted. I do not endorse or promote one genealogy site over another.

Mahaska Co. IA Books, Newspapers & Publications

Mahaska Co. IA Cemeteries & Church Records

Mahaska Co. IA Family Websites, Pictures & Histories

Mahaska Co. IA General and History Websites

Mahaska Co. IA Maps, Atlases & Gazetteers

Mahaska Co. IA Military Records

Mahaska Co. IA Schools & Directories

  • Iowa Gazetteer and Business Directory, 1884-1885  (search.ancestry.com) This database contains the 1884-85 Iowa gazetteer and business directory. The gazetteer covers each city, town, village, and settlement in Iowa and includes a description of each place and a directory of the people engaged in business or the professions located there.