Olmsted County, Minnesota Genealogy

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United States Gotoarrow.png Minnesota Gotoarrow.png Olmsted County

Guide to Olmsted County Minnesota genealogy. Birth records, marriage records, death records, census records, family history, and military records.

Hand and keyboard.jpg Minnesota
Online Records

Olmsted County, Minnesota
Map of Minnesota highlighting Olmsted County
Location in the state of Minnesota
Map of the U.S. highlighting Minnesota
Location of Minnesota in the U.S.
Founded February 20, 1855
County Seat Rochester
Address Olmsted County Courthouse
151 SE 4th Street
Rochester, MN 55904
Phone: 507.287.1444
Olmsted County Website

County Courthouse

Clerk District Court incomplete birth and death records from 1871,
marriage records from 1855, divorce records
from 1860 and court records form 1858.
County Court has probate records. Coroner and
Department of Health have burial records[1]


This county, established February 20, 1855, was named in honor of David Olmsted, first mayor of St. Paul, in 1854, who in 1855 removed to Winona, in the county of that name, adjoining Olmsted county.

Parent County

County seat: Rochester [2]

  • For a brief history of how Olmsted County was named, click here.  Then select Olmsted County.

Boundary Changes

Record Loss


Populated Places

  • Byron
  • Chatfield
  • Dover
  • Eyota
  • Oronoco
  • Pine Island
  • Rochester
  • Stewartville


Cascade | Dover | Eyota | Elmira | Farmington | Haverhill | High Forest & 45 | Kalmar | Marion |New Haven | Orion| Oronoco | Pleasant Grove | Quincy | Rochester | Rock Dell & 45| Salem | Viola



Neighboring Counties





1850, 1860, 1870, 1880 and 1900 US Federal Censuses for Olmsted, Minnesota can be found at FamilySearch Record Search]. Free searchable name indexes and images are available for most census years. 


LDS Ward and Branch Records

  • Rochester



Local Histories

Local histories are available for Olmsted County, Minnesota Genealogy. County histories may include biographies, church, school and government history, and military information. For more information about local histories, see the wiki page section Minnesota Local Histories.



Civil War

Civil War service men from Olmsted County served in various regiments. Men often joined a company (within a regiment) that originated in their county. Listed below are many companies or regiments that were formed from men of Olmsted County.

- 1st Regiment, Minnesota Cavalry (Mounted Rangers), Company I.
- 1st Regiment, Minnesota Heavy Artillery, Company H.
- 2nd Regiment, Minnesota Infantry, Companies A and B.
- 2nd Regiment, Minnesota Cavalry, Company L.
- 3rd Regiment, Minnesota Infantry, Companies C and K.
- 5th Regiment, Minnesota Infantry, Company I.
- 6th Regiment, Minnesota Infantry, Company H.
- 8th Regiment, Minnesota Infantry, Company D.
- 11th Regiment, Minnesota Infantry, Company H.
- Brackett's Battalion, Minnesota Cavalry, Companies C and D.




Minnesota tax records complement land records and can be used in place of censuses before 1820 or to supplement the years between censuses. Because only persons who owned taxable property were listed, many residents were not included in tax lists. There may also be gaps of several years in the tax records of some counties. For more information, see the wiki page Minnesota Taxation.

Vital Records

Societies and Libraries

Family History Centers

Web Sites

• Ole & Lena: the genealogy and local history of a Norwegian settlement (Dodge and Olmsted counties in Minnesota) http://web.mac.com/moiseth/Ole_and_Lena:_genealogy_/Welcome.html


  1. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Olmsted County, Minnesota page 367, At various libraries (WorldCat); FHL Book 973 D27e 2002.
  2. The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).