Grundy County was created on February 17, 1841 (Laws, 1841, p. 74) and was formed from La Salle County. Present area, or parts of it, formerly included in: LaSalle County (1831–1841) , [Southeastern Part: Vermilion County (1826–1831) , Edgar County (1823–1826) , Clark County (1819–1823) ], Southwestern Part: [Tazewell County (1827–1831) , Fayette County (1821–1826) ], [North of Illinois River: Putnam County (1825–1831) , Fulton County (1823–1825) , Pike County (1821–1823) ], Clark County (1819–1823) , Crawford County (1816–1819) , Edwards County (1815–1816) , Madison County (1812–1815) , St. Clair County (1801–1812) and Knox, Northwest Territory (1790–1801) .
The County was named for Felix Grundy, a lawyer and politician, United States Senator from Tennessee, and Attorney General of the United States. The County Seat is Morris (1842-Present) at a site previously called Grundytown, then Grundyville, and finally Morris.

The Official County website is located at http://www.grundyco.org/admin.htm. All departments below at located at the Grundy County Courthouse, 111 East Washington Street, Morris, IL 60450 , unless a different address is listed below.
NOTE: The record dates below are from the earliest date to present time.
Grundy County Circuit Court Clerk has Probate Records from 1841 and Court Records from 1837 and is located at the address above. Phone Number: (815) 941-3256
Grundy County Recorder has Land Records from 1832 and is located at the courthouse. Phone Number: (815) 941-3222
Grundy County Clerk has Birth / Death Records from 1877 and Marriage Records from 1841 and is located at the courthouse. Phone Number: (815) 941-3222
County Treasurer’s responsibilities include the statutory duties required as County Treasurer and as Ex-Officio County Collector of Real Estate Property Taxes and Drainage District Taxes for the entire county.
Below is a list of online resources for Grundy County Court Records. Email us with websites containing Grundy 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.
Illinois Department of Public Health, Division of Vital Records, 605 W. Jefferson St., Springfield, IL 62702-5097. It can take up to 6 weeks to get a vital record from Illinois.
A number of resources are available for individuals doing genealogical research using vital records filed in the state of Illinois. Births and deaths before January 1, 1916 and marriages before January 1, 1962 are recorded only in the office of the county clerk where the event occurred. Most county clerks have indexes to the records that are prior to 1916 that are available for the purpose of genealogical research. These indexes generally provide the name, date and place of occurrence and are located in county courthouses located throughout the state. Although self-service access to the indexes is generally permitted, the law limits physical access to the individual records to the clerk's staff. When you locate a record from the index, it will be necessary for the clerk to pull the record for you once you have paid the appropriate search fee. Please check with the county clerk for fees and policies on reviewing indexes.
Below is a list of online resources for Grundy County Vital Records. Email us with websites containing Grundy 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 Grundy County, Illinois are 1850, 1860, 1870, 1880, 1900, 1910, 1910, 1920 and 1940.Other Federal Schedules to look at when researching your Family Tree in Grundy County, Illinois are Industry and Agriculture Schedules availible for the years 1850, 1860, 1870 and 1880.
The Mortality Schedules for the years 1850, 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 Grundy County Census Records. Email us with websites containing Grundy County Census Records by clicking the link below:
Below is a list of online resources for Grundy County Maps. Email us with websites containing Grundy County Maps by clicking the link below:
Below is a list of online resources for Grundy County Military Records. Email us with websites containing Grundy County Military Records by clicking the link below:
There are many churches and cemeteries in Grundy County. Some transcriptions are online. A great site is the Grundy County Tombstone Transcription Project.
Below is a list of online resources for Grundy County Cemetery & Church Records. Email us with websites containing Grundy County Cemetery & Church Records by clicking the link below:
Below is a list of online resources for Grundy County Family Trees, web forums and other family type information. Email us with websites containing Grundy County Family Trees, web forums and other family type information by clicking the link below: