Illinois

BIRTH RECORDS
*Chicago birth certificates, 1878-1922https://www.familysearch.org/search/catalog/229686https://www.ancestry.com/search/collections/2545/
*Cook County birth certificates, 1878-1894https://www.familysearch.org/search/catalog/256592
*Cook County birth certificates, 1916-1922https://www.familysearch.org/search/catalog/258450
*Chicago birth registers, 1871-1915https://www.familysearch.org/search/catalog/260525
*Registers of births outside of the city [Chicago], 1878-1894https://www.familysearch.org/search/catalog/290932[1878-1885; 3 films not yet included]
Chicago, birth records, 1871-1978https://www.familysearch.org/search/catalog/2327154[Delayed birth certificates, 1917-1940; birth certificates, 1923-1939; birth affidavits, 1920-1926] 
Cook County birth records, 1888-2006https://www.familysearch.org/search/catalog/2296659 [Birth certificates, 1923-1941; delayed series, 1917-1940; stillbirths, 1928-1942]
*Birth corrections and delayed births, 1916-1918https://www.familysearch.org/search/catalog/264466 
*Chicago birth corrections and indexes, 1871-1915;unrelated, actual birth records, 1870s to 1940shttps://www.familysearch.org/search/catalog/263721
Indexes:Cook County Birth Certificates, 1871-1940https://www.familysearch.org/search/collection/1462519
Cook County Birth Registers, 1871-1915https://www.familysearch.org/search/collection/1463129
Cook County, Birth Certificates, 1871-1940https://www.familysearch.org/search/collection/1462519 
Cook County Birth Registers, 1871-1915https://www.familysearch.org/search/collection/1463129
Cook County Birth Index, 1916-1935https://www.ancestry.com/search/collections/1499/
MARRIAGE RECORDS
*Marriage licenses, 1871-1920; index, 1871-1916https://www.familysearch.org/search/catalog/43803
Cook County marriage records, 1920-1959https://www.familysearch.org/search/catalog/2620697 
Cook County Marriage Index, 1871-1920https://www.familysearch.org/search/collection/1463145https://www.ancestry.com/search/collections/2556/
Cook County Marriage Index 1912-1942https://www.ancestry.com/search/collections/2273/
Cook County Marriage Index, 1930-1960https://www.ancestry.com/search/collections/1500/

DEATH RECORDS

Chicago Death Index 1871-1933. (FamilySearch)
  1. For deaths 1871-1877.  This is the only public index that covers the early deaths. If you find a match, contact the Cook County clerk's office. 
  2. Out-of-town deaths are indicated by the "OT" in the column just before the date of death. If you find one of those entries, it's best to contact the vital records office where the death took place to see if you can get an original record. However, if the death occurred 1909-1915, the matching Chicago records (likely derivative) are available at FamilySearch. See Out of town deaths, 1909-1915.
  3. Stillbirths are indicated by the "SB" in the column just before the date of death. some stillbirths are recorded in the birth registers at the end of each alphabetical section; many new stillbirth certificates appear to be online at FamilySearch, accessible through the catalog.

Source: ChicagoGenealogy.com, Celebrating Digital Access: CDI 187-1933, 9/13/2017.

*Chicago death certificates, 1878-1915https://www.familysearch.org/search/catalog/42925
*Chicago death certificates, 1916-1922https://www.familysearch.org/search/catalog/394759
*Chicago death certificates, 1916-1945https://www.familysearch.org/search/catalog/628228 [not available as digital images]
Chicago death records, 1909-1994https://www.familysearch.org/search/catalog/2305942[Death certificates, 1921-1938; stillbirths, 1909-1941]
*Cook County death certificates, 1878-1909, 1916-1922https://www.familysearch.org/search/catalog/88896 https://www.ancestry.com/search/collections/2552/
*Coroners death certificates, 1879-1904https://www.familysearch.org/search/catalog/89876
*Out of town deaths, 1909-1915https://www.familysearch.org/search/catalog/280109
INDEXESCook County Deaths, 1878-1994https://www.familysearch.org/search/collection/1463134
Cook County Death Index, 1908-1988https://www.ancestry.com/search/collections/1501/
Record groups marked with an asterisk have been digitized from the Family History Library films.Source: ChicagoGenealogy, Which Chicago Records are Available on FamilySearch, 9/12/2017

NORTHWESTERN UNIVERSITY, DEERING LIBRARY AND ARCHIVE

You can now find us on the third floor of Deering Library in room 305 (i.e., in the former Special Collections reading room). This space now serves as the single access point for patrons to view Special Collections, University Archives, and Music rare materials in person. Please also note the following changes to our policies and procedures:

 

Cook County Clerk of the Circuit Court in Chicago

Richard Daley Center, Room 1113, 50 W. Washington, Chicago.  312-603-6601

Naturalization records: Declarations of Intention

https://services.cookcountyclerkofcourt.org/NR/default.aspx

Cook County Medical Examiner for Coroner Inquest when deaths occurred by:

https://www.cookcountyil.gov/service/how-obtain-death-records-reports