Illinois Census

United States U.S. Census  Illinois  Census

Online Resources

 * U.S. Census Reconstructed Records, 1660-1820, ($), index.
 * United States Online Census, 1790-1940
 * Illinois Census Returns, 1810 and 1818, ($), index.
 * Illinois, Compiled Census and Census Substitutes Index, 1810-1890, ($), index.
 * 1818 Illinois Territory Census, index.
 * Illinois Census, 1820, ($), index.
 * Illinois, State Census Collection, 1825-1865 Index and images ($)
 * Index only.
 * Index and Images.

Illinois State Censuses Online

 * 1818 Illinois Territory Census, index.
 * Illinois, State Census Collection, 1825-1865 Index and images ($)
 * Index only.
 * Index and Images.

Indexes: fiche, film, or book
For a list of microform and book indexes for the population schedules of Illinois, click here

Microfilm images
Family History Library Federal Census Non-Population Schedule Microfilms for Illinois

National Archives Non-Population Schedule Microfilms for Illinois


 * 1935 Census of Business
 * 1850 - 1880 Nonpopulation Census Schedules including agriculture, industry and mortality schedules
 * 1820 - 1880 Census of Manufactures

Indexes: fiche, film, or book
For a list of microform and book indexes for the non-population schedules of Illinois, click here.

State, territorial, and colonial censuses
Illinois took censuses in different years than the federal censuses. These censuses may have data different from those found in federal censuses. Check these censuses for more information on a family.


 * For 1840, 1830, and 1820, Illinois has both a federal and a state census.)


 * 1810-1855 Index Territorial, state, and federal censuses have been indexed in one alphabetical sequence along with county election returns and other records. Records for the 1825, 1835, and 1845 state censuses of many counties are missing or incomplete. The Illinois State Archives has the original card index complete through 1855. A microfilm copy made before the index was completed is:


 * Name Index to Early Illinois Records (Springfield, Ill.: Illinois State Archives, 1975). On 248 . At the time the index was microfilmed, most of the indexing of the 1855 census had not been completed.

Existing and lost censuses
For a list of available and missing Illinois censuses, click here.

Why use a census?
A well-indexed census is one of the easiest ways to locate where an ancestor's family lived and when they lived there. You can also use censuses to follow the changes in a family over time, and identify neighbors. These and other clues provided by censuses are important because they help find additional kinds of records about the family.

More about censuses
Click here for additional details about how to use censuses, such as:


 * historical background
 * contents of various census years and types


 * 1) index searching tips
 * 2) analyzing and using what you find
 * 3) census accuracy

Wiki articles describingonline collections are found at:


 * Illinois 1855 State Census (FamilySearch Historical Records)
 * Illinois 1865 State Census (FamilySearc Historical Records)