Colorado Census

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United States  >  U.S. Census  >  Colorado  >  Colorado_Census

Available and Lost Census Schedules

COLORADO:  Existing and Lost Federal Census Schedules[1]
  Population Schedules Vets Slave Mortal Agricu Indust Defect
1860 Jun 1 Exist for all areas, part of Nebraska, Kansas, and New Mexico.            
1870 Jun 1 Exist for all counties.     Exist Exist Exist  
1880 Jun 1 Exist for all counties.     Exist Exist Exist Exist
1885 Exist for all counties except lost Fremont and Garfield.     Exist Exist Exist  
1890 Jun 2 Lost Lost          
1900 Jun 1 Exist for all counties.            
1910 Apr 15 Exist for all counties.            
1920 Jan 1 Exist for all counties.            
1930 Apr 1 Exist for all counties.            


United States Censuses 1870-1920—Free Internet census indexes and images to the 1870, 1880 (index only), 1900, and 1920 (partial index only) can be viewed on the FamilySearch Record Search. These indexes show every name listed on the census, and except for 1880 and 1920, are also linked to census images including information about each person’s residence, age, birthplace, occupation, other family members, and neighbors.

Historical Background

1876--Colorado became a state. Prior to statehood, Colorado was part of divided among the territories of Kansas, Nebraska, Utah, and New Mexico.


Online Indexes

Use available online indexes to locate your Colorado ancestors.  Online indexes are available at:

United States Census Indexes 1870-1920—Free Internet census indexes to the 1870, 1880, 1900, and 1920 (partial index only) can be viewed on the FamilySearch Record Search.


Heritage Quest Online:

Soundex (phonetic) Indexes 

1880--partial Soundex index exists

1900--Soundex index available

1910--Use the Denver Street Index (Family History Library fiche 6331481) to help locate individuals in the census.

1920--Soundex index available

Special Indexes

Colorado Historical Society has a card index to the 1860 census. Separate indexes for the Nebraska and New Mexico portions are included in the 1860 indexes for those territories. An index to Arapahoe County, Kansas (where most of Colorado's 1860 population lived) is found in search 7A on the AIS census index on microfiche. An 1870 Colorado Territory census and index are also at the Family History Library.  

Special Censuses

Mortality Schedule

Both the 1860 and 1870 censuses include mortality schedules.

State Censuses

1885--Colorado took a state census. 

Family History Library Book 978.852 X2c

Territorial Censuses

An 1860 federal territorial census was taken in the four territories from which Colorado was created. 

Northeastern Section-- enumerated with Nebraska 1860 census schedules designated "unorganized territory."

Central Eastern section-- enumerated with Arapahoe County, Kansas Territory.

Southeast section-- enumerated in parts of Taos and Mora Counties of New Mexico Territory.Since half of the state of Colorado, included in the Utah Territory was not settled, no census was taken in that area.

Web Sites

FamilySearch Record Search has free indexes and images for 1870, and 1900; but indexes only for 1880, and 1920.


Heritage Quest Online:

Census Online:

Genealogy Today:

Access Genealogy:

Census Finder:


RootsWeb: use with:

Colorado State Archives:

Colorado Historical Society:

Mortality Schedules:


  1. William Thorndale and William Dollarhide, Map Guide to the U.S. Federal Censuses, 1790-1920 (Baltimore: Genealogical Publishing, 1987), 51-59, and William Dollarhide, The Census Book: A Genealogist's Guide to Federal Census Facts, Schedules and Indexes (Bountiful, Utah: HeritageQuest, 1999), 103-104.