Colorado State Archives, Historical Records Index

The State of Colorado, Department of Personnel & Administration maintain a Historical Records Index.

The fields that can be searched are
 * Name
 * Year from/to
 * Record Type
 * County

The following records are included in the index:

1870 Federal Census Adams County Divorces 1904-1913 Adams County Inheritance Tax 1929-1943 Adams County Old Age Pension 1933-1936 Adams County Teachers 1913-1935 Adams County Wills 1903-1938 Amache Japanese Internment Camp Teachers List 1942-1945 Arapahoe County Old Age Pension 1933-1936 Arapahoe County Poor Hospital 1895-1899 Arapahoe County Probate Cases 1902-1937 Arapahoe County Teachers Cards Dist 1 &amp; 6 1953 Arapahoe County Voter Registrations 1893-1905 Bar Admission Files 1899-1950 Bent County Divorce 1907-1921 Birth Records, Misc. to 1909 from Custer, Elbert, Rio Blanco, Boulder, Gilpin and Arapahoe counties Boulder County Birth Index 1892-1906 Boulder County Divorce 1904-1918 Boulder County Mothers Compensations 1914-1934 Boulder County Inheritance Tax Records 1941-1943 Boulder County Old Age Pension 1933-1936 Boulder County Probates 1862-1900 Boulder County Rights of Way Cases 1871-1872 Civilian Conservation Corps Enrollments (Statewide) 1936-1942 Clear Creek County School Census 1874 Clear Creek County Wills 1950-1964 Colorado Civil War Casualties Colorado Land Commissioners Patents 1878-1970 Colorado Court of Appeals Case Files 1891-1911 Conejos County Divorces 1899-1915 Conejos County Inheritance Tax 1918-1923 Costilla County Poor Record 1890-1932 Costilla County Probate Record 1876-1914 Custer County Pupil Register 1891-1896 Custer County Inheritance Tax 1907-1946 Custer County Wills 1887-1966 Denver Birth Index 1875-1909 Denver Death Index 1870-1909 Denver Inheritance Tax 1909-1912 Denver Lot and Block Index 1862-1917 Denver Old Age Pension 1933-1936 Denver War Risk Insurance Applications 1914-1917 Dolores County Court Cases 1881-1953 Douglas County Inheritance Tax 1911-1944 Douglas County Justice of the Peace Docket 1871-1892 Douglas County Old Age Pension 1933-1936 Douglas County Wills 1886-1961 Eagle County Probate 1884-1935 Elbert County Birth Index 1869-1906 Elbert County Divorce 1870-1910 Elbert County Inheritance Proceedings 1922-1941 Elbert County Judges Docket 1928-1938 Elbert County Old Age Pension 1933-1936 Elbert County 8th Grade Promotions 1918-1930 Elbert County Wills 1887-1966 El Paso County Divorce 1903-1941 El Paso County Old Age Pension 1933-1936 El Paso County Placer Mine Location Certificates 1892-1942 Fremont County Inheritance Tax 1913-1943 Garfield County Divorce Record 1906-1916 Garfield County Inheritance Tax 1909-1919, 1926-1942 Gilpin County Bankruptcy Docket 1867-1876 Gilpin County Chancery Cases 1862-1878 Gilpin County District Court Filings 1861-1882 Gilpin County Probate Court Civil Case Filings 1874-1892 Gilpin County Inheritance Tax 1910-1922 Gilpin County Marriages 1864-1944 Horse (Docked) Register 1899-1907 Horseshoers 1897-1920 Huerfano County Inheritance Tax 1910-1946 Huerfano County Poor Records 1916-1923 Huerfano County Tax List 1873 Indian Industrial Schools Census 1900 Jefferson County Inheritance Tax 1913-1945 Jefferson County Civil Cases 1864-1886 Jefferson County Probates 1862-1977 Kit Carson County Birth Report Register 1892-1907 Kit Carson County Death Register 1893-1907 Kit Carson County Land Registration Receipts 1913-1939 Kit Carson Old Age Pension 1933-1936 Lake County Births to 1909 Lake County School District #6 1880-1903 Lake County School District #12 1893-1900 Lake County School District #15 1952-1958 La Plata County WPA Enrollments 1935-1942 Larimer County Mothers Compensations 1920-1933 Larimer County Naturalization Index 1885-1958 Larimer County Old Age Pensions 1933-1936 Leadville School Census 1883-1910 Lincoln County Old Age Pension 1933-1936 Lincoln County Probate Cases 1890-1931 Logan County Inheritance Tax 1913-1942 Mesa County CCC Enrollments 1934-1942 Mesa County Inheritance Tax 1920-1934 Mesa County Motor Vehicle Licenses 1913-1917 Mesa County Persons Subject to Military 1885-1887 Mesa County Persons Exempt from Military 1887 Mesa County Probate 1883-1900 Mine Location Certificates 1905-1910 Mineral County Old Age Pension 1935-1936 Moffat County Inheritance Tax 1920-1943 Morgan County Mothers Compensation 1935 Morgan County Old Age Pension 1933-1936 Ouray Births 1891-1902 Ouray County Probate Cases 1878-1919 Park County Divorce Record 1957-1974 Park County Will Record 1892-1925 Pitkin County Divorce Record 1931-1964 Pitkin County Inheritance Tax 1938-1956 Pitkin County Probate 1881-1953 Prohibition Arrests 1918-1926 Rio Grande County Teacher Certificate Applications 1874-1893 Rocky Ford School Census 1877-1892 Routt County Ditch Claim Statements 1902-1903 Routt County Inheritance Tax 1918-1923 Routt County Will Record 1888-1905 Saguache County Burial Records 1923-1925 Saguache County Poor Records 1915-1926 San Miguel County Old Age Pension 1934 Spanish-American War Volunteers 1898-1899 State Penitentiary Index 1871-1973 State Reformatory Index 1887-1939 Statewide Divorce Index 1880-1939 Summit County Probate Cases/Record 1877-1916 Teacher Experience Cards 1899-1958 Teller County Inheritance Tax 1917-1936 Teller County Wills 1894-1971 Transcript of Records 1861-1865 Vietnam Deaths, 1966, 1968 Washington County Pauper Record 1896-1897 Weld County Old Age Pensions 1931 Weld County Poor Record 1902-1913 Weld County WW1 Vets World War I Civilian Service Questionnaires