New Horizons Genealogy

"Specializing in New England and New York Colonial American Ancestry"

Search Free Colorado Genealogy Records Online

Capital: Denver

Search Free Colorado Genealogy and Family History Records Online including census, cemetery, vital, military and other genealogical and historical records that can be used for your family history research.

Our Colorado genealogy and family history page is a place where you can come in and research your genealogy and family history. We also do our best to provide a history of the area, to provide you with an overview of the time in which your ancestors lived.

We regret that we are unable to do personal research for you. All genealogical and family history records we come across are being added to this website. Please keep checking back.

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Colorado History

The state was named for the Colorado River, which Spanish travelers named the Río Colorado for the ruddy (Spanish: colorado) silt the river carried from the mountains. The Territory of Colorado was organized on February 28, 1861, and on August 1, 1876, U.S. President Ulysses S. Grant signed a proclamation admitting Colorado to the Union as the 38th state. Colorado is nicknamed the "Centennial State" because it became a state 28 days after the centennial of the United States Declaration of Independence.

Colorado is bordered by Wyoming to the north, Nebraska to the northeast, Kansas to the east, Oklahoma to the southeast, New Mexico to the south, Utah to the west, and Arizona to the southwest, at the Four Corners. Colorado is noted for its vivid landscape of mountains, forests, high plains, mesas, canyons, plateaus, rivers, and desert lands.

Free Colorado Genealogy Records Online

Colorado Census Records

Colorado Military Records

Colorado Genealogy by County

County Created Parent County County Seat
Adams County1903ArapahoeBrighton
Alamosa County1913Costilla, ConejosAlamosa
Arapahoe County1861Original CountyLittleton
Archuleta County1885ConejosPagosa Springs
Baca County1889Las AnimasSpringfield
Bent County1874GreenwoodLas Animas
Boulder County1861Original CountyBoulder
Broomfield County & City2001Adams, Boulder, Jefferson, WeldBroomfield
Chaffee County1879LakeSalida
Cheyenne County1889Bent, ElbertCheyenne Wells
Clear Creek County1861Original CountyGeorgetown
Conejos County1861Original CountyConejos
Costilla County1861Original CountySan Luis
Crowley County1911Bent, OteroOrdway
Custer County1877FremontWestcliffe
Delta County1883GunnisonDelta
Denver County & City1901ArapahoeDenver
Dolores County1881OurayDove Creek
Douglas County1861Original CountyCastle Rock
Eagle County1883SummitEagle
Elbert County1874Douglas,  GreenwoodKiowa
El Paso County1861Original CountyColorado Springs
Fremont County1859Original CountyCanon City
Garfield County1883SummitGlenwood Springs
Greenwood County1870Kit Carson; dissolved 1874; divided between Bent & Elbert Counties
Gilpin County1861Original CountyCentral City
Grand County1874SummitHot Sulphur Springs
Gunnison County1877LakeGunnison
Hinsdale County1874ConejosLake City
Huerfano County1861Original CountyWalsenburg
Jackson County1909Grand, LarimerWalden
Jefferson County1861Original CountyGolden
Kiowa County1889Cheyenne, BentEads
Kit Carson County1889ElbertBurlington
Lake County1861Original CountyLeadville
LaPlata County1861Original CountyDurango
Larimer County1861Original CountyFort Collins
Las Animas County1866HuerfanoTrinidad
Lincoln County1889ElbertHugo
Logan County1887WeldSterling
Mesa County1883GunnisonGrand Junction
Mineral County1892HinsdaleCreede
Moffat County1911RouttCraig
Montezuma County1889La PlataCortez
Montrose County1883GunnisonMontrose
Morgan County1889WeldFort Morgan
Otero County1889BentLa Junta
Ouray County1877Hinsdale,  San JuanOuray
Park County1861Original CountyFairplay
Phillips County1889LoganHolyoke
Pitkin County1881GunnisonAspen
Platte County1872Weld; dissolved 1874; reverted back to Weld County
Prowers County1889BentLamar
Pueblo County1861Original CountyPueblo
Rio Blanco County1889SummitMeeker
Rio Grande County1874Conejos,  CostillaDel Norte
Routt County1877GrandSteamboat Springs
Saguache County1866Rio GrandeSaguache
San Juan County1876La PlataSilverton
San Miguel County1883OurayTelluride
Sedgwick County1889LoganJulesburg
Summit County1861Original CountyBreckenridge
Teller County1899El PasoCripple Creek
Washington County1887Weld,  ArapahoeAkron
Weld County1861Original CountyGreeley
Yuma County1889Washington,  ArapahoeWray

Genealogical Research in Colorado

Colorado State Archives
1313 Sherman Street, Room 120
Denver, CO 80203-2274
Reference Desk Phone: 303-866-2358

Colorado Genealogical Society
P.O. Box 9218
Denver, CO 80209-0218

Denver Public Library
Central Library
10 W. 14th Ave. Pkwy.
Denver, CO 80204
Reference Telephone: 720-865-1821

If you know of a Colorado Genealogy link that should be added to this list, please Contact us