Census and Tax Info         
Culberson County was formed in 1912 from El Paso County, so if you're  searching for your ancestors before 1912, look for the census records for El Paso County.

Texas Census County Formation Maps from segenealogy.com  Shows by Census year the changes in county boundries.

Residents of Texas

Rootsweb Guide to Census Records plus Soundexes, Indexes and Finding Aids
Shirley Hornbeck's This and That Genealogy Tips on the Census
  #1, #2, #3

USGenWeb Census Project: Texas

Census Abstract Forms from genealogy.com

Volunteer To Help Transcribe A Census!
1860 Census
1860 Census for El Paso County from the El Paso TXGenWeb site
1870 Census
1870 Census for El Paso County - a work in progress - from the El Paso TXGenWeb site
1880 Census
Search the 1880 census at  familysearch.org  Select 1880 US, then Texas and El Paso County
1930 Census
Enumeration District Descriptions

Search the 1930 Census at FamilySearch

1940 Census
Search the 1940 census at FamilySearch
Culberson County
1900 Census
Search the 1900 census at FamilySearch

1910 Census
Search the 1910 census at FamilySearch

1920 Census
Search the 1920 census at FamilySearch