Census Records

Historical population
Census Pop. % ±
1880 6 - -
1890 357 - 5,850.0%
1900 1,233 - 245.4%
1910 5,224 - 323.7%
1920 9,154 - 75.2%
1930 14,461 - 58.0%
1940 10,331 - -28.6%
1950 9,139 - -11.5%
1960 6,276 - -31.3%
1970 4,755 - -24.2%
1980 4,648 - -2.3%
1990 3,573 - -23.1%
2000 3,206 - -10.3%
2010 3,057 - -4.6%
2020 2,652 -13.2%
This information is from wikipedia.org.
Collingsworth wasn't created until 1876 so the first census under that name is in 1880. Before that, you need to check the records in Bexar or Young counties but there weren't many settlers here, if any.

1880 Federal Census
1890 Veteran's Schedule
1900 Federal Census Images
1910 Federal Census Images

Would you like to help with transcribing census records? Please Contact Me or visit The USGenWeb Free Census Project.