- Armstrong County Government - Features public notices, contacts, jury information, and county offices.
- Capitol Impact: Armstrong County - Economic, educational, and political data.
- Handbook of Texas Online : Armstrong County - Current and historical information about Armstrong County.
- The Political Graveyard: Armstrong County, Tex. - County information and links.
- TXGenWeb Armstrong County, Texas - Genealogy information and links for the county.
- YBLost: Armstrong County, Texas - Armstrong County, Texas public record information.
