Why Census Records Matter
Census records are one of the most valuable tools in genealogical research. Taken every ten years, the federal census provides a snapshot of families showing household members, ages, occupations, birthplaces, land ownership, and more.
For Union County researchers, census records help establish family structure, migration patterns, and economic status. When used alongside land, probate, and tax records, census records allow you to reconstruct entire communities.
Federal Census Availability for Union County
- 1820
- 1830
- 1840
- 1850 (first census listing every household member by name)
- 1860
- 1870
- 1880
- 1890 - largely destroyed
- 1900
- 1910
- 1920
- 1930
- 1940
- 1950 (most recent publicly available census)
The 1850 census marked a major turning point because it began listing each individual by name rather than only heads of household.
Kentucky State Census
Kentucky conducted limited state census records. Surviving records vary by county and year. Researchers should also examine tax lists, which often function similarly to census substitutes, especially before 1850.
When researching early Union County residents, check tax records in addition to federal census schedules.
Union County Census Indexes & Resources
Research Tips
- Track families across multiple decades to confirm identity.
- Compare neighbors - families often migrated together.
- Use land and probate records to confirm relationships suggested by census data.
- Examine mortality schedules (1850-1880) for additional family members who may not appear elsewhere.