1790 Jefferson County, Pennsylvania Census Records
- Free 1790 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Census Guide
1800 Jefferson County, Pennsylvania Census Records
- Free 1800 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Census Guide
1810 Jefferson County, Pennsylvania Census Records
- Free 1810 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Census Guide
1820 Jefferson County, Pennsylvania Census Records
- Free 1820 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Census Guide
1830 Jefferson County, Pennsylvania Census Records
- Free 1830 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Census Guide
1840 Jefferson County, Pennsylvania Census Records
- Free 1840 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Census Guide
1850 Jefferson County, Pennsylvania Census Records
- Hosted at Free 1850 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Jefferson County, Pennsylvania PAGenWeb Project
- Hosted at USGenWeb Census Project
- Hosted at Census Guide
1860 Jefferson County, Pennsylvania Census Records
- Free 1860 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at FamilySearch.org
- 1860 Census Search, Free
- Hosted at Census Guide
1870 Jefferson County, Pennsylvania Census Records
- Free 1870 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Family Search.org
- Hosted at Census Guide
1880 Jefferson County, Pennsylvania Census Records
- Free 1880 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at FamilySearch.org
- 1880 Census Search, Free
- Hosted at Census Guide
1890 Jefferson County, Pennsylvania Census Records
- Free 1890 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Census Guide
1900 Jefferson County, Pennsylvania Census Records
- Free 1900 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Family Search.orgHosted at USGenWeb Census Project
- 1900 US Federal Census – Un-indexed, browsable
- Hosted at Pennsylvania USGenWeb Archives
- Hosted at Jefferson County Archives, USGenWeb Archives Pennsylvania
- Hosted at Census Guide
1910 Jefferson County, Pennsylvania Census Records
- Free 1910 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Census Guide
1920 Jefferson County, Pennsylvania Census Records
- Free 1920 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Family Search.org
- 1920 US Federal Census – Not complete
- Hosted at Census Guide
1930 Jefferson County, Pennsylvania Census Records
- Free 1930 Census Form for your Research
- Hosted at Ancestry.com – Ancestry Free Trial
- Hosted at Census Guide