Pima County was one of the original four counties which comprised Arizona in 1864.
1870 Pima County, Arizona Census
- Free 1870 Census Form for your Research
- Hosted at USGenWeb Census Project
- Hosted at Ancestry.com – 14 Days Free
- Hosted at Census Guide
1880 Pima County, Arizona Census
- Free 1880 Census Form for your Research
- Hosted at Pima County, Arizona USGenWeb Archives
- Hosted at Ancestry.com – 14 Days Free
- Hosted at Census Guide
1890 Pima County, Arizona Census
- Free 1890 Census Form for your Research
- Hosted at Ancestry.com – 14 Days Free
- Hosted at Census Guide
1900 Pima County, Arizona Census
- Free 1900 Census Form for your Research
- Hosted at Ancestry.com – 14 Days Free
- Hosted at Census Guide
1910 Pima County, Arizona Census
- Free 1910 Census Form for your Research
- Hosted at Ancestry.com – 14 Days Free
- Hosted at Census Guide
1920 Pima County, Arizona Census
- Free 1920 Census Form for your Research
- Hosted at Ancestry.com – 14 Days Free
- Hosted at Census Guide
1930 Pima County, Arizona Census
- Free 1930 Census Form for your Research
- Hosted at Ancestry.com – 14 Days Free
- Hosted at Census Guide