callowaycounty-ky.gov
- Official website provides a brief overview of the county, a directory of officials, forms in PDF format and FAQs.
- http://www.callowaycounty-ky.gov/

Capitol Impact: Calloway County
- Political, educational, and economic data.
- http://www.capitolimpact.com/gw/cntydetail.asp?state=ky&stfips=21&stname=Kentucky&fips=21035

National Association of Counties - Profile of Calloway County
- Provides a list of elected officials, cities within the county, census details, and contact details for the county court house.
- http://www.naco.org/Template.cfm?Section=Find_a_County&Template=/cffiles/counties/county.cfm&id=21035

Calloway County Decennial Population Statistics - 1830 - 2000
- Includes total population, county area, and population density.
- http://ukcc.uky.edu/~census/21035.txt

Census Bureau - Calloway County
- Provides population and economic information.
- http://quickfacts.census.gov/qfd/states/21/21035.html

Calloway County Property Valuation Administration
- Large website containing property ownership records and sales data. Includes county maps that show actual property lines. All information is periodically updated.
- http://ccpva.org