Wikipedia: Jasper County, Iowa
- Encyclopedia article highlights geography, demographics and links to localities. With maps.
- http://en.wikipedia.org/wiki/Jasper_County,_Iowa

Jasper County Soil and Water Conservation District
- Features staff directory, nature images, contractors list, and information about projects and programs. Located in Newton.
- http://jasperswcd.org/

Jasper County, Iowa
- Provides directory of departments, board agendas and minutes, courthouse history, tax data, and community links.
- http://www.co.jasper.ia.us/

City-Data.com: Jasper County, Iowa
- Profiles population demographics, jobs, housing, agriculture and crime statistics. Contains a list of recreational areas, churches, cemeteries, post offices, charts, graphs and maps.
- http://www.city-data.com/county/Jasper_County-IA.html

Jasper County, Iowa - US Census Bureau
- Provides population, demographic, and housing information.
- http://quickfacts.census.gov/qfd/states/19/19099.html

Iowa State University Extension - Jasper County
- Offers agricultural, business, family and 4-H programs and resources. Includes staff directory, news, events, hours and directions. Located in Newton.
- http://www.extension.iastate.edu/jasper/

Jasper County Economic Development Corporation
- Private, nonprofit group formed to provide economic leadership and expertise to smaller communities of the county. Includes information about available buildings and sites, census data, map of housing developments and resource links.
- http://www.centraliowa.net/