National Register of Historical Places
- The National Park Services list of official historical buildings, districts and archeological sites in San Bernardino County.
- http://www.nationalregisterofhistoricplaces.com/CA/San+Bernardino/state.html

Counting California: San Bernardino County
- California Digital Library's Demographic information on the county.
- http://countingcalifornia.cdlib.org/counties/sanbernardin.html

San Bernardino Valley Amateur Astronomers
- Club news, calendar, activities, and other information.
- http://www.sbvaa.org/

CERES - San Bernardino County
- An index to environmental information for the county. Extensive reference includes road, weather, and flood conditions, demographics, historical resources, maps.
- http://ceres.ca.gov/geo_area/counties/San_Bernardino/

County of San Bernardino
- Official site. Provides directory of departments, information for visitors, trivia quiz, job openings, and online property tax payments.
- http://www.co.san-bernardino.ca.us/