Martin County Library System
- A group of public libraries that is part of the Traverse des Sioux Library System. Board members, staff, policies, information on each branch, links to local web sites, online catalog.
- http://www.martincountylibrarysystem.org/

Martin County Youth for Christ
- An organization for Christian teens offers opportunities for fellowship, fun, and growing in faith.
- http://community.gospelcom.net/Brix?pageID=3878

National Association of Counties: Martin County
- Elected county officials, links to demographic information and list of place names in the county.
- http://www.naco.org/Template.cfm?Section=Find_a_County&Template=/cffiles/counties/county.cfm&id=27091

National Weather Service: Martin County, MN
- Zone forecast, statewide forecast, current conditions around the area. Statewide weather summary for past 24 hours, including precipitation, temperatures.
- http://weather.noaa.gov/cgi-bin/iwszone?Sites=:mnz091

Martin County Map
- Shows major highways, county line, some cities. Interactive.
- http://tiger.census.gov/cgi-bin/mapsurfer?infact=2&outfact=2&act=move&on=CITIES&on=majroads&on=miscell&on=places&on=interstate&on=statehwy&on=ushwy&tlevel=-&tvar=-&tmeth=i&mlat=43.67715&mlon=-94.5567

Martin County Minnesota (MNGenWeb site)
- Genealogy and local history.
- http://www.rootsweb.com/~mnmartin/