List of online encyclopedias of U.S. states
{{Short description|none}}
All except one (New York) are free and deal with a state of the United States.
{{Expand list|date=December 2018}}
| class="wikitable sortable" | ||
| State | Name | Sponsored by |
|---|---|---|
| Alabama | Encyclopedia of Alabama | Alabama Humanities Foundation |
| Arkansas | Encyclopedia of Arkansas | Central Arkansas Library System |
| id="Colorado Encyclopedia"
| Colorado | [https://coloradoencyclopedia.org/ Colorado Encyclopedia] | History Colorado |
| id="Encyclopedia of Connecticut Biography"
| Connecticut | [https://www.worldcat.org/oclc/656599711 Encyclopedia of Connecticut Biography] (10 vols, 1917–23) | |
| id="Floripedia"
| Florida | [https://fcit.usf.edu/florida/docs/docs.htm Floripedia: A Florida Encyclopedia] (a collection of links to original sources, not an encyclopedia) | Florida Center for Instructional Technology, University of South Florida |
| Georgia | New Georgia Encyclopedia | Georgia Humanities and the University of Georgia Press |
| Illinois | [http://www.encyclopedia.chicagohistory.org/ Encyclopedia of Chicago] | Chicago History Museum |
| Indiana
|[https://indyencyclopedia.org Encyclopedia of Indianapolis] | ||
| id="Kansapedia"
| Kansas | [https://www.kshs.org/kansapedia/kansapedia/19539 Kansapedia] (not to be confused with KansasPedia.com) | Kansas Historical Society (a state agency) |
| Kentucky | [http://www.kyenc.org The Kentucky Enciclopedia] | University Press of Kentucky |
| id="Encyclopedia of Louisville"
| Kentucky | [https://books.google.com/books?id=pXbYITw4ZesC Encyclopedia of Louisville] | University Press of Kentucky |
| id="64 Parishes"
| Louisiana | [https://64parishes.org/encyclopedia 64 Parishes] (formerly Know Louisiana) | Louisiana Endowment for the Humanities |
| id="Maine: An Encyclopedia"
| Maine | [http://maineanencyclopedia.com/ Maine: An Encyclopedia] | Publius Research |
| Massachusetts | [https://www.worldcat.org/oclc/463608436 Encyclopedia of Massachusetts, biographical—genealogical] (1916) | |
| Minnesota | MNopedia | Minnesota Historical Society |
| id="Mississippi Encyclopedia"
| Mississippi | [https://mississippiencyclopedia.org Mississippi Encyclopedia] | Mississippi Humanities Council |
| Missouri
|[https://missouriencyclopedia.org/ Missouri Encyclopedia] | ||
| id="Online Nevada Encyclopedia"
| Nevada | [http://www.onlinenevada.org Online Nevada Encyclopedia] | Nevada Humanities |
| New York | [https://go.gale.com/ps/aboutJournal.do?contentModuleId=AONE&resultClickType=AboutThisPublication&actionString=DO_DISPLAY_ABOUT_PAGE&searchType=BasicSearchForm&docId=GALE%7C2EJN&userGroupName=wikipedia&inPS=true&rcDocId=GALE%7CA194195429&prodId=AONE&pubDate=120050101 Encyclopedia of New York State] | Not free; requires subscription. Available through Gale. [https://www.booklibrarian.com/pdfepub/the-encyclopedia-of-new-york-state 30-day free trial from booklibrarian.com]. |
| id="NCPedia"
| North Carolina | [http://ncpedia.org NCPedia] | State Library of North Carolina |
| Ohio | [https://web.archive.org/web/20231227183636/https://ohiohistorycentral.org/w/Welcome_To_Ohio_History_Central Ohio History Central] (archived location) | Ohio History Connection |
| Oklahoma | [https://www.okhistory.org/publications/encyclopediaonline.php The Encyclopedia of Oklahoma History and Culture] | Oklahoma Historical Society |
| Oregon | The Oregon Encyclopedia | Portland State University and the Oregon Historical Society |
| id="Encyclopedia of Greater Philadelphia"
| Pennsylvania | [https://philadelphiaencyclopedia.org Encyclopedia of Greater Philadelphia] | Mid-Atlantic Regional Center for the Humanities |
| id="South Carolina Encyclopedia"
| South Carolina | [http://www.scencyclopedia.org/sce/ South Carolina Encyclopedia] | "A joint project of South Carolina Humanities, the University of South Carolina Press, the USC Libraries, the [https://dornsife.usc.edu/digitalhumanities/ USC Center for Digital Humanities], the [https://www.sc.edu/study/colleges_schools/artsandsciences/index.php USC College of Arts & Sciences], the [http://www.artsandsciences.sc.edu/iss/ USC Institute for Southern Studies], the [http://www.statelibrary.sc.gov South Carolina State Library], and many other organizations." |
| Tennessee | Tennessee Encyclopedia | Tennessee Historical Society – University of Tennessee Press |
| Texas | Handbook of Texas | Texas State Historical Association |
| Virginia | Encyclopedia Virginia | Virginia Foundation for the Humanities and Library of Virginia (formerly the Virginia State Library) |
| Virginia | [https://archive.org/search.php?query=creator%3A%22Tyler%2C%20Lyon%20Gardiner%2C%201853-1935%22%20encyclopedia Encyclopedia of Virginia Biography] (1915) | Arranged by time period and office held, not alphabetically. |
| Washington | HistoryLink | HistoryLink, 4Culture, King County, Washington, Seattle Office of Arts & Culture, The Norcliffe Foundation |
| id="e-WV"
| West Virginia | [https://www.wvencyclopedia.org e-WV: The West Virginia Encyclopedia] | West Virginia Humanities Council |
| id="Encyclopedia of Wyoming"
| Wyoming | [https://www.wyohistory.org/encyclopedia Encyclopedia of Wyoming] | Wyoming State Historical Society |