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North Central, PA Regional Planning and Development Commission (1)
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Ann Arbor Data Catalog (35)
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Athens Conservancy GIS Center (53)
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Big Ten Academic Alliance Geospatial Information Network (9)
Brandeis University (1)
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CMAP (Chicago Metropolitan Agency for Planning) Data Hub (51)
Calvert County Open GIS Data Portal (16)
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Carroll County GIS Open Data (29)
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Cass County GIS Downloadable Files (10)
Center for Ancient Middle Eastern Landscapes, Institute for the Study of Ancient Cultures, University of Chicago (8,792)
Center for Rural Pennsylvania (1)
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Evansville, Vanderburgh County, Indiana Open Data Collection (50)
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GEOhio Spatial Data Discovery Portal (314)
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GeoDa Data and Lab (73)
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Grant County Open Data Hub (28)
Hamilton County, Indiana Open Data Collection (43)
Harford County Planning and Zoning Open GIS (74)
Harvard (183)
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Hoosier Resilience Index: Indiana (17)
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Humanitarian Data Exchange (6,701)
ICPSR (Inter-university Consortium for Political and Social Research) (1)
Illinois DOT Open Data Portal (100)
Illinois Geospatial Data Clearinghouse (192)
Indiana Covid-19 Cases Tracker (1)
Indiana University (14,884)
IndianaMap (378)
Iowa Emergency Operations Center (1)
Iowa Geodata (235)
IowaDOT Open Data (546)
Kenosha County, WI GIS Open Data Portal (31)
Lake County Illinois Open Data Portal (53)
Land Records Data Portal of Columbia County, WI (61)
LandScan Global Population Database (23)
Library of Congress Geography and Map Division (1)
Lincoln Open Data and Performance Management (90)
Linn County, Iowa Open Data Portal (53)
Lorain County GIS Data (85)
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MapHub (1)
Maryland National Capital Parks and Planning Commission (1)
Maryland iMap (1,256)
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Natural Resources Research Institute (106)
Nebraska Game & Parks Map and Data Portal (1)
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Northwestern University (251)
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PHLmaps (323)
Pennsylvania Department of Conservation and Natural Resources Open Data Portal (57)
Pennsylvania Department of Environmental Protection (148)
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Pennsylvania State University (3,888)
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PolicyMap (387)
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Prince George's County Open Data Portal (13)
Princeton (1,004)
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Racine County GIS Download (41)
Ramsey County Open Data (36)
Renville County Open GIS Data (44)
Russian Military Topographic Map Collection (3)
Rutgers University-New Brunswick (4,554)
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Sarpy County GIS Portal (106)
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Stanford (1,109)
Stark County GIS Data (110)
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Summit County GIS Data (31)
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The Newberry Library (53)
The Ohio State University (255)
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U.S. Fish and Wildlife Service Open Data (1,987)
UM Matthaei Botanical Gardens and Nichols Arboretum (63)
UW Digital Collections Center (2,596)
UW-Madison Robinson Map Library (6,077)
University of Chicago (71)
University of Chicago Library GIS Data Hub (34)
University of Illinois Urbana-Champaign (2,501)
University of Iowa (3,595)
University of Maryland (274)
University of Michigan (1,140)
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Waukesha County GIS Download (45)
Waupaca County GIS Download (29)
Waushara County GIS Download (10)
Western Pennsylvania Regional Data Center Open Data (52)
Wilkin County, Minnesota Open Data (17)
Wisconsin Geological and Natural History Survey (61)
Wisconsin Rapids Online Map Portal (18)
Wisconsin State Cartographer's Office (1)
WisconsinView (2,170)
Wood County Open Data Portal (13)
Yellow Medicine County Hub (5)
York County, PA GIS Open Data Portal (50)
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