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Imagery (6,255)
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Ashland County, WI GIS Open Data Portal (9)
Athens Conservancy GIS Center (53)
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Big Ten Academic Alliance Geospatial Information Network (9)
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CMAP (Chicago Metropolitan Agency for Planning) Data Hub (51)
Calvert County Open GIS Data Portal (16)
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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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Humanitarian Data Exchange (6,701)
ICPSR (Inter-university Consortium for Political and Social Research) (1)
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Indiana Covid-19 Cases Tracker (1)
Indiana University (14,884)
IndianaMap (374)
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 (85)
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 (1,249)
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Minnesota Legislative Coordinating Commission - Geospatial Information (LCC-GIS) (27)
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National Renewable Energy Laboratory (1)
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Natural Resources Research Institute (106)
Nebraska Game & Parks Map and Data Portal (1)
NebraskaMap (152)
New Jersey Department of Environmental Protection's (NJDEP) Bureau of GIS (300)
New Jersey Farmland Preservation Program (22)
New Jersey Geographic Information Network (NJGIN) Open Data Portal (310)
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Northwestern University (251)
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OpenIndy Data Portal (82)
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PHLmaps (322)
Pennsylvania Department of Conservation and Natural Resources Open Data Portal (57)
Pennsylvania Department of Environmental Protection (156)
Pennsylvania Spatial Data Access (PASDA) (2,037)
Pennsylvania State University (3,888)
Peoria County GIS Open Data Portal (70)
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PolicyMap (387)
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Prince George's County GIS Open Data (262)
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)
SEMCOG Open Data (36)
Saint Louis County GIS & Mapping (18)
Sarpy County GIS Portal (131)
Sauk County GIS Download (51)
SimplyAnalytics (12)
Social Explorer (448)
South Bend, IN Open Data (42)
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St Mary's County GIS Downloadable Layers (25)
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Stanford (1,109)
Stark County GIS Data (110)
State of Michigan Open Data Portal (367)
State of Pennsylvania (1)
Summit County GIS Data (31)
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The Newberry Library (53)
The Ohio State University (255)
Three Rivers Park District Open Data (5)
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U.S. Fish and Wildlife Service Open Data (1,972)
UM Matthaei Botanical Gardens and Nichols Arboretum (62)
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)
University of Minnesota (5,990)
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Waukesha County GIS Download (37)
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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