National Register of Historic Places listings in Adams County, Indiana

This is a list of the National Register of Historic Places listings in Adams County, Indiana.

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Adams County, Indiana, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map.^[1]

There are 10 properties and districts listed on the National Register in the county.

Properties and districts located in incorporated areas display the name of the municipality, while properties and districts in unincorporated areas display the name of their civil township. Properties and districts split between multiple jurisdictions display the names of all jurisdictions.

This National Park Service list is complete through NPS recent listings posted August 22, 2025.^[2]

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Current listings

^[3]	Name on the Register^[4]	Image	Date listed^[5]	Location	City or town
1	Adams County Courthouse	Adams County Courthouse More images	September 17, 2008 (#08000914)	112 S. 2nd St. 40°49′47″N 84°55′28″W / 40.829722°N 84.924444°W / 40.829722; -84.924444 (Adams County Courthouse)	Decatur
2	John S. Bowers House	John S. Bowers House	March 5, 1982 (#82000055)	104 Marshall St. 40°50′04″N 84°55′26″W / 40.834444°N 84.923889°W / 40.834444; -84.923889 (John S. Bowers House)	Decatur
3	Ceylon Covered Bridge	Ceylon Covered Bridge More images	January 25, 2007 (#06001289)	County Road 900S over the Wabash River in Limberlost County Park, northeast of Ceylon 40°36′51″N 84°56′35″W / 40.614167°N 84.943056°W / 40.614167; -84.943056 (Ceylon Covered Bridge)	Wabash Township
4	Ben Colter Polygonal Barn	Ben Colter Polygonal Barn	April 2, 1993 (#93000194)	Eastern side of State Road 101, 0.6 miles south of its junction with Piqua Rd. and north of Pleasant Mills 40°47′53″N 84°50′27″W / 40.798056°N 84.840833°W / 40.798056; -84.840833 (Ben Colter Polygonal Barn)	St. Marys Township
5	Decatur Homesteads	Upload image	December 6, 2022 (#100008407)	Each side of Homestead Dr. and the west side of High St. 40°48′49″N 84°55′12″W / 40.81369°N 84.9201°W / 40.81369; -84.9201 (Decatur Homesteads)	Decatur
6	Charles Dugan House	Charles Dugan House	December 22, 2009 (#09001124)	420 W. Monroe St. 40°49′52″N 84°55′40″W / 40.831231°N 84.927711°W / 40.831231; -84.927711 (Charles Dugan House)	Decatur
7	Geneva Downtown Commercial Historic District	Geneva Downtown Commercial Historic District More images	March 21, 2002 (#02000196)	144-455 E. Line St. 40°35′33″N 84°57′33″W / 40.5925°N 84.959167°W / 40.5925; -84.959167	Geneva
8	Grand Rapids and Indiana Railroad Depot	Grand Rapids and Indiana Railroad Depot	March 6, 2017 (#100000712)	111 N. 7th St. 40°49′44″N 84°55′48″W / 40.828889°N 84.930000°W / 40.828889; -84.930000	Decatur
9	Lenhart Farmhouse	Lenhart Farmhouse More images	June 27, 2002 (#02000688)	6929 N. Piqua Rd., north of Decatur 40°50′47″N 84°55′12″W / 40.846389°N 84.92°W / 40.846389; -84.92 (Lenhart Farmhouse)	Root Township
10	Gene Stratton Porter Cabin	Gene Stratton Porter Cabin More images	June 27, 1974 (#74000027)	200 E. 6th St. 40°35′13″N 84°57′36″W / 40.586944°N 84.960000°W / 40.586944; -84.960000 (Gene Stratton Porter Cabin)	Geneva

References

^ The latitude and longitude information provided in this table was derived originally from the National Register Information System, which has been found to be fairly accurate for about 99% of listings. Some locations in this table may have been corrected to current GPS standards.
^ National Park Service, United States Department of the Interior, "National Register of Historic Places: Weekly List Actions", retrieved August 22, 2025.
^ Numbers represent an alphabetical ordering by significant words. Various colorings, defined here, differentiate National Historic Landmarks and historic districts from other NRHP buildings, structures, sites or objects.
^ "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
^ The eight-digit number below each date is the number assigned to each location in the National Register Information System database, which can be viewed by clicking the number.

[1] The latitude and longitude information provided in this table was derived originally from the National Register Information System, which has been found to be fairly accurate for about 99% of listings. Some locations in this table may have been corrected to current GPS standards.

[2] National Park Service, United States Department of the Interior, "National Register of Historic Places: Weekly List Actions", retrieved August 22, 2025.

[NRHP_colors-3] Numbers represent an alphabetical ordering by significant words. Various colorings, defined here, differentiate National Historic Landmarks and historic districts from other NRHP buildings, structures, sites or objects.

[nris-4] "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.

[refnums-5] The eight-digit number below each date is the number assigned to each location in the National Register Information System database, which can be viewed by clicking the number.

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v t e U.S. National Register of Historic Places in Indiana
Topics	Contributing property Keeper of the Register Historic district History of the National Register of Historic Places National Park Service Property types
Lists by county	Adams Allen Bartholomew Benton Blackford Boone Brown Carroll Cass Clark Clay Clinton Crawford Daviess Dearborn Decatur DeKalb Delaware Dubois Elkhart Fayette Floyd Fountain Franklin Fulton Gibson Grant Greene Hamilton Hancock Harrison Hendricks Henry Howard Huntington Jackson Jasper Jay Jefferson Jennings Johnson Knox Kosciusko LaGrange Lake LaPorte Lawrence Madison Marion: Center Township Marion: Other Marshall Martin Miami Monroe Montgomery Morgan Newton Noble Ohio Orange Owen Parke Perry Pike Porter Posey Pulaski Putnam Randolph Ripley Rush St. Joseph Scott Shelby Spencer Starke Steuben Sullivan Switzerland Tippecanoe Tipton Union Vanderburgh Vermillion Vigo Wabash Warren Warrick Washington Wayne Wells White Whitley
Other lists	Bridges National Historic Landmarks
Keeper of the Register History of the National Register of Historic Places Property types Historic district Contributing property

v t e Municipalities and communities of Adams County, Indiana, United States
County seat: Decatur
Cities	Berne Decatur	Map of Indiana highlighting Adams County
Towns	Geneva Monroe
Townships	Blue Creek French Hartford Jefferson Kirkland Monroe Preble Root St. Marys Union Wabash Washington
CDPs	Linn Grove Pleasant Mills Preble
Other communities	Ceylon Curryville‡ Honduras Magley Monmouth Peterson Rivare Salem Williams
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National Register of Historic Places listings in Adams County, Indiana

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