There are 265 properties and districts listed on the National Register in the county, including 9 National Historic Landmarks. Because Indianapolis is coextensive with Marion County, properties are listed by township rather than by city or town. Center Township is the location of 190 of these properties and districts, including 6 of the National Historic Landmarks; these properties and districts are listed here. Properties and districts in Marion County's other townships are listed separately. The Indianapolis Park and Boulevard System, a historic district, is primarily in Center Township but extends into three other townships, and is therefore included on both lists. Another ten properties, including eight in Center Township, were once listed but have been removed.
This National Park Service list is complete through NPS recent listings posted July 19, 2024.[2]
^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.
^ a bNumbers 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.
^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.
^Specific address derived from Hermansen, David R., and Wesley I. Shank. National Register of Historic Places Inventory/Nomination: L.S. Ayres Annex Warehouse. National Park Service, 1971-08-01. The NRIS lists the building simply as being on Maryland St., without indication as to its east/west direction or to its street address.
^Dobbins, Lindy (January 25, 2011). "Historic building demolished after fire". wthr.com. Indianapolis, Indiana. Retrieved January 26, 2011.
