National Register of Historic Places listings in Mercer County, Illinois

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Location of Mercer County in Illinois

This is a list of the National Register of Historic Places listings in Mercer County, Illinois.

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Mercer County, Illinois, 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 11 properties and districts listed on the National Register in the county. Another property was once listed but has been removed.

This National Park Service list is complete through NPS recent listings posted September 8, 2017.[2]

Current listings[edit]

[3] Name on the Register Image Date listed[4] Location City or town Description
1 Commercial House
Commercial House
May 9, 1983
5th and Main St.
41°06′03″N 90°56′31″W / 41.100833°N 90.942083°W / 41.100833; -90.942083 (Commercial House)
2 Downtown Aledo Historic District Upload image June 7, 2016
100-200 blks. N. College, 100, 200, 300 blks. S. College, 100 blk. NW. 2nd, 200 blk. SW. 2nd Aves.
41°12′05″N 90°44′57″W / 41.201445°N 90.749246°W / 41.201445; -90.749246 (Downtown Aledo Historic District)
3 Gideon Ives House Upload image November 8, 2000
408 E. Jefferson St.
41°10′10″N 90°59′39″W / 41.169444°N 90.994167°W / 41.169444; -90.994167 (Gideon Ives House)
New Boston
4 Keithsburg Historic District
Keithsburg Historic District
May 8, 1986
Roughly bounded by Jackson, 5th, Washington, and 3rd Sts.
41°06′03″N 90°56′32″W / 41.100833°N 90.942222°W / 41.100833; -90.942222 (Keithsburg Historic District)
5 Lock and Dam No. 17 Historic District
Lock and Dam No. 17 Historic District
March 10, 2004
173 Lock and Dam Rd.
41°11′31″N 91°03′29″W / 41.191944°N 91.058056°W / 41.191944; -91.058056 (Lock and Dam No. 17 Historic District)
New Boston
6 Mercer County Courthouse
Mercer County Courthouse
June 17, 1982
SE 3rd St. (IL 17)
41°11′58″N 90°44′55″W / 41.199444°N 90.748611°W / 41.199444; -90.748611 (Mercer County Courthouse)
7 Mercer County Fairgrounds
Mercer County Fairgrounds
May 2, 1997
12th Ave., SW., .5 mi. S of jct. with IL 17
41°11′30″N 90°45′52″W / 41.191667°N 90.764444°W / 41.191667; -90.764444 (Mercer County Fairgrounds)
8 Mercer County Jail
Mercer County Jail
July 25, 1997
309 S. College Ave.
41°11′57″N 90°44′58″W / 41.199167°N 90.749444°W / 41.199167; -90.749444 (Mercer County Jail)
9 Sherrard Banking Company
Sherrard Banking Company
February 16, 1996
314 Third St.
41°19′08″N 90°30′20″W / 41.318889°N 90.505556°W / 41.318889; -90.505556 (Sherrard Banking Company)
10 James S. Thompson House
James S. Thompson House
December 3, 2002
804 North St.
41°10′27″N 90°59′46″W / 41.17425°N 90.996°W / 41.17425; -90.996 (James S. Thompson House)
New Boston
11 Levi Willits House
Levi Willits House
April 20, 1995
202 Main St.
41°10′07″N 90°59′59″W / 41.168611°N 90.999722°W / 41.168611; -90.999722 (Levi Willits House)
New Boston

Former listing[edit]

[3] Name on the Register Image Date listed Date removed Location City or town Summary
1 United Presbyterian Church Upload image November 7, 1980
July 17, 1984 Main and 8th Sts.


  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. For about 1% of NRIS original coordinates, experience has shown that one or both coordinates are typos or otherwise extremely far off; some corrections may have been made. A more subtle problem causes many locations to be off by up to 150 yards, depending on location in the country: most NRIS coordinates were derived from tracing out latitude and longitudes off of USGS topographical quadrant maps created under the North American Datum of 1927, which differs from the current, highly accurate WGS84 GPS system used by most on-line maps. Chicago is about right, but NRIS longitudes in Washington are higher by about 4.5 seconds, and are lower by about 2.0 seconds in Maine. Latitudes differ by about 1.0 second in Florida. Some locations in this table may have been corrected to current GPS standards.
  2. ^ "National Register of Historic Places: Weekly List Actions". National Park Service, United States Department of the Interior. Retrieved on September 8, 2017.
  3. ^ a b Numbers represent an ordering by significant words. Various colorings, defined here, differentiate National Historic Landmarks and historic districts from other NRHP buildings, structures, sites or objects.
  4. ^ 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.

See also[edit]