The following is a list of Registered Historic Places in Ionia County, Michigan.
          This National Park Service list is complete through NPS recent listings posted February 23, 2024.^[1]

[2]	Name on the Register[3]	Image	Date listed[4]	Location	City or town	Description
1	Alvah N. Belding Memorial Library		May 21, 1993 (#93000427)	302 E. Main St. 43°05′53″N 85°13′34″W / 43.098056°N 85.226111°W / 43.098056; -85.226111 (Alvah N. Belding Memorial Library)	Belding
2	John C. Blanchard House		July 24, 1974 (#74002346)	253 E. Main St. 42°58′58″N 85°03′28″W / 42.982778°N 85.057778°W / 42.982778; -85.057778 (John C. Blanchard House)	Ionia
3	Hall-Fowler Memorial Library	More images	May 6, 1971 (#71000398)	126 E. Main St. 42°59′01″N 85°03′44″W / 42.983611°N 85.062222°W / 42.983611; -85.062222 (Hall-Fowler Memorial Library)	Ionia
4	Ionia County Courthouse		August 9, 1979 (#79001155)	E. Main St. 42°59′00″N 85°03′48″W / 42.983333°N 85.063333°W / 42.983333; -85.063333 (Ionia County Courthouse)	Ionia	see Claire Allen for more info
5	Ionia Downtown Commercial Historic District	More images	September 13, 1984 (#84001437)	Roughly W. Main and Washington Sts., from Dexter to Library Sts. 42°58′57″N 85°04′01″W / 42.9825°N 85.066944°W / 42.9825; -85.066944 (Ionia Downtown Commercial Historic District)	Ionia
6	Ionia Historic District	More images	September 13, 1984 (#84001443)	Roughly bounded by Summit, Pleasant, Jefferson and Main Sts. 42°59′02″N 85°03′39″W / 42.983889°N 85.060833°W / 42.983889; -85.060833 (Ionia Historic District)	Ionia
7	Lovell-Webber House	More images	July 30, 1974 (#74000988)	111 E. Main St. 42°59′01″N 85°03′53″W / 42.983611°N 85.064722°W / 42.983611; -85.064722 (Lovell-Webber House)	Ionia	This House has been demolished.[5]
8	Muir Church of Christ		February 17, 1983 (#83000852)	138 Garden St. 42°59′59″N 84°56′28″W / 42.999722°N 84.941111°W / 42.999722; -84.941111 (Muir Church of Christ)	Muir
9	Pere Marquette Railway Belding Depot		March 28, 1997 (#97000282)	100 Depot St. 43°05′55″N 85°13′46″W / 43.098611°N 85.229444°W / 43.098611; -85.229444 (Pere Marquette Railway Belding Depot)	Belding
10	Portland Downtown Historic District	More images	May 18, 2005 (#05000153)	Kent and Maple Sts. betw. Grand River Ave. and Academy St.[6] 42°52′09″N 84°54′11″W / 42.869167°N 84.903056°W / 42.869167; -84.903056 (Portland Downtown Historic District)	Portland
11	Portland First Congregational Church	More images	December 27, 1984 (#84000542)	421 E. Bridge St. 42°52′05″N 84°54′00″W / 42.868°N 84.9°W / 42.868; -84.9 (Portland First Congregational Church)	Portland	The church was severely damaged by a tornado on June 22, 2015 and has been demolished. In 2016 the church completed a rebuilding project that was true to the original style.[7]
12	Portland High School		August 8, 2016 (#16000508)	306 Brush St. 42°51′58″N 84°54′15″W / 42.866094°N 84.904148°W / 42.866094; -84.904148 (Portland High School)	Portland
13	Richardson Silk Mill		September 26, 1985 (#85002496)	101 Front St. 43°05′55″N 85°14′02″W / 43.098611°N 85.233889°W / 43.098611; -85.233889 (Richardson Silk Mill)	Belding
14	Sessions Schoolhouse		February 11, 1985 (#85000278)	Riverside Dr. 42°57′18″N 85°07′59″W / 42.955°N 85.133056°W / 42.955; -85.133056 (Sessions Schoolhouse)	Ionia
15	St. John the Baptist Catholic Church Complex		September 24, 2001 (#01001019)	324 S. Washington Ave. 43°05′32″N 84°50′50″W / 43.092222°N 84.847222°W / 43.092222; -84.847222 (St. John the Baptist Catholic Church Complex)	Hubbardston
16	William H. VanderHeyden House		December 28, 1990 (#90001959)	926 W. Main St. 42°58′52″N 85°04′46″W / 42.981111°N 85.079444°W / 42.981111; -85.079444 (William H. VanderHeyden House)	Ionia