|Name|Location|City|Listing date|
|---|---|---|---|
|Branch County Courthouse Informational Site|31 Division Street|Coldwater|March 16, 1989|
|Bronson Public Library|207 Matteson Street|Bronson|September 28, 2000|
|Chicago Road Informational Designation|US-12 and Prairie River Road (Park 1.5 miles west of Bronson)|Bronson Township|September 17, 1957|
|City of Coldwater Informational Designation|City Park at intersection of US-12 and US-27|Coldwater|April 14, 1961|
|Edwin R. Clarke Library (Michigan Library Association)|12 East Chicago Street, between Division and Hudson streets|Coldwater|March 9, 1966|
|Dr. Hawley Harvey Crippen Home Site Informational Designation|66 North Monroe Street|Coldwater|August 21, 1987|
|East Chicago Street Historic District†|Chicago Street from Wright to Division streets, including the four parks at Division|Coldwater|July 26, 1974|
|First Presbyterian Church†|52 Marshall Street, NE corner of Marshall and Church streets|Coldwater|June 15, 1979|
|Abram C. Fisk House†|867 East Chicago Street|Coldwater|June 15, 1979|
|William P. Hurd House|601 North Broadway|Union City|July 17, 1981|
|Lanphere-Pratt House|90 Division Street|Coldwater|February 23, 1978|
|Henry A. Locke House|140 East Division Street|Sherwood|March 19, 1980|
|Governor Cyrus Gray Luce Homesite Informational Site|Northeast corner of Division and East Washington streets|Coldwater|August 15, 1975|
|Methodist Episcopal Church|126 Marshall Road|Coldwater|April 17, 1997|
|General John G. Parkhurst House|55 North Clay Street|Coldwater|June 15, 1979|
|Harriet Quimby Informational Designation|Branch County Memorial Airport|Coldwater|January 21, 1988|
|Quincy Township Public Library|11 North Main Street, just north of US-12|Quincy|April 25, 1988|
|State Public School at Coldwater|620 Marshall Road|Coldwater|May 13, 1981|
|Tibbits Opera House|14 South Hanchett Street|Coldwater|December 11, 1970|
|Union City Iron Furnace|M-60 near Waterworks Road|Union Township|February 14, 1963|
|Union City Methodist Episcopal Church|200 Ellen Street|Union City|September 19, 1991|
|Lucius M. Wing House†|27 South Jefferson Street, NE corner of S. Jefferson and East Pearl Street|Coldwater|October 17, 1974|
|John D. Zimmerman House|119 East High Street|Union City|September 21, 1983|

Question: how many sites were listed as historical before 1980?
Answer: 12