Question: What year did the historic place on the National Register of Historic Places open that is in the city within Floyd County with a population of 307 ?

text: National Register of Historic Places listings in Floyd County, Iowa
Current listings

This is a list of the National Register of Historic Places listings in Floyd County, Iowa. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Floyd County, Iowa, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map. There are 20 properties and districts listed on the National Register in the county.
Name on the Register Date listed Location City or town
1 Brooks Round Barn June 30 , 1986 ( # 86001429 ) West of U.S. Route 218 42°57′00″N 92°35′04″W / 42.95°N 92.584444°W / 42.95 ; -92.584444 ( Brooks Round Barn ) Nashua
2 Central Park-North Main Street Historic District August 10 , 1976 ( # 76000771 ) N. Main St. and N. Jackson St. 43°04′06″N 92°40′43″W / 43.068333°N 92.678611°W / 43.068333 ; -92.678611 ( Central Park-North Main Street Historic District ) Charles City
3 Charles City Junior-Senior High School September 5 , 2017 ( # 100001567 ) 500 N. Grand Ave. 43°04′05″N 92°40′20″W / 43.067933°N 92.672092°W / 43.067933 ; -92.672092 ( Charles City Junior-Senior High School ) Charles City
4 Cook Farm June 18 , 1979 ( # 79000895 ) South of Charles City on U.S. Route 218 43°01′51″N 92°38′41″W / 43.030833°N 92.644722°W / 43.030833 ; -92.644722 ( Cook Farm ) Charles City
5 A.B.C . Dodd House May 22 , 1978 ( # 78001220 ) 310 3rd Ave. 43°03′55″N 92°40′06″W / 43.065278°N 92.668333°W / 43.065278 ; -92.668333 ( A.B.C . Dodd House ) Charles City
6 Dr. Salsbury 's Laboratories , Main Office and Production Laboratory Building March 7 , 1996 ( # 96000235 ) 500 Gilbert St. 43°03′47″N 92°40′44″W / 43.063056°N 92.678889°W / 43.063056 ; -92.678889 ( Dr. Salsbury 's Laboratories , Main Office and Production Laboratory Building ) Charles City
7 Floyd County Court House August 28 , 2003 ( # 03000816 ) 101 S. Main St. 43°03′56″N 92°40′54″W / 43.065556°N 92.681667°W / 43.065556 ; -92.681667 ( Floyd County Court House ) Charles City
8 Charles Walter Hart House January 25 , 1980 ( # 80001450 ) 800 3rd Ave. 43°03′55″N 92°39′38″W / 43.065278°N 92.660556°W / 43.065278 ; -92.660556 ( Charles Walter Hart House ) Charles City
9 Hawkeye Street Underpass June 25 , 1998 ( # 98000777 ) South Hawkeye St. under the railroad line 43°08′14″N 93°00′34″W / 43.137222°N 93.009306°W / 43.137222 ; -93.009306 ( Hawkeye Street Underpass ) Nora Springs
10 Lucius and Maria Clinton Lane House April 24 , 1995 ( # 95000384 ) 2379 Timber Ave. 43°00′45″N 92°39′15″W / 43.0125°N 92.654167°W / 43.0125 ; -92.654167 ( Lucius and Maria Clinton Lane House ) Charles City
11 Main Street Bridge March 12 , 1999 ( # 99000311 ) Main St. over the Cedar River 43°03′58″N 92°40′48″W / 43.066111°N 92.68°W / 43.066111 ; -92.68 ( Main Street Bridge ) Charles City
12 Marble Rock Bank November 10 , 1982 ( # 82000407 ) 313 Bradford St. 42°57′55″N 92°52′04″W / 42.965278°N 92.867778°W / 42.965278 ; -92.867778 ( Marble Rock Bank ) Marble Rock
13 Alvin Miller House November 16 , 1978 ( # 78001221 ) 1107 Court St. 43°04′05″N 92°41′04″W / 43.068056°N 92.684444°W / 43.068056 ; -92.684444 ( Alvin Miller House ) Charles City
14 Charles Henry Parr House January 24 , 1980 ( # 80001451 ) 100 W. Hulin St. 43°04′23″N 92°40′56″W / 43.073056°N 92.682222°W / 43.073056 ; -92.682222 ( Charles Henry Parr House ) Charles City
15 River Street Bridge June 25 , 1998 ( # 98000778 ) River St. over a drainage ditch 42°58′00″N 92°52′10″W / 42.966667°N 92.869306°W / 42.966667 ; -92.869306 ( River Street Bridge ) Marble Rock
16 Rockford Mill July 28 , 1983 ( # 83000358 ) Shell Rock River at 4th and Main St. 43°03′02″N 92°56′31″W / 43.050556°N 92.941944°W / 43.050556 ; -92.941944 ( Rockford Mill ) Rockford
17 Sherman Nursery Company Historic District November 12 , 2014 ( # 14000905 ) 1300 Grove st. 43°03′54″N 92°41′21″W / 43.065°N 92.689167°W / 43.065 ; -92.689167 ( Sherman Nursery Company Historic District ) Charles City
18 Spotts Round Barn June 30 , 1986 ( # 86001430 ) Iowa Highway 14 43°03′33″N 92°43′29″W / 43.059056°N 92.724694°W / 43.059056 ; -92.724694 ( Spotts Round Barn ) Charles City
19 Tyden Farm No . 6 Farmstead Historic District June 11 , 2009 ( # 09000401 ) 1145 300th St. 42°55′23″N 92°59′48″W / 42.923056°N 92.996667°W / 42.923056 ; -92.996667 ( Tyden Farm No . 6 Farmstead Historic District ) Dougherty
20 Wildwood Park Historic District September 25 , 1998 ( # 98001205 ) 1 Wildwood Rd . 43°03′46″N 92°41′37″W / 43.062778°N 92.693611°W / 43.062778 ; -92.693611 ( Wildwood Park Historic District ) Charles City