| Name | Styles | Significance | Periods |
|---|
Daniel Nelson House and Barn
(SR 1) | No Style Listed | engineering, exploration, settlement, architecture | 1850-1874 |
Dr. William E. and Ethel Rosenberger Berry House
(116 Rosenberger Ave.) | Colonial Revival | education | 1925-1949, 1900-1924 |
Dr. William H. and Mae R. Klose House
(1002 Penn Blvd.) | Colonial Revival | education | 1925-1949, 1900-1924 |
E. H. Gibbs House
(William Penn College Campus, N. Market Extension) | Classical Revival | architecture | 1900-1924 |
Forest Cemetery Entrance
(Jct. of N. 9th St. and J Ave. E.) | No Style Listed | architecture | 1900-1924 |
Iowa Yearly Meeting House - College Avenue Friends Church
(912 N. C St.) | Colonial Revival | religion, architecture | 1925-1949, 1900-1924 |
John H. Shoemake House
(116 2nd Ave., W.) | Federal, Other | architecture | 1850-1874 |
John K. Voorhees House
(NW of Oskaloosa on IA 163) | Italianate, Second Empire | engineering, architecture | 1850-1874 |
Lake Keomah State Park, Bathhouse - Lodge Area (Area A)
(Off IA 371 S of jct. with IA 92) | Other | social history, landscape architecture, politics, government, conservation, entertainment, recreation, architecture | 1925-1949 |
Lake Keomah State Park, Erosion Control Area (Area B)
(Off IA 371 S of jct. with IA 92) | Other | conservation, entertainment, recreation, politics, government, landscape architecture, social history | 1925-1949 |
Lincoln School
(911 B Ave. W.) | Late 19th And 20th Century Revivals | architecture | 1900-1924 |
Mahaska County Courthouse
(Market St. and 2nd Ave.) | Romanesque, Art Deco | architecture | 1925-1949, 1875-1899 |
Maj. James W. McMullin House
(403 1st Ave., E.) | Queen Anne | architecture | 1875-1899 |
Oskaloosa City Hall
(Jct. of S. Market St. and 2nd Ave. E., NE corner) | Renaissance | architecture | 1900-1924 |
Oskaloosa City Park and Band Stand
(City Park) | Mixed (More Than 2 Styles From Different Periods) | architecture, performing arts | 1900-1924, 1825-1849 |
Oskaloosa City Square Commercial Historic District
(Roughly bounded by A Ave. E, N. and S. Second St., Second Ave. E, and N. and S. A St.) | Romanesque, Italianate, Early Commercial | architecture | 1850-1874, 1900-1924, 1925-1949, 1875-1899 |
Oskaloosa Fire Station
(109--111 2nd Ave. E.) | Renaissance | architecture | 1900-1924 |
Oskaloosa Monthly Meeting of Friends Parsonage
(910 N. C St.) | Prairie School | architecture, religion | 1925-1949, 1900-1924 |
Paradise Block Historic District
(402, 406, 408, 410, 414, 418 and 510--714 High Ave. E.) | Late Victorian, Late 19th And Early 20th Century American Movements, Late 19th And 20th Century Revivals | architecture | 1850-1874, 1900-1924, 1875-1899 |
Phil Hoffman House
(807 High Ave. E.) | Shingle Style | architecture | 1925-1949, 1900-1924 |
Pierson - Betts House
(815 Penn Blvd.) | Colonial Revival | education, social history | 1925-1949 |
Rock Island Passenger Depot
(Rock Island Ave. between 1st and 2nd Sts.) | Stick, Eastlake | architecture | 1875-1899 |
Seeberger- Loring- Kilburn House
(509 High Ave., E.) | Italianate | architecture | 1875-1899, 1850-1874 |
Smith- Johnson House
(713 High Ave., E.) | No Style Listed | architecture | 1850-1874 |
St. James Episcopal Church
(Jct. of 1st Ave. and S. 3rd St., SW corner) | Late Gothic Revival | architecture | 1900-1924 |
Stock Judging Pavilion
(Southern Iowa Fairgrounds) | Other | engineering, education | 1900-1924 |
Thomas J. Conover House
(1010 N. Market St.) | Colonial Revival | education | 1925-1949 |
W.A. McNeill House
(1282 C Ave. East) | Colonial Revival, Mission, Spanish Revival | architecture | 1900-1924 |
William A. and Ida C. Johnson House
(307 College Ave.) | Queen Anne | education | 1925-1949, 1900-1924 |
