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Oregon Historical County Records Guide

Multnomah County Records Inventory

Maps, Plans, and Drawings

1892-[ongoing]

Series provides a visual representation of the county and of physical structures constructed on county lands. Series includes maps, plans, and drawings that vary in size, scale, and date. Included are maps, plans, and drawings of counties and cities, election precincts, courthouses and other county buildings, cemeteries, rivers, Indian reservations, school districts, construction projects, and soil classifications. General road maps may be found in the series titled Road and Bridge Records. Technical road survey maps may be found in the series titled Road Maps and Survey Notes.

The Survey and Assessor Image Locator (SAIL) GIS mapping application includes searchable images of assessor maps, aerial photographs, survey records, subdivisions, condominiums, partitions, and government corner surveys. The information dates from circa 1851 to the present. The Oregon Historical Society has plans related to various county buildings such as the county courthouse as well as maps of Multnomah County.

Records at the Multnomah Building, Suite 175, Cartography Area:
[Assessor's Maps-colored-with notations], no. 0-3932, ca.1916 (2 volumes);
Columbia Slough Maps & Photos [Aerial-rolled], n.d. (1 cu.ft.);
Levy Code Maps, 1925-1980 (7 reels of microfilm);
Levy Code Maps for 1979-1980 Tax Roll, 1979-1980 ( 1 volume);
Lewis & Dryden's Atlas of Portland and Vicinity, 1892-1894 (1 volume);
Multnomah County Map [Assessor's], 1977 (1 volume); 1978 (1 volume);
P.G.E. R/W & Property Maps [Portland General Electric Right of Way], ca.1904-1961 (1 volume).

Records at the John B. Yeon Annex Building, Suite 116, Land Use Planning Office:
[Assessor's Maps], 1978-1979 (ca.300 maps);
[Land Use Survey Maps], 1986-1990 (ca.200 maps);
Multnomah County Wetlands Maps, ca.1988 (ca.20 maps).

Records at the John B. Yeon Annex Building, Suite 116, Land Use Planning Office, Map Room:
Address Maps [includes superseded maps], n.d. (ca.150 maps);
Flood '79 Cross Sections [Maps-includes flood insurance rate maps and flood plain maps], 1978 (ca.50 maps);
Flood [Insurance Rate Maps], 2009 (ca.50 maps);
Significant Wetlands [Aerial Photomaps], 1986 (ca.30 photomaps).

Records at the John B. Yeon Annex Building, Suite 116, Land Use Planning Office Counter Area:
[Land Ownership Maps], 1997 (ca.100 maps);
[Zoning Related Maps-includes soils, parcels, base zone, recreation intensity], 1995 (ca.200 maps).

Records at the John B. Yeon Annex Building, Suite 123, Surveyor's Office:
[Topographic Maps-United States Geological Survey], 1970-1986 (21 maps).

Records at the John B. Yeon Building, Multnomah County Archives:
[Assessor's Maps], 1925-1979 (ca.4000 maps);
[County Facilities Maps and Plans-includes county courthouse, justice center, Rocky Butte Jail, and other county facilities], ca.1905-ca.2000 (ca.600 maps and plans);
Lewis & Dryden's Atlas of Portland and Vicinity, n.d. (1 volume);
Map of Multnomah County Oregon [Assessor's Maps], ca.1924 (1 volume);
Misc. Election Maps [Miscellaneous-includes various maps related to election precincts], 1958-1982 (ca.8 cu.ft.);
[Planning Related Maps-includes miscellaneous soil type, habitat, etc.], ca.1955-ca.1995 (ca.50 maps);
Precinct Maps [rolled and flat], 1925, 1929 (.25 cu.ft.); 1950-1994 (50 cu.ft.);
[Scale Cloth Maps-Assessor's], 1906-1924 (1 volume); 1924 (1 volume);
[Vista House Plans-copies], 1915-1917 (ca.35 plans).

Records at the John B. Yeon Building, Multnomah County Archives, Microfilm Storage:
General Election Precinct Maps, 1953-1974 (11 reels of microfilm).

Records at the John B. Yeon Building, Multnomah County Records Center, Microfilm Cabinet:
Abstracts and Precinct Maps [Voting], 1976-1994 (11 reels of microfilm);
[Election Maps], 1968 (1 reel of microfilm);
[Election Precinct Maps], 1953-1968 (1 reel of microfilm);
[Election Precincts City of Portland Maps], 1960 (1 reel of microfilm);
[Precinct Maps], 1972 (1 reel of microfilm);
[Prec. Maps Gen.-Precinct Maps General Election], 1966 (1 reel of microfilm).

Records at the John B. Yeon Building, Engineering Records Room B4:
Multnomah County Map [Assessor's], 1972 (1 volume).

Records at the John B. Yeon Building, Room B12:
Railroad Drawings [includes right of way information-rolled], ca.1920-ca.1950 (ca.300 maps).

Records at the John B. Yeon Building, Room B14:
FEMA Flood Maps [Flood Insurance Rate Maps], 1982 (.25 cu.ft.).

Records at the John B. Yeon Building, Map Cabinet Near Room B15:
Banfield Light Rail [Contract Drawings-includes related records], 1982-1985 (5 cu.ft.);
Banfield LRT Improvements [Light Rail Transit Contract Drawings-includes related records], 1994-1995 (4 cu.ft.);
Westside Light Rail [Contract Records-includes plans], 1993 (.75 cu.ft.).

Records at the John B. Yeon Building, Vault Room B16:
As Builts [Multnomah County Maintenance and Operations Facility Plans-flat file], 1980 (ca.100 drawings);
COP BDY [City of Portland Boundary Maps], 1984 (ca.50 maps);
[Multnomah County Oregon-Assessors Map], n.d. (1 volume).

Records at the Multnomah County Bridge Section Office, Map Room:
Multnomah County Maps [Assessor's], ca.1925 (2 volumes);
[Multnomah County Maps-Assessor's], ca.1925 (1 volume).

Records at the Towne Storage Building, Multnomah County Circuit Court Records Area:
Permanent Files [River and Canal Maps-includes Sandy River and Johnson Creek-some document water rights], 1904-1909 (.20 cu.ft.).

Records at the Multnomah County Central Library:
[Assessor's Map of Multnomah County], 1951 (1 volume);
Boundaries of Election Precincts [Description Record-Multnomah County], 1914 (1 volume);
FIRM Flood Insurance Rate Map City of Portland, 1982-1986 (14 maps); 2004 (26 maps);
FIRM Flood Insurance Rate Map Multnomah County Unincorporated Areas, 1982-1986 (40 maps);
Five Legislative Districts of Multnomah County [Map], 1960 (1 map);
Metsker's Atlas of Multnomah County, Oregon, ca. 1927 (1 volume); ca.1930 (1 volume); 1936 (1 volume); 1944 (1 volume);
Multnomah County, Oregon Historical Sites Tour Guide and Map, 1979 (1 map);
Multnomah County Representative Districts [Map], 1971 (1 map);
Pittmon Map of Multnomah Co. Oregon, 1968 (1 map); 1987 (1 map); 2003 (1 map);
School Districts of Multnomah County [Map], 1915 (1 map).

Records at the Oregon Historical Society:
Mss. 3023 [Multnomah County Hospital Plans], 1920-1923 (68 drawings);
Mss. 3076 [Multnomah County Library Plans], 1912-1913 (36 drawings).

Records at the Genealogical Forum of Oregon, Research Library:
[Pittmon Map of Portland, Ore and Vicinity-Atlas], 1946 (1 volume).

Records at the Multnomah County Web Site:
Assessor's Map [includes levy code and donation land claim maps-searchable], n.d.-present (Internet);
Multnomah County Election Maps, n.d.-present (Internet);
Multnomah County Precinct Maps [Archived-includes districts], 2001-2011 (Internet);
Township Maps, n.d.-present (Internet).

Records at a Related Web Site:
Tax Assessment GIS Maps, n.d.-present (www.ormap.net).

Oregon Secretary of State • 136 State Capitol • Salem, OR 97310-0722

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