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Oregon · County atlas

Multnomah County map

Explore the boundary, see its place in Oregon, and download a map for your next project.

FIPS 410512025 Census boundariesFree PDF · PNG · SVG
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Boundary map 100%
Boundary map of Multnomah County, Oregon Multnomah County
2025 U.S. Census boundaries. Detailed county outline. Zoom or expand for a closer look.
431 sq miLand area
34 sq miWater area
7.3%Share of area that is water
41051Five-digit county FIPS code

Download this map

Choose a format for printing, editing, or sharing. All downloads are free.

SVG

SVG is editable vector artwork. PNG is a high-resolution image. PDF uses landscape Letter pages, with a separate key when needed.

Downloads contain the complete boundary map, independent of zoom. Boundary data (GeoJSON) · Reuse with source credit.

Roads, terrain & aerial imagery

Explore Multnomah County, Oregon with a county boundary overlay. Choose a view to load the interactive map.

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Street names, terrain, or aerial photography with the county boundary in view.

Backgrounds load from OpenStreetMap or USGS only when selected. Imagery dates and detail vary by location.

Multnomah County at a glance

Multnomah County is one of 36 county-level areas in Oregon. Its 431 square miles of land place it at position 36 among those areas by land size. Including 34 square miles of water, its mapped total area is approximately 465 square miles.

Full Census nameMultnomah County
StateOregon
FIPS / GEOID41051
Boundary vintage2025
Outline source scale1:500,000

Counties along the boundary

These county-level areas share a line segment with Multnomah County in the Census cartographic boundary dataset. Select one to continue exploring.

Using this map

Choose a blank outline for coloring or a labelled download for reference. SVG preserves editable boundary artwork, PNG works in slides, and PDF provides a ready-to-print landscape page. Use the full state map to compare surrounding counties.

Roads, topography, and aerial imagery are available in the interactive background viewer. Those backgrounds have their own dates and sources; the red boundary overlay follows the 2025 Census geography.

Sources and precision

U.S. Census Bureau, 2025 Cartographic Boundary Files. The county outline uses the 1:500,000 file; location maps and interactive overlays use 1:5,000,000. Areas come from ALAND and AWATER, converted to square miles and rounded to one decimal place. Neighbor links are calculated from shared boundary segments, not from point-only contacts. Generalized maps are for geographic reference, not parcel or legal boundary determination. Full methodology.