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Old Maps of Portland, Iowa for Metal Detecting

Plan your next treasure hunt with 6 historic maps of Portland. Find old homesites, ghost towns, trails, and gathering spots that may be lost to time — perfect for identifying promising metal detecting locations.

  • Locate forgotten sites: Uncover places like long-lost settlements, abandoned rail lines, or gathering spots.
  • Plan better hunts: Use map overlays combined with LiDAR or satellite views to narrow in on historically rich areas.
  • Made for detectorists: Thousands of hobbyists use these maps to discover relics, coins, and hidden history.

Use these historic maps to boost your research and find new opportunities beneath the surface of Portland.

Portland, IA maps

(6)
  1. 1954 Map of Mason City, 1967 Print
    1954 Map of Mason City, 1967 Print
    1954 Mason City
    1967 Print · USGS
    Covers Portland, including Rochester, Mason City, and other nearby areas
    2 unique versions available
  4. 1957 Map of Mason City
    1957 Map of Mason City
    1957 Mason City
    1957 Print · USGS
    Covers Portland, including Rochester, Mason City, and other nearby areas
  7. 1958 Map of Mason City
    1958 Map of Mason City
    1958 Mason City
    1958 Print · USGS
    Covers Portland, including Rochester, Mason City, and other nearby areas
  10. 1959 Map of Mason City, 1961 Print
    1959 Map of Mason City, 1961 Print
    1959 Mason City
    1961 Print · USGS
    Covers Portland, including Mason City, Nora Springs, and other nearby areas
  13. 1959 Map of Nora Springs, 1966 Print
    1959 Map of Nora Springs, 1966 Print
    1959 Nora Springs
    1966 Print · USGS
    Covers Portland, including Mason City, Nora Springs, and other nearby areas
  16. 1985 Map of Mason City
    1985 Map of Mason City
    1985 Mason City
    1985 Print · USGS
    Covers Portland, including Mason City, Clear Lake, and other nearby areas
    2 unique versions available
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Frequently asked questions

  • What are the different types of historical maps available for Portland?
  • What is the oldest map of Portland?
  • Where can I purchase historical maps of Portland for my home or office?
  • Where can I download high-res historical maps of Portland?
  • Are there historical topographic maps available for Portland?
  • Is there historical aerial imagery available for Portland?
  • Where are historical maps of Portland sourced from?

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