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Old Maps of Polk County, Minnesota for Metal Detecting

Plan your next treasure hunt with 108 historic maps of Polk County. 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 Polk County.

Polk County, MN maps

(108)
  1. 1918 Map of Angus
    1918 Map of Angus
    1918 Angus
    1918 Print · USGS
    Covers Polk County, including Angus, Roan, and other nearby areas
  4. 1918 Map of Hendrum
    1918 Map of Hendrum
    1918 Hendrum
    1918 Print · USGS
    Covers Polk County, including Halstad, Hendrum, and other nearby areas
  7. 1918 Map of Twin Valley
    1918 Map of Twin Valley
    1918 Twin Valley
    1918 Print · USGS
    Covers Polk County, including Ada, Twin Valley, and other nearby areas
  10. 1918 Map of Terrebonne
    1918 Map of Terrebonne
    1918 Terrebonne
    1918 Print · USGS
    Covers Polk County, including Plummer, Terrebonne, and other nearby areas
    2 unique versions available
  13. 1918 Map of Red Lake Falls
    1918 Map of Red Lake Falls
    1918 Red Lake Falls
    1918 Print · USGS
    Covers Polk County, including Red Lake Falls, Gentilly, and other nearby areas
  16. 1918 Map of Viking, 1943 Print
    1918 Map of Viking, 1943 Print
    1918 Viking
    1943 Print · USGS
    Covers Polk County, including Viking, Rosewood, and other nearby areas
  19. 1918 Map of Warren, 1943 Print
    1918 Map of Warren, 1943 Print
    1918 Warren
    1943 Print · USGS
    Covers Polk County, including Warren, Alvarado, and other nearby areas
  22. 1919 Map of Fosston
    1919 Map of Fosston
    1919 Fosston
    1919 Print · USGS
    Covers Polk County, including Fosston, Gonvick, and other nearby areas
  25. 1919 Map of Grit
    1919 Map of Grit
    1919 Grit
    1919 Print · USGS
    Covers Polk County, including Oklee, Garnes, and other nearby areas
  28. 1919 Map of Eldred
    1919 Map of Eldred
    1919 Eldred
    1919 Print · USGS
    Covers Polk County, including Climax, Nielsville, and other nearby areas
  31. 1919 Map of Winsor
    1919 Map of Winsor
    1919 Winsor
    1919 Print · USGS
    Covers Polk County, including Gully, Trail, and other nearby areas
    2 unique versions available
  34. 1919 Map of Valley, 1943 Print
    1919 Map of Valley, 1943 Print
    1919 Valley
    1943 Print · USGS
    Covers Polk County, including Erskine, Mentor, and other nearby areas
  37. 1919 Map of Beltrami, 1944 Print
    1919 Map of Beltrami, 1944 Print
    1919 Beltrami
    1944 Print · USGS
    Covers Polk County, including Crookston, Beltrami, and other nearby areas
  40. 1924 Map of Ada, 1944 Print
    1924 Map of Ada, 1944 Print
    1924 Ada
    1944 Print · USGS
    Covers Polk County, including Ada, Anthony, and other nearby areas
  43. 1934 Map of Grand Forks
    1934 Map of Grand Forks
    1934 Grand Forks
    1934 Print · USGS
    Covers Polk County, including Grand Forks, East Grand Forks, and other nearby areas
  46. 1934 Map of Grand Forks
    1934 Map of Grand Forks
    1934 Grand Forks
    1934 Print · USGS
    Covers Polk County, including Grand Forks, East Grand Forks, and other nearby areas
    2 unique versions available
  49. 1938 Map of Grand Forks
    1938 Map of Grand Forks
    1938 Grand Forks
    1938 Print · USGS
    Covers Polk County, including Grand Forks, East Grand Forks, and other nearby areas
    3 unique versions available
  52. 1952 Map of Red Lake Falls, 1954 Print
    1952 Map of Red Lake Falls, 1954 Print
    1952 Red Lake Falls
    1954 Print · USGS
    Covers Polk County, including Red Lake Falls, Gentilly, and other nearby areas
  55. 1952 Map of Grand Forks, 1967 Print
    1952 Map of Grand Forks, 1967 Print
    1952 Grand Forks
    1967 Print · USGS
    Covers Polk County, including Grand Forks, East Grand Forks, and other nearby areas
    3 unique versions available
  58. 1952 Map of Thief River Falls, 1967 Print
    1952 Map of Thief River Falls, 1967 Print
    1952 Thief River Falls
    1967 Print · USGS
    Covers Polk County, including Thief River Falls, Grafton, and other nearby areas
    2 unique versions available
  61. 1953 Map of Crookston, 1955 Print
    1953 Map of Crookston, 1955 Print
    1953 Crookston
    1955 Print · USGS
    Covers Polk County, including Crookston, Euclid, and other nearby areas
  64. 1954 Map of Bemidji, 1966 Print
    1954 Map of Bemidji, 1966 Print
    1954 Bemidji
    1966 Print · USGS
    Covers Polk County, including Bemidji, Fosston, and other nearby areas
    4 unique versions available
  67. 1955 Map of Warren, 1956 Print
    1955 Map of Warren, 1956 Print
    1955 Warren
    1956 Print · USGS
    Covers Polk County, including Warren, Alvarado, and other nearby areas
  70. 1956 Map of Thief River Falls
    1956 Map of Thief River Falls
    1956 Thief River Falls
    1956 Print · USGS
    Covers Polk County, including Thief River Falls, Grafton, and other nearby areas
  73. 1956 Map of Grand Forks
    1956 Map of Grand Forks
    1956 Grand Forks
    1956 Print · USGS
    Covers Polk County, including Grand Forks, East Grand Forks, and other nearby areas
Showing maps 1-25 of 108

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Frequently asked questions

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