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County · code 27021

Cass CountyMinnesota

Cass County is a county in Minnesota with its seat in Walker, created in 1851. The county was named after Lewis Cass.

  • Founded1851
  • County seatWalker
  • Named forLewis Cass
  • Land area2,021 sq mi + 393 sq mi water
  • Population30,066 2020 Census
  • Parcels mapped51,700 checked 16 October 2026
Open the free map Click any parcel in Cass County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

Crow WingHubbardWadenaItascaMorrisonAitkinToddBeltrami Walker Census outline · seat marked

Where it is

Cass on the map of Minnesota

Minnesota has 87 counties and county equivalents, each with its own records office. Shapes with a page are links.

Aitkin CountyAnoka CountyBecker CountyBeltrami CountyBenton CountyBig Stone CountyBlue Earth CountyBrown CountyCarlton CountyCarver CountyChippewa CountyChisago CountyClay CountyClearwater CountyCook CountyCottonwood CountyCrow Wing CountyDakota CountyDodge CountyDouglas CountyFaribault CountyFillmore CountyFreeborn CountyGoodhue CountyGrant CountyHennepin CountyHouston CountyHubbard CountyIsanti CountyItasca CountyJackson CountyKanabec CountyKandiyohi CountyKittson CountyKoochiching CountyLac qui Parle CountyLake CountyLake of the Woods CountyLe Sueur CountyLincoln CountyLyon CountyMcLeod CountyMahnomen CountyMarshall CountyMartin CountyMeeker CountyMille Lacs CountyMorrison CountyMower CountyMurray CountyNicollet CountyNobles CountyNorman CountyOlmsted CountyOtter Tail CountyPennington CountyPine CountyPipestone CountyPolk CountyPope CountyRamsey CountyRed Lake CountyRedwood CountyRenville CountyRice CountyRock CountyRoseau CountySt. Louis CountyScott CountySherburne CountySibley CountyStearns CountySteele CountyStevens CountySwift CountyTodd CountyTraverse CountyWabasha CountyWadena CountyWaseca CountyWashington CountyWatonwan CountyWilkin CountyWinona CountyWright CountyYellow Medicine CountyCass County Cass
Counties of Minnesota · Cass highlighted

History

Formed in 1851 from Dakota County, Mahkahto County, Pembina County, Kittson County, Wahnahta County and Benton County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Cass County was created on May 1, 1851, from Dakota, Mahkahto, Pembina, Kittson, Wahnahta, and Benton counties. The county experienced significant boundary changes over the next two decades, losing land to the creation of multiple new counties including Stearns, Todd, Wright, Douglas, Becker, Otter Tail, Wadena, Polk, and Pope, while also gaining some territory from Todd and from eliminated non-county areas.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1851
    Cass County created Cass created from Dakota, Mahkahto, Pembina (now Kittson), and Wahnahta (extinct); Cass not fully organized, attached to Benton "for judicial purposes."
    from Dakotafrom Mahkahtofrom Pembinafrom Kittsonfrom Wahnahtafrom Benton
    · Minn. Terr. Rev. Stat. 1851, ch. 1, secs. 9, 13, 18/pp. 31-32
  2. 1855
    Lost territory Cass lost to the creation of Davis (extinct), Stearns, Todd, and Wright.
    to Davisto Stearnsto Toddto Wright
    · Minn. Terr. Laws 1855, ch. 6, sec. 16-18, 25/p. 26-28
  3. 1858
    Lost territory Cass lost to the creation of Douglas. Change divided Cass into two parts.
    to Douglas
    · Minn. Laws 1857-1858, spec., ch. 74, secs. 1-2/p. 215
  4. 1858
    Lost territory Cass lost to the creation of Becker and Otter Tail. Cass detached from Stearns, attached to Crow Wing "for judicial purposes," and remained divided into two parts.
    to Beckerto Otter Tailto Stearnsto Crow Wing
    · Minn. Laws 1857-1858, spec., ch. 34, secs. 1, 3-4/pp. 144-145; ch. 39, sec. 1/p. 151
  5. 1858
    Gained territory Cass implicitly gained from Todd, lost to the creation of Wadena. Cass remained divided into two parts.
    from Toddfrom Wadena
    · Minn. Laws 1857-1858, spec., ch. 179, secs. 1-2/pp. 448-449
Show all 31 changes (26 more)
  1. 1851
    Cass County created Cass created from Dakota, Mahkahto, Pembina (now Kittson), and Wahnahta (extinct); Cass not fully organized, attached to Benton "for judicial purposes."
    from Dakotafrom Mahkahtofrom Pembinafrom Kittsonfrom Wahnahtafrom Benton
    · Minn. Terr. Rev. Stat. 1851, ch. 1, secs. 9, 13, 18/pp. 31-32
  2. 1855
    Lost territory Cass lost to the creation of Davis (extinct), Stearns, Todd, and Wright.
    to Davisto Stearnsto Toddto Wright
    · Minn. Terr. Laws 1855, ch. 6, sec. 16-18, 25/p. 26-28
  3. 1855
    Changed Cass detached from Benton, attached to Stearns "for judicial purposes."
    BentonStearns
    · Minn. Terr. Laws 1855, ch. 4, secs. 1, 6/pp. 18-19
  4. 1858
    Lost territory Cass lost to the creation of Douglas. Change divided Cass into two parts.
    to Douglas
    · Minn. Laws 1857-1858, spec., ch. 74, secs. 1-2/p. 215
  5. 1858
    Lost territory Cass lost to the creation of Becker and Otter Tail. Cass detached from Stearns, attached to Crow Wing "for judicial purposes," and remained divided into two parts.
    to Beckerto Otter Tailto Stearnsto Crow Wing
    · Minn. Laws 1857-1858, spec., ch. 34, secs. 1, 3-4/pp. 144-145; ch. 39, sec. 1/p. 151
  6. 1858
    Gained territory Cass implicitly gained from Todd, lost to the creation of Wadena. Cass remained divided into two parts.
    from Toddfrom Wadena
    · Minn. Laws 1857-1858, spec., ch. 179, secs. 1-2/pp. 448-449
  7. 1858
    Lost territory Cass lost to creation of Polk.
    to Polk
    · Minn. Laws 1857-1858, spec., ch. 67, secs. 1-2, 4/pp. 183-184
  8. 1858
    Changed Cass detached from Crow Wing, attached to Morrison "for judicial and other purposes."
    Crow WingMorrison
    · Minn. Laws 1857-1858, gen., ch. 67, sec. 2/p. 157
  9. 1860
    Lost territory Cass lost to Becker.
    to Becker
    · Minn. Laws 1859-1860, spec., ch. 33, secs. 5-6/p. 62
  10. 1862
    Lost territory Cass lost to the creation of Pope. Change reduced Cass to a single part.
    to Pope
    · Minn. Laws 1862, spec., ch. 22, sec. 4/p. 258
  11. 1866
    Gained territory Cass gained all of Non-County Area 9, which was eliminated; Cass detached from Morrison, attached to Crow Wing "for judicial purposes."
    from Morrisonfrom Crow Wing
    · Minn. Gen. Stat. 1866, ch. 64, title 1, secs. 1-74/pp. 96-112, title 4, sec. 33/p. 419
  12. 1867
    Gained territory Cass gained small area from Todd.
    from Todd
    · Minn. Gen. Stat. 1866, ch. 8, title 1, secs. 42, 66/pp. 105, 111; Minn. Laws 1867, gen., ch. 116, secs. 1-2/pp. 162-163
  13. 1867
    Changed Cass detached from Crow Wing, attached to Morrison "for judicial and record purposes."
    Crow WingMorrison
    · Minn. Laws 1867, gen., ch. 113, secs. 1-3/pp. 159-160
  14. 1871
    Lost territory Cass lost to Aiken (now Aitkin), and lost small areas (along the river) to Itasca.
    to Aikento Aitkinto Itasca
    · Minn. Laws 1871, gen., ch. 96, secs. 1-2, 4/pp. 161-162
  15. 1871
    Changed Cass detached from Morrison, attached to Crow Wing "for record and judicial purposes.".
    MorrisonCrow Wing
    · Minn. Laws 1871, spec., ch. 75, secs. 1-3/p. 285
  16. 1872
    Changed Cass organized for county government. · Minn. Laws 1872, gen., ch. 79, sec. 1/p. 145
  17. 1876
    Changed Cass's organization for county government repealed and its attachment to Crow Wing "for record and judicial purposes" confirmed.
    Crow Wing
    · Minn. Laws 1876, spec., ch. 208, secs. 1-2/pp. 285-287
  18. 1883
    Lost territory Cass lost to the creation of Hubbard.
    to Hubbard
    · Minn. Laws 1883, gen., ch. 78, secs. 1, 4/p. 108
  19. 1883
    Changed Wadena authorized to gain the five adjacent townships of Cass, dependent upon local referendum that failed (no change).
    Wadena
    · Minn. Gen. Stat. 1894, ch. 8, title 1, sec. 612/p. 178; Minn. Laws 1883, gen., ch. 79, secs. 1-3/p. 109
  20. 1883
    Changed Crow Wing authorized to gain from Cass and exchange with Morrison, dependent upon local referendum; change not effected.
    Crow WingMorrison
    · Minn. Gen. Stat. 1894, ch. 8, title 1, sec. 549/p. 158; Minn. Laws 1883, gen., ch. 80, secs. 1-3, 5-6/pp. 110-111
  21. 1885
    Changed Crow Wing authorized to gain area north of Mississippi River from Cass, dependent upon local referendum; change not effected.
    Crow Wing
    · Minn. Gen. Stat. 1894, ch. 8, title 1, sec. 549/p. 158; Minn. Laws 1885, gen., ch. 203, secs. 1-3/pp. 274-275
  22. 1887
    Changed Cass authorized to gain from Morrison the area north of Township 131, dependent upon local referendum and other conditions; change not effected.
    Morrison
    · Minn. Gen. Stat. 1894, ch. 8, title 1, sec. 583/p. 169; Minn. Laws 1887, gen., ch. 260, secs. 1-5/p. 379
  23. 1887
    Lost territory Cass lost to Itasca; lost small area to Aitkin.
    to Itascato Aitkin
    · Minn. Laws 1887, gen., ch. 116-117, sec. 1/pp. 201-202
  24. 1888
    Lost territory Cass lost to Crow Wing; Cass remained attached to Crow Wing.
    to Crow Wing
    · Minn. Laws 1887, gen., ch. 118, secs. 1-3/pp. 203-204
  25. 1889
    Exchanged territory Cass exchanged with Beltrami.
    with Beltrami
    · HRS Minn., Beltrami, 8-9; Minn. Laws 1889, gen., ch. 75, secs. 1-2/p. 188
  26. 1891
    Changed Cass authorized to gain from Morrison the area north of Township 131, dependent upon local referendum that failed (no change).
    Morrison
    · HRS Minn., Morrison, 17; Minn. Gen. Stat. 1894, ch. 8, title 1, sec. 583/p. 169; Minn. Laws 1891, gen., ch. 148, secs. 1-2, 5/pp. 285-286
  27. 1895
    Lost territory Cass lost to Hubbard.
    to Hubbard
    · HRS Minn., Hubbard, 8
  28. c. 1896
    Lost territory Cass lost to Crow Wing.
    to Crow Wing
    · Crow Wing Co. Hist. Soc., corres., Sep. 1998; Heilbron, "Variations," 490-491; HRS Minn., Cass, 8
  29. 1897
    Changed Cass fully organized for county government and judicial purposes, detached from Crow Wing.
    Crow Wing
    · Minn. Laws 1897, gen., ch. 99, secs. 1, 4/pp. 122-124
  30. 1898
    Gained territory Cass gained from Crow Wing when state supreme court ruled boundary change of c. 20 February 1896 unconstitutional.
    from Crow Wing
    · Heilbron, "Variations," 490-491; HRS Minn., Cass, 8; Minn. Reports, 66:519- 535
  31. 1898
    Lost territory Cass lost to Wadena.
    to Wadena
    · Minn. Laws 1897, gen., ch. 396, secs. 1-4/pp. 649-650

Land and parcels

What the maps cover in Cass

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Cass by the Census

Population
30,066 2020 Census count
Housing units
23,872 2020 Census count
Land area
2,021 square miles
Water area
393 square miles
People per sq mi
15 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Cass County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

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Questions

Common questions about Cass County

When was Cass County founded?
Cass County was founded in 1851, formed from Dakota County, Mahkahto County, Pembina County, Kittson County, Wahnahta County and Benton County, and named after Lewis Cass.
What is the county seat of Cass County?
The county seat of Cass County is Walker.
Is there an online parcel map for Cass County?
Yes. Minnesota Geospatial Commons publishes a parcel map of 51,700 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Cass County's boundary or name changed?
Cass County was created in 1851 from Dakota County, Mahkahto County, Pembina County, Kittson County, Wahnahta County and Benton County. Since then the Atlas of Historical County Boundaries records 28 later changes, chiefly involving Crow Wing County, Morrison County and Stearns County.
Is my lot in a flood zone?
We do not have flood maps for Cass County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door