Bank BranchesEvery insured bank office · FDIC · 1994–2026

Bank Branches › Wisconsin › Sauk County › 1030 Main Street

Full-service office · FDIC office no. 233159

M&I Bank of Southern Wisconsin
1030 Main Street, Plain, WI 53577

Last reported 1999

$13.9M
peak deposits
1935
established
—
rank in county
3
names on the sign

This office filed its last FDIC deposit report in 1999. It is missing from every report since, which usually means it closed. The FDIC record doesn't give a reason. Sauk County has 25 offices open today, listed below.

This office's passbook1994–1999
DateBank on the signDepositsChange
Jun 30 2026NOT REPORTED missing from the 2026 report (and every year since 2000)
Jun 30 1999M&I Bank of Southern Wisconsin$11.1M−19%
Jun 30 1998M&I Bank of Southern Wisconsin$13.6M−2%
Jun 30 1997M&I Bank of Southern WisconsinNEW NAME$13.9M+5%
Jun 30 1996M&I Bank Southwest$13.3M0%
Jun 30 1995M&I Bank SouthwestNEW NAME$13.2M+1%
Jun 30 1994Valley Bank, Southwest$13.0M
1935-05-11Office established (FDIC record) — 59 years before this passbook begins

Nearest open offices in Sauk County

  1. <0.1 miThe Peoples Community Bank · 1065 Main St, Plain
  2. 7.1 miBMO Bank National Association · 209 E Jefferson St, Spring Green
  3. 7.2 miRoyal Bank · 152 S Worcester St, Spring Green
  4. 7.2 miThe Peoples Community Bank · 166 S Lexington St, Spring Green
  5. 15.3 miBank of Prairie du Sac · 865 Phillips Blvd, Sauk City
  6. 15.8 miFarmers and Merchants Union Bank · 608 Phillips Blvd, Sauk City
  7. 15.9 miLake Ridge Bank · 603 Phillips Blvd, Sauk City
  8. 16.2 miBank of Prairie du Sac · 555 Park Ave, Prairie Du Sac

All banks in Sauk County →
Every M&I Bank of Southern Wisconsin office →
What became of M&I Bank of Southern Wisconsin →

Names on the sign

1994–1994Valley Bank, Southwest1995–1996M&I Bank Southwest1997–1999M&I Bank of Southern Wisconsin

The FDIC office number stays with the building when banks merge or rename, so the same office appears under each owner. Follow an earlier name to see what became of that bank.

Deposits are the balances the bank assigned to this office on June 30 of each year, in nominal dollars. Source: FDIC Summary of Deposits, office (UNINUMBR) 233159.